1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.content.res; 18 19 import android.annotation.AttrRes; 20 import android.annotation.ColorInt; 21 import android.annotation.StyleRes; 22 import android.annotation.StyleableRes; 23 import com.android.internal.util.GrowingArrayUtils; 24 import com.android.internal.util.XmlUtils; 25 26 import org.xmlpull.v1.XmlPullParser; 27 import org.xmlpull.v1.XmlPullParserException; 28 29 import android.animation.Animator; 30 import android.animation.StateListAnimator; 31 import android.annotation.AnimRes; 32 import android.annotation.AnyRes; 33 import android.annotation.ArrayRes; 34 import android.annotation.BoolRes; 35 import android.annotation.ColorRes; 36 import android.annotation.DimenRes; 37 import android.annotation.DrawableRes; 38 import android.annotation.FractionRes; 39 import android.annotation.IntegerRes; 40 import android.annotation.LayoutRes; 41 import android.annotation.NonNull; 42 import android.annotation.Nullable; 43 import android.annotation.PluralsRes; 44 import android.annotation.RawRes; 45 import android.annotation.StringRes; 46 import android.annotation.XmlRes; 47 import android.content.pm.ActivityInfo; 48 import android.graphics.Movie; 49 import android.graphics.drawable.ColorDrawable; 50 import android.graphics.drawable.Drawable; 51 import android.graphics.drawable.Drawable.ConstantState; 52 import android.os.Build; 53 import android.os.Bundle; 54 import android.os.Trace; 55 import android.util.ArrayMap; 56 import android.util.AttributeSet; 57 import android.util.DisplayMetrics; 58 import android.util.Log; 59 import android.util.LongSparseArray; 60 import android.util.Pools.SynchronizedPool; 61 import android.util.Slog; 62 import android.util.TypedValue; 63 import android.view.ViewDebug; 64 import android.view.ViewHierarchyEncoder; 65 66 import java.io.IOException; 67 import java.io.InputStream; 68 import java.lang.ref.WeakReference; 69 import java.util.Locale; 70 71 import libcore.icu.NativePluralRules; 72 73 /** 74 * Class for accessing an application's resources. This sits on top of the 75 * asset manager of the application (accessible through {@link #getAssets}) and 76 * provides a high-level API for getting typed data from the assets. 77 * 78 * <p>The Android resource system keeps track of all non-code assets associated with an 79 * application. You can use this class to access your application's resources. You can generally 80 * acquire the {@link android.content.res.Resources} instance associated with your application 81 * with {@link android.content.Context#getResources getResources()}.</p> 82 * 83 * <p>The Android SDK tools compile your application's resources into the application binary 84 * at build time. To use a resource, you must install it correctly in the source tree (inside 85 * your project's {@code res/} directory) and build your application. As part of the build 86 * process, the SDK tools generate symbols for each resource, which you can use in your application 87 * code to access the resources.</p> 88 * 89 * <p>Using application resources makes it easy to update various characteristics of your 90 * application without modifying code, and—by providing sets of alternative 91 * resources—enables you to optimize your application for a variety of device configurations 92 * (such as for different languages and screen sizes). This is an important aspect of developing 93 * Android applications that are compatible on different types of devices.</p> 94 * 95 * <p>For more information about using resources, see the documentation about <a 96 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 97 */ 98 public class Resources { 99 static final String TAG = "Resources"; 100 101 private static final boolean DEBUG_LOAD = false; 102 private static final boolean DEBUG_CONFIG = false; 103 private static final boolean TRACE_FOR_PRELOAD = false; 104 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 105 106 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 107 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 108 109 private static final int ID_OTHER = 0x01000004; 110 111 private static final Object sSync = new Object(); 112 113 // Information about preloaded resources. Note that they are not 114 // protected by a lock, because while preloading in zygote we are all 115 // single-threaded, and after that these are immutable. 116 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 117 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 118 = new LongSparseArray<>(); 119 private static final LongSparseArray<android.content.res.ConstantState<ColorStateList>> 120 sPreloadedColorStateLists = new LongSparseArray<>(); 121 122 private static final String CACHE_NOT_THEMED = ""; 123 private static final String CACHE_NULL_THEME = "null_theme"; 124 125 // Pool of TypedArrays targeted to this Resources object. 126 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<>(5); 127 128 // Used by BridgeResources in layoutlib 129 static Resources mSystem = null; 130 131 private static boolean sPreloaded; 132 private static int sPreloadedDensity; 133 134 // These are protected by mAccessLock. 135 private final Object mAccessLock = new Object(); 136 private final Configuration mTmpConfig = new Configuration(); 137 private final DrawableCache mDrawableCache = new DrawableCache(this); 138 private final DrawableCache mColorDrawableCache = new DrawableCache(this); 139 private final ConfigurationBoundResourceCache<ColorStateList> mColorStateListCache = 140 new ConfigurationBoundResourceCache<>(this); 141 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 142 new ConfigurationBoundResourceCache<>(this); 143 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 144 new ConfigurationBoundResourceCache<>(this); 145 146 private TypedValue mTmpValue = new TypedValue(); 147 private boolean mPreloading; 148 149 private int mLastCachedXmlBlockIndex = -1; 150 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 151 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 152 153 final AssetManager mAssets; 154 final DisplayMetrics mMetrics = new DisplayMetrics(); 155 156 private final Configuration mConfiguration = new Configuration(); 157 private NativePluralRules mPluralRule; 158 159 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 160 161 static { 162 sPreloadedDrawables = new LongSparseArray[2]; 163 sPreloadedDrawables[0] = new LongSparseArray<>(); 164 sPreloadedDrawables[1] = new LongSparseArray<>(); 165 } 166 167 /** 168 * Returns the most appropriate default theme for the specified target SDK version. 169 * <ul> 170 * <li>Below API 11: Gingerbread 171 * <li>APIs 11 thru 14: Holo 172 * <li>APIs 14 thru XX: Device default dark 173 * <li>API XX and above: Device default light with dark action bar 174 * </ul> 175 * 176 * @param curTheme The current theme, or 0 if not specified. 177 * @param targetSdkVersion The target SDK version. 178 * @return A theme resource identifier 179 * @hide 180 */ 181 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 182 return selectSystemTheme(curTheme, targetSdkVersion, 183 com.android.internal.R.style.Theme, 184 com.android.internal.R.style.Theme_Holo, 185 com.android.internal.R.style.Theme_DeviceDefault, 186 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 187 } 188 189 /** @hide */ 190 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 191 int dark, int deviceDefault) { 192 if (curTheme != 0) { 193 return curTheme; 194 } 195 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 196 return orig; 197 } 198 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 199 return holo; 200 } 201 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 202 return dark; 203 } 204 return deviceDefault; 205 } 206 207 /** 208 * Used by AnimatorInflater. 209 * 210 * @hide 211 */ 212 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 213 return mAnimatorCache; 214 } 215 216 /** 217 * Used by AnimatorInflater. 218 * 219 * @hide 220 */ 221 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 222 return mStateListAnimatorCache; 223 } 224 225 /** 226 * This exception is thrown by the resource APIs when a requested resource 227 * can not be found. 228 */ 229 public static class NotFoundException extends RuntimeException { 230 public NotFoundException() { 231 } 232 233 public NotFoundException(String name) { 234 super(name); 235 } 236 } 237 238 /** 239 * Create a new Resources object on top of an existing set of assets in an 240 * AssetManager. 241 * 242 * @param assets Previously created AssetManager. 243 * @param metrics Current display metrics to consider when 244 * selecting/computing resource values. 245 * @param config Desired device configuration to consider when 246 * selecting/computing resource values (optional). 247 */ 248 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 249 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO); 250 } 251 252 /** 253 * Creates a new Resources object with CompatibilityInfo. 254 * 255 * @param assets Previously created AssetManager. 256 * @param metrics Current display metrics to consider when 257 * selecting/computing resource values. 258 * @param config Desired device configuration to consider when 259 * selecting/computing resource values (optional). 260 * @param compatInfo this resource's compatibility info. Must not be null. 261 * @hide 262 */ 263 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 264 CompatibilityInfo compatInfo) { 265 mAssets = assets; 266 mMetrics.setToDefaults(); 267 if (compatInfo != null) { 268 mCompatibilityInfo = compatInfo; 269 } 270 updateConfiguration(config, metrics); 271 assets.ensureStringBlocks(); 272 } 273 274 /** 275 * Return a global shared Resources object that provides access to only 276 * system resources (no application resources), and is not configured for 277 * the current screen (can not use dimension units, does not change based 278 * on orientation, etc). 279 */ 280 public static Resources getSystem() { 281 synchronized (sSync) { 282 Resources ret = mSystem; 283 if (ret == null) { 284 ret = new Resources(); 285 mSystem = ret; 286 } 287 288 return ret; 289 } 290 } 291 292 /** 293 * Return the string value associated with a particular resource ID. The 294 * returned object will be a String if this is a plain string; it will be 295 * some other type of CharSequence if it is styled. 296 * {@more} 297 * 298 * @param id The desired resource identifier, as generated by the aapt 299 * tool. This integer encodes the package, type, and resource 300 * entry. The value 0 is an invalid identifier. 301 * 302 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 303 * 304 * @return CharSequence The string data associated with the resource, plus 305 * possibly styled text information. 306 */ 307 public CharSequence getText(@StringRes int id) throws NotFoundException { 308 CharSequence res = mAssets.getResourceText(id); 309 if (res != null) { 310 return res; 311 } 312 throw new NotFoundException("String resource ID #0x" 313 + Integer.toHexString(id)); 314 } 315 316 /** 317 * Returns the character sequence necessary for grammatically correct pluralization 318 * of the given resource ID for the given quantity. 319 * Note that the character sequence is selected based solely on grammatical necessity, 320 * and that such rules differ between languages. Do not assume you know which string 321 * will be returned for a given quantity. See 322 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 323 * for more detail. 324 * 325 * @param id The desired resource identifier, as generated by the aapt 326 * tool. This integer encodes the package, type, and resource 327 * entry. The value 0 is an invalid identifier. 328 * @param quantity The number used to get the correct string for the current language's 329 * plural rules. 330 * 331 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 332 * 333 * @return CharSequence The string data associated with the resource, plus 334 * possibly styled text information. 335 */ 336 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 337 throws NotFoundException { 338 NativePluralRules rule = getPluralRule(); 339 CharSequence res = mAssets.getResourceBagText(id, 340 attrForQuantityCode(rule.quantityForInt(quantity))); 341 if (res != null) { 342 return res; 343 } 344 res = mAssets.getResourceBagText(id, ID_OTHER); 345 if (res != null) { 346 return res; 347 } 348 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 349 + " quantity=" + quantity 350 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 351 } 352 353 private NativePluralRules getPluralRule() { 354 synchronized (sSync) { 355 if (mPluralRule == null) { 356 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 357 } 358 return mPluralRule; 359 } 360 } 361 362 private static int attrForQuantityCode(int quantityCode) { 363 switch (quantityCode) { 364 case NativePluralRules.ZERO: return 0x01000005; 365 case NativePluralRules.ONE: return 0x01000006; 366 case NativePluralRules.TWO: return 0x01000007; 367 case NativePluralRules.FEW: return 0x01000008; 368 case NativePluralRules.MANY: return 0x01000009; 369 default: return ID_OTHER; 370 } 371 } 372 373 private static String stringForQuantityCode(int quantityCode) { 374 switch (quantityCode) { 375 case NativePluralRules.ZERO: return "zero"; 376 case NativePluralRules.ONE: return "one"; 377 case NativePluralRules.TWO: return "two"; 378 case NativePluralRules.FEW: return "few"; 379 case NativePluralRules.MANY: return "many"; 380 default: return "other"; 381 } 382 } 383 384 /** 385 * Return the string value associated with a particular resource ID. It 386 * will be stripped of any styled text information. 387 * {@more} 388 * 389 * @param id The desired resource identifier, as generated by the aapt 390 * tool. This integer encodes the package, type, and resource 391 * entry. The value 0 is an invalid identifier. 392 * 393 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 394 * 395 * @return String The string data associated with the resource, 396 * stripped of styled text information. 397 */ 398 @NonNull 399 public String getString(@StringRes int id) throws NotFoundException { 400 final CharSequence res = getText(id); 401 if (res != null) { 402 return res.toString(); 403 } 404 throw new NotFoundException("String resource ID #0x" 405 + Integer.toHexString(id)); 406 } 407 408 409 /** 410 * Return the string value associated with a particular resource ID, 411 * substituting the format arguments as defined in {@link java.util.Formatter} 412 * and {@link java.lang.String#format}. It will be stripped of any styled text 413 * information. 414 * {@more} 415 * 416 * @param id The desired resource identifier, as generated by the aapt 417 * tool. This integer encodes the package, type, and resource 418 * entry. The value 0 is an invalid identifier. 419 * 420 * @param formatArgs The format arguments that will be used for substitution. 421 * 422 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 423 * 424 * @return String The string data associated with the resource, 425 * stripped of styled text information. 426 */ 427 @NonNull 428 public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException { 429 final String raw = getString(id); 430 return String.format(mConfiguration.locale, raw, formatArgs); 431 } 432 433 /** 434 * Formats the string necessary for grammatically correct pluralization 435 * of the given resource ID for the given quantity, using the given arguments. 436 * Note that the string is selected based solely on grammatical necessity, 437 * and that such rules differ between languages. Do not assume you know which string 438 * will be returned for a given quantity. See 439 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 440 * for more detail. 441 * 442 * <p>Substitution of format arguments works as if using 443 * {@link java.util.Formatter} and {@link java.lang.String#format}. 444 * The resulting string will be stripped of any styled text information. 445 * 446 * @param id The desired resource identifier, as generated by the aapt 447 * tool. This integer encodes the package, type, and resource 448 * entry. The value 0 is an invalid identifier. 449 * @param quantity The number used to get the correct string for the current language's 450 * plural rules. 451 * @param formatArgs The format arguments that will be used for substitution. 452 * 453 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 454 * 455 * @return String The string data associated with the resource, 456 * stripped of styled text information. 457 */ 458 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 459 throws NotFoundException { 460 String raw = getQuantityText(id, quantity).toString(); 461 return String.format(mConfiguration.locale, raw, formatArgs); 462 } 463 464 /** 465 * Returns the string necessary for grammatically correct pluralization 466 * of the given resource ID for the given quantity. 467 * Note that the string is selected based solely on grammatical necessity, 468 * and that such rules differ between languages. Do not assume you know which string 469 * will be returned for a given quantity. See 470 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 471 * for more detail. 472 * 473 * @param id The desired resource identifier, as generated by the aapt 474 * tool. This integer encodes the package, type, and resource 475 * entry. The value 0 is an invalid identifier. 476 * @param quantity The number used to get the correct string for the current language's 477 * plural rules. 478 * 479 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 480 * 481 * @return String The string data associated with the resource, 482 * stripped of styled text information. 483 */ 484 public String getQuantityString(@PluralsRes int id, int quantity) 485 throws NotFoundException { 486 return getQuantityText(id, quantity).toString(); 487 } 488 489 /** 490 * Return the string value associated with a particular resource ID. The 491 * returned object will be a String if this is a plain string; it will be 492 * some other type of CharSequence if it is styled. 493 * 494 * @param id The desired resource identifier, as generated by the aapt 495 * tool. This integer encodes the package, type, and resource 496 * entry. The value 0 is an invalid identifier. 497 * 498 * @param def The default CharSequence to return. 499 * 500 * @return CharSequence The string data associated with the resource, plus 501 * possibly styled text information, or def if id is 0 or not found. 502 */ 503 public CharSequence getText(@StringRes int id, CharSequence def) { 504 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 505 return res != null ? res : def; 506 } 507 508 /** 509 * Return the styled text array associated with a particular resource ID. 510 * 511 * @param id The desired resource identifier, as generated by the aapt 512 * tool. This integer encodes the package, type, and resource 513 * entry. The value 0 is an invalid identifier. 514 * 515 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 516 * 517 * @return The styled text array associated with the resource. 518 */ 519 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 520 CharSequence[] res = mAssets.getResourceTextArray(id); 521 if (res != null) { 522 return res; 523 } 524 throw new NotFoundException("Text array resource ID #0x" 525 + Integer.toHexString(id)); 526 } 527 528 /** 529 * Return the string array associated with a particular resource ID. 530 * 531 * @param id The desired resource identifier, as generated by the aapt 532 * tool. This integer encodes the package, type, and resource 533 * entry. The value 0 is an invalid identifier. 534 * 535 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 536 * 537 * @return The string array associated with the resource. 538 */ 539 public String[] getStringArray(@ArrayRes int id) 540 throws NotFoundException { 541 String[] res = mAssets.getResourceStringArray(id); 542 if (res != null) { 543 return res; 544 } 545 throw new NotFoundException("String array resource ID #0x" 546 + Integer.toHexString(id)); 547 } 548 549 /** 550 * Return the int array associated with a particular resource ID. 551 * 552 * @param id The desired resource identifier, as generated by the aapt 553 * tool. This integer encodes the package, type, and resource 554 * entry. The value 0 is an invalid identifier. 555 * 556 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 557 * 558 * @return The int array associated with the resource. 559 */ 560 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 561 int[] res = mAssets.getArrayIntResource(id); 562 if (res != null) { 563 return res; 564 } 565 throw new NotFoundException("Int array resource ID #0x" 566 + Integer.toHexString(id)); 567 } 568 569 /** 570 * Return an array of heterogeneous values. 571 * 572 * @param id The desired resource identifier, as generated by the aapt 573 * tool. This integer encodes the package, type, and resource 574 * entry. The value 0 is an invalid identifier. 575 * 576 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 577 * 578 * @return Returns a TypedArray holding an array of the array values. 579 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 580 * when done with it. 581 */ 582 public TypedArray obtainTypedArray(@ArrayRes int id) 583 throws NotFoundException { 584 int len = mAssets.getArraySize(id); 585 if (len < 0) { 586 throw new NotFoundException("Array resource ID #0x" 587 + Integer.toHexString(id)); 588 } 589 590 TypedArray array = TypedArray.obtain(this, len); 591 array.mLength = mAssets.retrieveArray(id, array.mData); 592 array.mIndices[0] = 0; 593 594 return array; 595 } 596 597 /** 598 * Retrieve a dimensional for a particular resource ID. Unit 599 * conversions are based on the current {@link DisplayMetrics} associated 600 * with the resources. 601 * 602 * @param id The desired resource identifier, as generated by the aapt 603 * tool. This integer encodes the package, type, and resource 604 * entry. The value 0 is an invalid identifier. 605 * 606 * @return Resource dimension value multiplied by the appropriate 607 * metric. 608 * 609 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 610 * 611 * @see #getDimensionPixelOffset 612 * @see #getDimensionPixelSize 613 */ 614 public float getDimension(@DimenRes int id) throws NotFoundException { 615 synchronized (mAccessLock) { 616 TypedValue value = mTmpValue; 617 if (value == null) { 618 mTmpValue = value = new TypedValue(); 619 } 620 getValue(id, value, true); 621 if (value.type == TypedValue.TYPE_DIMENSION) { 622 return TypedValue.complexToDimension(value.data, mMetrics); 623 } 624 throw new NotFoundException( 625 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 626 + Integer.toHexString(value.type) + " is not valid"); 627 } 628 } 629 630 /** 631 * Retrieve a dimensional for a particular resource ID for use 632 * as an offset in raw pixels. This is the same as 633 * {@link #getDimension}, except the returned value is converted to 634 * integer pixels for you. An offset conversion involves simply 635 * truncating the base value to an integer. 636 * 637 * @param id The desired resource identifier, as generated by the aapt 638 * tool. This integer encodes the package, type, and resource 639 * entry. The value 0 is an invalid identifier. 640 * 641 * @return Resource dimension value multiplied by the appropriate 642 * metric and truncated to integer pixels. 643 * 644 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 645 * 646 * @see #getDimension 647 * @see #getDimensionPixelSize 648 */ 649 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 650 synchronized (mAccessLock) { 651 TypedValue value = mTmpValue; 652 if (value == null) { 653 mTmpValue = value = new TypedValue(); 654 } 655 getValue(id, value, true); 656 if (value.type == TypedValue.TYPE_DIMENSION) { 657 return TypedValue.complexToDimensionPixelOffset( 658 value.data, mMetrics); 659 } 660 throw new NotFoundException( 661 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 662 + Integer.toHexString(value.type) + " is not valid"); 663 } 664 } 665 666 /** 667 * Retrieve a dimensional for a particular resource ID for use 668 * as a size in raw pixels. This is the same as 669 * {@link #getDimension}, except the returned value is converted to 670 * integer pixels for use as a size. A size conversion involves 671 * rounding the base value, and ensuring that a non-zero base value 672 * is at least one pixel in size. 673 * 674 * @param id The desired resource identifier, as generated by the aapt 675 * tool. This integer encodes the package, type, and resource 676 * entry. The value 0 is an invalid identifier. 677 * 678 * @return Resource dimension value multiplied by the appropriate 679 * metric and truncated to integer pixels. 680 * 681 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 682 * 683 * @see #getDimension 684 * @see #getDimensionPixelOffset 685 */ 686 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 687 synchronized (mAccessLock) { 688 TypedValue value = mTmpValue; 689 if (value == null) { 690 mTmpValue = value = new TypedValue(); 691 } 692 getValue(id, value, true); 693 if (value.type == TypedValue.TYPE_DIMENSION) { 694 return TypedValue.complexToDimensionPixelSize( 695 value.data, mMetrics); 696 } 697 throw new NotFoundException( 698 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 699 + Integer.toHexString(value.type) + " is not valid"); 700 } 701 } 702 703 /** 704 * Retrieve a fractional unit for a particular resource ID. 705 * 706 * @param id The desired resource identifier, as generated by the aapt 707 * tool. This integer encodes the package, type, and resource 708 * entry. The value 0 is an invalid identifier. 709 * @param base The base value of this fraction. In other words, a 710 * standard fraction is multiplied by this value. 711 * @param pbase The parent base value of this fraction. In other 712 * words, a parent fraction (nn%p) is multiplied by this 713 * value. 714 * 715 * @return Attribute fractional value multiplied by the appropriate 716 * base value. 717 * 718 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 719 */ 720 public float getFraction(@FractionRes int id, int base, int pbase) { 721 synchronized (mAccessLock) { 722 TypedValue value = mTmpValue; 723 if (value == null) { 724 mTmpValue = value = new TypedValue(); 725 } 726 getValue(id, value, true); 727 if (value.type == TypedValue.TYPE_FRACTION) { 728 return TypedValue.complexToFraction(value.data, base, pbase); 729 } 730 throw new NotFoundException( 731 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 732 + Integer.toHexString(value.type) + " is not valid"); 733 } 734 } 735 736 /** 737 * Return a drawable object associated with a particular resource ID. 738 * Various types of objects will be returned depending on the underlying 739 * resource -- for example, a solid color, PNG image, scalable image, etc. 740 * The Drawable API hides these implementation details. 741 * 742 * <p class="note"><strong>Note:</strong> Prior to 743 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 744 * would not correctly retrieve the final configuration density when 745 * the resource ID passed here is an alias to another Drawable resource. 746 * This means that if the density configuration of the alias resource 747 * is different than the actual resource, the density of the returned 748 * Drawable would be incorrect, resulting in bad scaling. To work 749 * around this, you can instead retrieve the Drawable through 750 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 751 * {@link android.content.Context#obtainStyledAttributes(int[]) 752 * Context.obtainStyledAttributes} with 753 * an array containing the resource ID of interest to create the TypedArray.</p> 754 * 755 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 756 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 757 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 758 * 759 * @param id The desired resource identifier, as generated by the aapt 760 * tool. This integer encodes the package, type, and resource 761 * entry. The value 0 is an invalid identifier. 762 * @return Drawable An object that can be used to draw this resource. 763 * @throws NotFoundException Throws NotFoundException if the given ID does 764 * not exist. 765 * @see #getDrawable(int, Theme) 766 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 767 */ 768 @Deprecated 769 @Nullable 770 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 771 final Drawable d = getDrawable(id, null); 772 if (d != null && d.canApplyTheme()) { 773 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 774 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 775 + "Context.getDrawable(int).", new RuntimeException()); 776 } 777 return d; 778 } 779 780 /** 781 * Return a drawable object associated with a particular resource ID and 782 * styled for the specified theme. Various types of objects will be 783 * returned depending on the underlying resource -- for example, a solid 784 * color, PNG image, scalable image, etc. 785 * 786 * @param id The desired resource identifier, as generated by the aapt 787 * tool. This integer encodes the package, type, and resource 788 * entry. The value 0 is an invalid identifier. 789 * @param theme The theme used to style the drawable attributes, may be {@code null}. 790 * @return Drawable An object that can be used to draw this resource. 791 * @throws NotFoundException Throws NotFoundException if the given ID does 792 * not exist. 793 */ 794 @Nullable 795 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) throws NotFoundException { 796 TypedValue value; 797 synchronized (mAccessLock) { 798 value = mTmpValue; 799 if (value == null) { 800 value = new TypedValue(); 801 } else { 802 mTmpValue = null; 803 } 804 getValue(id, value, true); 805 } 806 final Drawable res = loadDrawable(value, id, theme); 807 synchronized (mAccessLock) { 808 if (mTmpValue == null) { 809 mTmpValue = value; 810 } 811 } 812 return res; 813 } 814 815 /** 816 * Return a drawable object associated with a particular resource ID for the 817 * given screen density in DPI. This will set the drawable's density to be 818 * the device's density multiplied by the ratio of actual drawable density 819 * to requested density. This allows the drawable to be scaled up to the 820 * correct size if needed. Various types of objects will be returned 821 * depending on the underlying resource -- for example, a solid color, PNG 822 * image, scalable image, etc. The Drawable API hides these implementation 823 * details. 824 * 825 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 826 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 827 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 828 * theme.</p> 829 * 830 * @param id The desired resource identifier, as generated by the aapt tool. 831 * This integer encodes the package, type, and resource entry. 832 * The value 0 is an invalid identifier. 833 * @param density the desired screen density indicated by the resource as 834 * found in {@link DisplayMetrics}. 835 * @return Drawable An object that can be used to draw this resource. 836 * @throws NotFoundException Throws NotFoundException if the given ID does 837 * not exist. 838 * @see #getDrawableForDensity(int, int, Theme) 839 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 840 */ 841 @Deprecated 842 @Nullable 843 public Drawable getDrawableForDensity(@DrawableRes int id, int density) throws NotFoundException { 844 return getDrawableForDensity(id, density, null); 845 } 846 847 /** 848 * Return a drawable object associated with a particular resource ID for the 849 * given screen density in DPI and styled for the specified theme. 850 * 851 * @param id The desired resource identifier, as generated by the aapt tool. 852 * This integer encodes the package, type, and resource entry. 853 * The value 0 is an invalid identifier. 854 * @param density The desired screen density indicated by the resource as 855 * found in {@link DisplayMetrics}. 856 * @param theme The theme used to style the drawable attributes, may be {@code null}. 857 * @return Drawable An object that can be used to draw this resource. 858 * @throws NotFoundException Throws NotFoundException if the given ID does 859 * not exist. 860 */ 861 @Nullable 862 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 863 TypedValue value; 864 synchronized (mAccessLock) { 865 value = mTmpValue; 866 if (value == null) { 867 value = new TypedValue(); 868 } else { 869 mTmpValue = null; 870 } 871 getValueForDensity(id, density, value, true); 872 873 /* 874 * Pretend the requested density is actually the display density. If 875 * the drawable returned is not the requested density, then force it 876 * to be scaled later by dividing its density by the ratio of 877 * requested density to actual device density. Drawables that have 878 * undefined density or no density don't need to be handled here. 879 */ 880 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 881 if (value.density == density) { 882 value.density = mMetrics.densityDpi; 883 } else { 884 value.density = (value.density * mMetrics.densityDpi) / density; 885 } 886 } 887 } 888 889 final Drawable res = loadDrawable(value, id, theme); 890 synchronized (mAccessLock) { 891 if (mTmpValue == null) { 892 mTmpValue = value; 893 } 894 } 895 return res; 896 } 897 898 /** 899 * Return a movie object associated with the particular resource ID. 900 * @param id The desired resource identifier, as generated by the aapt 901 * tool. This integer encodes the package, type, and resource 902 * entry. The value 0 is an invalid identifier. 903 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 904 * 905 */ 906 public Movie getMovie(@RawRes int id) throws NotFoundException { 907 InputStream is = openRawResource(id); 908 Movie movie = Movie.decodeStream(is); 909 try { 910 is.close(); 911 } 912 catch (java.io.IOException e) { 913 // don't care, since the return value is valid 914 } 915 return movie; 916 } 917 918 /** 919 * Returns a color integer associated with a particular resource ID. If the 920 * resource holds a complex {@link ColorStateList}, then the default color 921 * from the set is returned. 922 * 923 * @param id The desired resource identifier, as generated by the aapt 924 * tool. This integer encodes the package, type, and resource 925 * entry. The value 0 is an invalid identifier. 926 * 927 * @throws NotFoundException Throws NotFoundException if the given ID does 928 * not exist. 929 * 930 * @return A single color value in the form 0xAARRGGBB. 931 * @deprecated Use {@link #getColor(int, Theme)} instead. 932 */ 933 @ColorInt 934 @Deprecated 935 public int getColor(@ColorRes int id) throws NotFoundException { 936 return getColor(id, null); 937 } 938 939 /** 940 * Returns a themed color integer associated with a particular resource ID. 941 * If the resource holds a complex {@link ColorStateList}, then the default 942 * color from the set is returned. 943 * 944 * @param id The desired resource identifier, as generated by the aapt 945 * tool. This integer encodes the package, type, and resource 946 * entry. The value 0 is an invalid identifier. 947 * @param theme The theme used to style the color attributes, may be 948 * {@code null}. 949 * 950 * @throws NotFoundException Throws NotFoundException if the given ID does 951 * not exist. 952 * 953 * @return A single color value in the form 0xAARRGGBB. 954 */ 955 @ColorInt 956 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 957 TypedValue value; 958 synchronized (mAccessLock) { 959 value = mTmpValue; 960 if (value == null) { 961 value = new TypedValue(); 962 } 963 getValue(id, value, true); 964 if (value.type >= TypedValue.TYPE_FIRST_INT 965 && value.type <= TypedValue.TYPE_LAST_INT) { 966 mTmpValue = value; 967 return value.data; 968 } else if (value.type != TypedValue.TYPE_STRING) { 969 throw new NotFoundException( 970 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 971 + Integer.toHexString(value.type) + " is not valid"); 972 } 973 mTmpValue = null; 974 } 975 976 final ColorStateList csl = loadColorStateList(value, id, theme); 977 synchronized (mAccessLock) { 978 if (mTmpValue == null) { 979 mTmpValue = value; 980 } 981 } 982 983 return csl.getDefaultColor(); 984 } 985 986 /** 987 * Returns a color state list associated with a particular resource ID. The 988 * resource may contain either a single raw color value or a complex 989 * {@link ColorStateList} holding multiple possible colors. 990 * 991 * @param id The desired resource identifier of a {@link ColorStateList}, 992 * as generated by the aapt tool. This integer encodes the 993 * package, type, and resource entry. The value 0 is an invalid 994 * identifier. 995 * 996 * @throws NotFoundException Throws NotFoundException if the given ID does 997 * not exist. 998 * 999 * @return A ColorStateList object containing either a single solid color 1000 * or multiple colors that can be selected based on a state. 1001 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 1002 */ 1003 @Nullable 1004 @Deprecated 1005 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 1006 final ColorStateList csl = getColorStateList(id, null); 1007 if (csl != null && csl.canApplyTheme()) { 1008 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 1009 + "unresolved theme attributes! Consider using " 1010 + "Resources.getColorStateList(int, Theme) or " 1011 + "Context.getColorStateList(int).", new RuntimeException()); 1012 } 1013 return csl; 1014 } 1015 1016 /** 1017 * Returns a themed color state list associated with a particular resource 1018 * ID. The resource may contain either a single raw color value or a 1019 * complex {@link ColorStateList} holding multiple possible colors. 1020 * 1021 * @param id The desired resource identifier of a {@link ColorStateList}, 1022 * as generated by the aapt tool. This integer encodes the 1023 * package, type, and resource entry. The value 0 is an invalid 1024 * identifier. 1025 * @param theme The theme used to style the color attributes, may be 1026 * {@code null}. 1027 * 1028 * @throws NotFoundException Throws NotFoundException if the given ID does 1029 * not exist. 1030 * 1031 * @return A themed ColorStateList object containing either a single solid 1032 * color or multiple colors that can be selected based on a state. 1033 */ 1034 @Nullable 1035 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1036 throws NotFoundException { 1037 TypedValue value; 1038 synchronized (mAccessLock) { 1039 value = mTmpValue; 1040 if (value == null) { 1041 value = new TypedValue(); 1042 } else { 1043 mTmpValue = null; 1044 } 1045 getValue(id, value, true); 1046 } 1047 1048 final ColorStateList res = loadColorStateList(value, id, theme); 1049 synchronized (mAccessLock) { 1050 if (mTmpValue == null) { 1051 mTmpValue = value; 1052 } 1053 } 1054 1055 return res; 1056 } 1057 1058 /** 1059 * Return a boolean associated with a particular resource ID. This can be 1060 * used with any integral resource value, and will return true if it is 1061 * non-zero. 1062 * 1063 * @param id The desired resource identifier, as generated by the aapt 1064 * tool. This integer encodes the package, type, and resource 1065 * entry. The value 0 is an invalid identifier. 1066 * 1067 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1068 * 1069 * @return Returns the boolean value contained in the resource. 1070 */ 1071 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1072 synchronized (mAccessLock) { 1073 TypedValue value = mTmpValue; 1074 if (value == null) { 1075 mTmpValue = value = new TypedValue(); 1076 } 1077 getValue(id, value, true); 1078 if (value.type >= TypedValue.TYPE_FIRST_INT 1079 && value.type <= TypedValue.TYPE_LAST_INT) { 1080 return value.data != 0; 1081 } 1082 throw new NotFoundException( 1083 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1084 + Integer.toHexString(value.type) + " is not valid"); 1085 } 1086 } 1087 1088 /** 1089 * Return an integer associated with a particular resource ID. 1090 * 1091 * @param id The desired resource identifier, as generated by the aapt 1092 * tool. This integer encodes the package, type, and resource 1093 * entry. The value 0 is an invalid identifier. 1094 * 1095 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1096 * 1097 * @return Returns the integer value contained in the resource. 1098 */ 1099 public int getInteger(@IntegerRes int id) throws NotFoundException { 1100 synchronized (mAccessLock) { 1101 TypedValue value = mTmpValue; 1102 if (value == null) { 1103 mTmpValue = value = new TypedValue(); 1104 } 1105 getValue(id, value, true); 1106 if (value.type >= TypedValue.TYPE_FIRST_INT 1107 && value.type <= TypedValue.TYPE_LAST_INT) { 1108 return value.data; 1109 } 1110 throw new NotFoundException( 1111 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1112 + Integer.toHexString(value.type) + " is not valid"); 1113 } 1114 } 1115 1116 /** 1117 * Retrieve a floating-point value for a particular resource ID. 1118 * 1119 * @param id The desired resource identifier, as generated by the aapt 1120 * tool. This integer encodes the package, type, and resource 1121 * entry. The value 0 is an invalid identifier. 1122 * 1123 * @return Returns the floating-point value contained in the resource. 1124 * 1125 * @throws NotFoundException Throws NotFoundException if the given ID does 1126 * not exist or is not a floating-point value. 1127 * @hide Pending API council approval. 1128 */ 1129 public float getFloat(int id) { 1130 synchronized (mAccessLock) { 1131 TypedValue value = mTmpValue; 1132 if (value == null) { 1133 mTmpValue = value = new TypedValue(); 1134 } 1135 getValue(id, value, true); 1136 if (value.type == TypedValue.TYPE_FLOAT) { 1137 return value.getFloat(); 1138 } 1139 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1140 + Integer.toHexString(value.type) + " is not valid"); 1141 } 1142 } 1143 1144 /** 1145 * Return an XmlResourceParser through which you can read a view layout 1146 * description for the given resource ID. This parser has limited 1147 * functionality -- in particular, you can't change its input, and only 1148 * the high-level events are available. 1149 * 1150 * <p>This function is really a simple wrapper for calling 1151 * {@link #getXml} with a layout resource. 1152 * 1153 * @param id The desired resource identifier, as generated by the aapt 1154 * tool. This integer encodes the package, type, and resource 1155 * entry. The value 0 is an invalid identifier. 1156 * 1157 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1158 * 1159 * @return A new parser object through which you can read 1160 * the XML data. 1161 * 1162 * @see #getXml 1163 */ 1164 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1165 return loadXmlResourceParser(id, "layout"); 1166 } 1167 1168 /** 1169 * Return an XmlResourceParser through which you can read an animation 1170 * description for the given resource ID. This parser has limited 1171 * functionality -- in particular, you can't change its input, and only 1172 * the high-level events are available. 1173 * 1174 * <p>This function is really a simple wrapper for calling 1175 * {@link #getXml} with an animation resource. 1176 * 1177 * @param id The desired resource identifier, as generated by the aapt 1178 * tool. This integer encodes the package, type, and resource 1179 * entry. The value 0 is an invalid identifier. 1180 * 1181 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1182 * 1183 * @return A new parser object through which you can read 1184 * the XML data. 1185 * 1186 * @see #getXml 1187 */ 1188 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1189 return loadXmlResourceParser(id, "anim"); 1190 } 1191 1192 /** 1193 * Return an XmlResourceParser through which you can read a generic XML 1194 * resource for the given resource ID. 1195 * 1196 * <p>The XmlPullParser implementation returned here has some limited 1197 * functionality. In particular, you can't change its input, and only 1198 * high-level parsing events are available (since the document was 1199 * pre-parsed for you at build time, which involved merging text and 1200 * stripping comments). 1201 * 1202 * @param id The desired resource identifier, as generated by the aapt 1203 * tool. This integer encodes the package, type, and resource 1204 * entry. The value 0 is an invalid identifier. 1205 * 1206 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1207 * 1208 * @return A new parser object through which you can read 1209 * the XML data. 1210 * 1211 * @see android.util.AttributeSet 1212 */ 1213 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1214 return loadXmlResourceParser(id, "xml"); 1215 } 1216 1217 /** 1218 * Open a data stream for reading a raw resource. This can only be used 1219 * with resources whose value is the name of an asset files -- that is, it can be 1220 * used to open drawable, sound, and raw resources; it will fail on string 1221 * and color resources. 1222 * 1223 * @param id The resource identifier to open, as generated by the appt 1224 * tool. 1225 * 1226 * @return InputStream Access to the resource data. 1227 * 1228 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1229 * 1230 */ 1231 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1232 TypedValue value; 1233 synchronized (mAccessLock) { 1234 value = mTmpValue; 1235 if (value == null) { 1236 value = new TypedValue(); 1237 } else { 1238 mTmpValue = null; 1239 } 1240 } 1241 InputStream res = openRawResource(id, value); 1242 synchronized (mAccessLock) { 1243 if (mTmpValue == null) { 1244 mTmpValue = value; 1245 } 1246 } 1247 return res; 1248 } 1249 1250 /** 1251 * Open a data stream for reading a raw resource. This can only be used 1252 * with resources whose value is the name of an asset file -- that is, it can be 1253 * used to open drawable, sound, and raw resources; it will fail on string 1254 * and color resources. 1255 * 1256 * @param id The resource identifier to open, as generated by the appt tool. 1257 * @param value The TypedValue object to hold the resource information. 1258 * 1259 * @return InputStream Access to the resource data. 1260 * 1261 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1262 */ 1263 public InputStream openRawResource(@RawRes int id, TypedValue value) 1264 throws NotFoundException { 1265 getValue(id, value, true); 1266 1267 try { 1268 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1269 AssetManager.ACCESS_STREAMING); 1270 } catch (Exception e) { 1271 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1272 " from drawable resource ID #0x" + Integer.toHexString(id)); 1273 rnf.initCause(e); 1274 throw rnf; 1275 } 1276 } 1277 1278 /** 1279 * Open a file descriptor for reading a raw resource. This can only be used 1280 * with resources whose value is the name of an asset files -- that is, it can be 1281 * used to open drawable, sound, and raw resources; it will fail on string 1282 * and color resources. 1283 * 1284 * <p>This function only works for resources that are stored in the package 1285 * as uncompressed data, which typically includes things like mp3 files 1286 * and png images. 1287 * 1288 * @param id The resource identifier to open, as generated by the appt 1289 * tool. 1290 * 1291 * @return AssetFileDescriptor A new file descriptor you can use to read 1292 * the resource. This includes the file descriptor itself, as well as the 1293 * offset and length of data where the resource appears in the file. A 1294 * null is returned if the file exists but is compressed. 1295 * 1296 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1297 * 1298 */ 1299 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1300 throws NotFoundException { 1301 TypedValue value; 1302 synchronized (mAccessLock) { 1303 value = mTmpValue; 1304 if (value == null) { 1305 value = new TypedValue(); 1306 } else { 1307 mTmpValue = null; 1308 } 1309 getValue(id, value, true); 1310 } 1311 try { 1312 return mAssets.openNonAssetFd( 1313 value.assetCookie, value.string.toString()); 1314 } catch (Exception e) { 1315 NotFoundException rnf = new NotFoundException( 1316 "File " + value.string.toString() 1317 + " from drawable resource ID #0x" 1318 + Integer.toHexString(id)); 1319 rnf.initCause(e); 1320 throw rnf; 1321 } finally { 1322 synchronized (mAccessLock) { 1323 if (mTmpValue == null) { 1324 mTmpValue = value; 1325 } 1326 } 1327 } 1328 } 1329 1330 /** 1331 * Return the raw data associated with a particular resource ID. 1332 * 1333 * @param id The desired resource identifier, as generated by the aapt 1334 * tool. This integer encodes the package, type, and resource 1335 * entry. The value 0 is an invalid identifier. 1336 * @param outValue Object in which to place the resource data. 1337 * @param resolveRefs If true, a resource that is a reference to another 1338 * resource will be followed so that you receive the 1339 * actual final resource data. If false, the TypedValue 1340 * will be filled in with the reference itself. 1341 * 1342 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1343 * 1344 */ 1345 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1346 throws NotFoundException { 1347 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1348 if (found) { 1349 return; 1350 } 1351 throw new NotFoundException("Resource ID #0x" 1352 + Integer.toHexString(id)); 1353 } 1354 1355 /** 1356 * Get the raw value associated with a resource with associated density. 1357 * 1358 * @param id resource identifier 1359 * @param density density in DPI 1360 * @param resolveRefs If true, a resource that is a reference to another 1361 * resource will be followed so that you receive the actual final 1362 * resource data. If false, the TypedValue will be filled in with 1363 * the reference itself. 1364 * @throws NotFoundException Throws NotFoundException if the given ID does 1365 * not exist. 1366 * @see #getValue(String, TypedValue, boolean) 1367 */ 1368 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1369 boolean resolveRefs) throws NotFoundException { 1370 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1371 if (found) { 1372 return; 1373 } 1374 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1375 } 1376 1377 /** 1378 * Return the raw data associated with a particular resource ID. 1379 * See getIdentifier() for information on how names are mapped to resource 1380 * IDs, and getString(int) for information on how string resources are 1381 * retrieved. 1382 * 1383 * <p>Note: use of this function is discouraged. It is much more 1384 * efficient to retrieve resources by identifier than by name. 1385 * 1386 * @param name The name of the desired resource. This is passed to 1387 * getIdentifier() with a default type of "string". 1388 * @param outValue Object in which to place the resource data. 1389 * @param resolveRefs If true, a resource that is a reference to another 1390 * resource will be followed so that you receive the 1391 * actual final resource data. If false, the TypedValue 1392 * will be filled in with the reference itself. 1393 * 1394 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1395 * 1396 */ 1397 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1398 throws NotFoundException { 1399 int id = getIdentifier(name, "string", null); 1400 if (id != 0) { 1401 getValue(id, outValue, resolveRefs); 1402 return; 1403 } 1404 throw new NotFoundException("String resource name " + name); 1405 } 1406 1407 /** 1408 * This class holds the current attribute values for a particular theme. 1409 * In other words, a Theme is a set of values for resource attributes; 1410 * these are used in conjunction with {@link TypedArray} 1411 * to resolve the final value for an attribute. 1412 * 1413 * <p>The Theme's attributes come into play in two ways: (1) a styled 1414 * attribute can explicit reference a value in the theme through the 1415 * "?themeAttribute" syntax; (2) if no value has been defined for a 1416 * particular styled attribute, as a last resort we will try to find that 1417 * attribute's value in the Theme. 1418 * 1419 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1420 * retrieve XML attributes with style and theme information applied. 1421 */ 1422 public final class Theme { 1423 /** 1424 * Place new attribute values into the theme. The style resource 1425 * specified by <var>resid</var> will be retrieved from this Theme's 1426 * resources, its values placed into the Theme object. 1427 * 1428 * <p>The semantics of this function depends on the <var>force</var> 1429 * argument: If false, only values that are not already defined in 1430 * the theme will be copied from the system resource; otherwise, if 1431 * any of the style's attributes are already defined in the theme, the 1432 * current values in the theme will be overwritten. 1433 * 1434 * @param resId The resource ID of a style resource from which to 1435 * obtain attribute values. 1436 * @param force If true, values in the style resource will always be 1437 * used in the theme; otherwise, they will only be used 1438 * if not already defined in the theme. 1439 */ 1440 public void applyStyle(int resId, boolean force) { 1441 AssetManager.applyThemeStyle(mTheme, resId, force); 1442 1443 mThemeResId = resId; 1444 mKey.append(resId, force); 1445 } 1446 1447 /** 1448 * Set this theme to hold the same contents as the theme 1449 * <var>other</var>. If both of these themes are from the same 1450 * Resources object, they will be identical after this function 1451 * returns. If they are from different Resources, only the resources 1452 * they have in common will be set in this theme. 1453 * 1454 * @param other The existing Theme to copy from. 1455 */ 1456 public void setTo(Theme other) { 1457 AssetManager.copyTheme(mTheme, other.mTheme); 1458 1459 mThemeResId = other.mThemeResId; 1460 mKey.setTo(other.getKey()); 1461 } 1462 1463 /** 1464 * Return a TypedArray holding the values defined by 1465 * <var>Theme</var> which are listed in <var>attrs</var>. 1466 * 1467 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1468 * with the array. 1469 * 1470 * @param attrs The desired attributes. 1471 * 1472 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1473 * 1474 * @return Returns a TypedArray holding an array of the attribute values. 1475 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1476 * when done with it. 1477 * 1478 * @see Resources#obtainAttributes 1479 * @see #obtainStyledAttributes(int, int[]) 1480 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1481 */ 1482 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1483 final int len = attrs.length; 1484 final TypedArray array = TypedArray.obtain(Resources.this, len); 1485 array.mTheme = this; 1486 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1487 return array; 1488 } 1489 1490 /** 1491 * Return a TypedArray holding the values defined by the style 1492 * resource <var>resid</var> which are listed in <var>attrs</var>. 1493 * 1494 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1495 * with the array. 1496 * 1497 * @param resid The desired style resource. 1498 * @param attrs The desired attributes in the style. 1499 * 1500 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1501 * 1502 * @return Returns a TypedArray holding an array of the attribute values. 1503 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1504 * when done with it. 1505 * 1506 * @see Resources#obtainAttributes 1507 * @see #obtainStyledAttributes(int[]) 1508 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1509 */ 1510 public TypedArray obtainStyledAttributes(@StyleRes int resid, @StyleableRes int[] attrs) 1511 throws NotFoundException { 1512 final int len = attrs.length; 1513 final TypedArray array = TypedArray.obtain(Resources.this, len); 1514 array.mTheme = this; 1515 if (false) { 1516 int[] data = array.mData; 1517 1518 System.out.println("**********************************************************"); 1519 System.out.println("**********************************************************"); 1520 System.out.println("**********************************************************"); 1521 System.out.println("Attributes:"); 1522 String s = " Attrs:"; 1523 int i; 1524 for (i=0; i<attrs.length; i++) { 1525 s = s + " 0x" + Integer.toHexString(attrs[i]); 1526 } 1527 System.out.println(s); 1528 s = " Found:"; 1529 TypedValue value = new TypedValue(); 1530 for (i=0; i<attrs.length; i++) { 1531 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1532 value.type = data[d+AssetManager.STYLE_TYPE]; 1533 value.data = data[d+AssetManager.STYLE_DATA]; 1534 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1535 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1536 s = s + " 0x" + Integer.toHexString(attrs[i]) 1537 + "=" + value; 1538 } 1539 System.out.println(s); 1540 } 1541 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1542 return array; 1543 } 1544 1545 /** 1546 * Return a TypedArray holding the attribute values in 1547 * <var>set</var> 1548 * that are listed in <var>attrs</var>. In addition, if the given 1549 * AttributeSet specifies a style class (through the "style" attribute), 1550 * that style will be applied on top of the base attributes it defines. 1551 * 1552 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1553 * with the array. 1554 * 1555 * <p>When determining the final value of a particular attribute, there 1556 * are four inputs that come into play:</p> 1557 * 1558 * <ol> 1559 * <li> Any attribute values in the given AttributeSet. 1560 * <li> The style resource specified in the AttributeSet (named 1561 * "style"). 1562 * <li> The default style specified by <var>defStyleAttr</var> and 1563 * <var>defStyleRes</var> 1564 * <li> The base values in this theme. 1565 * </ol> 1566 * 1567 * <p>Each of these inputs is considered in-order, with the first listed 1568 * taking precedence over the following ones. In other words, if in the 1569 * AttributeSet you have supplied <code><Button 1570 * textColor="#ff000000"></code>, then the button's text will 1571 * <em>always</em> be black, regardless of what is specified in any of 1572 * the styles. 1573 * 1574 * @param set The base set of attribute values. May be null. 1575 * @param attrs The desired attributes to be retrieved. 1576 * @param defStyleAttr An attribute in the current theme that contains a 1577 * reference to a style resource that supplies 1578 * defaults values for the TypedArray. Can be 1579 * 0 to not look for defaults. 1580 * @param defStyleRes A resource identifier of a style resource that 1581 * supplies default values for the TypedArray, 1582 * used only if defStyleAttr is 0 or can not be found 1583 * in the theme. Can be 0 to not look for defaults. 1584 * 1585 * @return Returns a TypedArray holding an array of the attribute values. 1586 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1587 * when done with it. 1588 * 1589 * @see Resources#obtainAttributes 1590 * @see #obtainStyledAttributes(int[]) 1591 * @see #obtainStyledAttributes(int, int[]) 1592 */ 1593 public TypedArray obtainStyledAttributes(AttributeSet set, 1594 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1595 final int len = attrs.length; 1596 final TypedArray array = TypedArray.obtain(Resources.this, len); 1597 1598 // XXX note that for now we only work with compiled XML files. 1599 // To support generic XML files we will need to manually parse 1600 // out the attributes from the XML file (applying type information 1601 // contained in the resources and such). 1602 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1603 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1604 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1605 1606 array.mTheme = this; 1607 array.mXml = parser; 1608 1609 if (false) { 1610 int[] data = array.mData; 1611 1612 System.out.println("Attributes:"); 1613 String s = " Attrs:"; 1614 int i; 1615 for (i=0; i<set.getAttributeCount(); i++) { 1616 s = s + " " + set.getAttributeName(i); 1617 int id = set.getAttributeNameResource(i); 1618 if (id != 0) { 1619 s = s + "(0x" + Integer.toHexString(id) + ")"; 1620 } 1621 s = s + "=" + set.getAttributeValue(i); 1622 } 1623 System.out.println(s); 1624 s = " Found:"; 1625 TypedValue value = new TypedValue(); 1626 for (i=0; i<attrs.length; i++) { 1627 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1628 value.type = data[d+AssetManager.STYLE_TYPE]; 1629 value.data = data[d+AssetManager.STYLE_DATA]; 1630 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1631 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1632 s = s + " 0x" + Integer.toHexString(attrs[i]) 1633 + "=" + value; 1634 } 1635 System.out.println(s); 1636 } 1637 1638 return array; 1639 } 1640 1641 /** 1642 * Retrieve the values for a set of attributes in the Theme. The 1643 * contents of the typed array are ultimately filled in by 1644 * {@link Resources#getValue}. 1645 * 1646 * @param values The base set of attribute values, must be equal in 1647 * length to {@code attrs}. All values must be of type 1648 * {@link TypedValue#TYPE_ATTRIBUTE}. 1649 * @param attrs The desired attributes to be retrieved. 1650 * @return Returns a TypedArray holding an array of the attribute 1651 * values. Be sure to call {@link TypedArray#recycle()} 1652 * when done with it. 1653 * @hide 1654 */ 1655 @NonNull 1656 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1657 final int len = attrs.length; 1658 if (values == null || len != values.length) { 1659 throw new IllegalArgumentException( 1660 "Base attribute values must the same length as attrs"); 1661 } 1662 1663 final TypedArray array = TypedArray.obtain(Resources.this, len); 1664 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1665 array.mTheme = this; 1666 array.mXml = null; 1667 1668 return array; 1669 } 1670 1671 /** 1672 * Retrieve the value of an attribute in the Theme. The contents of 1673 * <var>outValue</var> are ultimately filled in by 1674 * {@link Resources#getValue}. 1675 * 1676 * @param resid The resource identifier of the desired theme 1677 * attribute. 1678 * @param outValue Filled in with the ultimate resource value supplied 1679 * by the attribute. 1680 * @param resolveRefs If true, resource references will be walked; if 1681 * false, <var>outValue</var> may be a 1682 * TYPE_REFERENCE. In either case, it will never 1683 * be a TYPE_ATTRIBUTE. 1684 * 1685 * @return boolean Returns true if the attribute was found and 1686 * <var>outValue</var> is valid, else false. 1687 */ 1688 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1689 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1690 if (false) { 1691 System.out.println( 1692 "resolveAttribute #" + Integer.toHexString(resid) 1693 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1694 + ", data=0x" + Integer.toHexString(outValue.data)); 1695 } 1696 return got; 1697 } 1698 1699 /** 1700 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1701 * 1702 * @return The int array containing attribute ids associated with this {@link Theme}. 1703 * @hide 1704 */ 1705 public int[] getAllAttributes() { 1706 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1707 } 1708 1709 /** 1710 * Returns the resources to which this theme belongs. 1711 * 1712 * @return Resources to which this theme belongs. 1713 */ 1714 public Resources getResources() { 1715 return Resources.this; 1716 } 1717 1718 /** 1719 * Return a drawable object associated with a particular resource ID 1720 * and styled for the Theme. 1721 * 1722 * @param id The desired resource identifier, as generated by the aapt 1723 * tool. This integer encodes the package, type, and resource 1724 * entry. The value 0 is an invalid identifier. 1725 * @return Drawable An object that can be used to draw this resource. 1726 * @throws NotFoundException Throws NotFoundException if the given ID 1727 * does not exist. 1728 */ 1729 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1730 return Resources.this.getDrawable(id, this); 1731 } 1732 1733 /** 1734 * Returns a bit mask of configuration changes that will impact this 1735 * theme (and thus require completely reloading it). 1736 * 1737 * @return a bit mask of configuration changes, as defined by 1738 * {@link ActivityInfo} 1739 * @see ActivityInfo 1740 */ 1741 public int getChangingConfigurations() { 1742 final int nativeChangingConfig = AssetManager.getThemeChangingConfigurations(mTheme); 1743 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1744 } 1745 1746 /** 1747 * Print contents of this theme out to the log. For debugging only. 1748 * 1749 * @param priority The log priority to use. 1750 * @param tag The log tag to use. 1751 * @param prefix Text to prefix each line printed. 1752 */ 1753 public void dump(int priority, String tag, String prefix) { 1754 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1755 } 1756 1757 @Override 1758 protected void finalize() throws Throwable { 1759 super.finalize(); 1760 mAssets.releaseTheme(mTheme); 1761 } 1762 1763 /*package*/ Theme() { 1764 mAssets = Resources.this.mAssets; 1765 mTheme = mAssets.createTheme(); 1766 } 1767 1768 /** Unique key for the series of styles applied to this theme. */ 1769 private final ThemeKey mKey = new ThemeKey(); 1770 1771 @SuppressWarnings("hiding") 1772 private final AssetManager mAssets; 1773 private final long mTheme; 1774 1775 /** Resource identifier for the theme. */ 1776 private int mThemeResId = 0; 1777 1778 // Needed by layoutlib. 1779 /*package*/ long getNativeTheme() { 1780 return mTheme; 1781 } 1782 1783 /*package*/ int getAppliedStyleResId() { 1784 return mThemeResId; 1785 } 1786 1787 /*package*/ ThemeKey getKey() { 1788 return mKey; 1789 } 1790 1791 private String getResourceNameFromHexString(String hexString) { 1792 return getResourceName(Integer.parseInt(hexString, 16)); 1793 } 1794 1795 /** 1796 * Parses {@link #mKey} and returns a String array that holds pairs of 1797 * adjacent Theme data: resource name followed by whether or not it was 1798 * forced, as specified by {@link #applyStyle(int, boolean)}. 1799 * 1800 * @hide 1801 */ 1802 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1803 public String[] getTheme() { 1804 final int N = mKey.mCount; 1805 final String[] themes = new String[N * 2]; 1806 for (int i = 0, j = N - 1; i < themes.length; i += 2, --j) { 1807 final int resId = mKey.mResId[j]; 1808 final boolean forced = mKey.mForce[j]; 1809 try { 1810 themes[i] = getResourceName(resId); 1811 } catch (NotFoundException e) { 1812 themes[i] = Integer.toHexString(i); 1813 } 1814 themes[i + 1] = forced ? "forced" : "not forced"; 1815 } 1816 return themes; 1817 } 1818 1819 /** @hide */ 1820 public void encode(@NonNull ViewHierarchyEncoder encoder) { 1821 encoder.beginObject(this); 1822 final String[] properties = getTheme(); 1823 for (int i = 0; i < properties.length; i += 2) { 1824 encoder.addProperty(properties[i], properties[i+1]); 1825 } 1826 encoder.endObject(); 1827 } 1828 1829 /** 1830 * Rebases the theme against the parent Resource object's current 1831 * configuration by re-applying the styles passed to 1832 * {@link #applyStyle(int, boolean)}. 1833 * 1834 * @hide 1835 */ 1836 public void rebase() { 1837 AssetManager.clearTheme(mTheme); 1838 1839 // Reapply the same styles in the same order. 1840 for (int i = 0; i < mKey.mCount; i++) { 1841 final int resId = mKey.mResId[i]; 1842 final boolean force = mKey.mForce[i]; 1843 AssetManager.applyThemeStyle(mTheme, resId, force); 1844 } 1845 } 1846 } 1847 1848 static class ThemeKey implements Cloneable { 1849 int[] mResId; 1850 boolean[] mForce; 1851 int mCount; 1852 1853 private int mHashCode = 0; 1854 1855 public void append(int resId, boolean force) { 1856 if (mResId == null) { 1857 mResId = new int[4]; 1858 } 1859 1860 if (mForce == null) { 1861 mForce = new boolean[4]; 1862 } 1863 1864 mResId = GrowingArrayUtils.append(mResId, mCount, resId); 1865 mForce = GrowingArrayUtils.append(mForce, mCount, force); 1866 mCount++; 1867 1868 mHashCode = 31 * (31 * mHashCode + resId) + (force ? 1 : 0); 1869 } 1870 1871 /** 1872 * Sets up this key as a deep copy of another key. 1873 * 1874 * @param other the key to deep copy into this key 1875 */ 1876 public void setTo(ThemeKey other) { 1877 mResId = other.mResId == null ? null : other.mResId.clone(); 1878 mForce = other.mForce == null ? null : other.mForce.clone(); 1879 mCount = other.mCount; 1880 } 1881 1882 @Override 1883 public int hashCode() { 1884 return mHashCode; 1885 } 1886 1887 @Override 1888 public boolean equals(Object o) { 1889 if (this == o) { 1890 return true; 1891 } 1892 1893 if (o == null || getClass() != o.getClass() || hashCode() != o.hashCode()) { 1894 return false; 1895 } 1896 1897 final ThemeKey t = (ThemeKey) o; 1898 if (mCount != t.mCount) { 1899 return false; 1900 } 1901 1902 final int N = mCount; 1903 for (int i = 0; i < N; i++) { 1904 if (mResId[i] != t.mResId[i] || mForce[i] != t.mForce[i]) { 1905 return false; 1906 } 1907 } 1908 1909 return true; 1910 } 1911 1912 /** 1913 * @return a shallow copy of this key 1914 */ 1915 @Override 1916 public ThemeKey clone() { 1917 final ThemeKey other = new ThemeKey(); 1918 other.mResId = mResId; 1919 other.mForce = mForce; 1920 other.mCount = mCount; 1921 other.mHashCode = mHashCode; 1922 return other; 1923 } 1924 } 1925 1926 /** 1927 * Generate a new Theme object for this set of Resources. It initially 1928 * starts out empty. 1929 * 1930 * @return Theme The newly created Theme container. 1931 */ 1932 public final Theme newTheme() { 1933 return new Theme(); 1934 } 1935 1936 /** 1937 * Retrieve a set of basic attribute values from an AttributeSet, not 1938 * performing styling of them using a theme and/or style resources. 1939 * 1940 * @param set The current attribute values to retrieve. 1941 * @param attrs The specific attributes to be retrieved. 1942 * @return Returns a TypedArray holding an array of the attribute values. 1943 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1944 * when done with it. 1945 * 1946 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1947 */ 1948 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1949 int len = attrs.length; 1950 TypedArray array = TypedArray.obtain(this, len); 1951 1952 // XXX note that for now we only work with compiled XML files. 1953 // To support generic XML files we will need to manually parse 1954 // out the attributes from the XML file (applying type information 1955 // contained in the resources and such). 1956 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1957 mAssets.retrieveAttributes(parser.mParseState, attrs, 1958 array.mData, array.mIndices); 1959 1960 array.mXml = parser; 1961 1962 return array; 1963 } 1964 1965 /** 1966 * Store the newly updated configuration. 1967 */ 1968 public void updateConfiguration(Configuration config, 1969 DisplayMetrics metrics) { 1970 updateConfiguration(config, metrics, null); 1971 } 1972 1973 /** 1974 * @hide 1975 */ 1976 public void updateConfiguration(Configuration config, 1977 DisplayMetrics metrics, CompatibilityInfo compat) { 1978 synchronized (mAccessLock) { 1979 if (false) { 1980 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1981 + mConfiguration + " old compat is " + mCompatibilityInfo); 1982 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1983 + config + " new compat is " + compat); 1984 } 1985 if (compat != null) { 1986 mCompatibilityInfo = compat; 1987 } 1988 if (metrics != null) { 1989 mMetrics.setTo(metrics); 1990 } 1991 // NOTE: We should re-arrange this code to create a Display 1992 // with the CompatibilityInfo that is used everywhere we deal 1993 // with the display in relation to this app, rather than 1994 // doing the conversion here. This impl should be okay because 1995 // we make sure to return a compatible display in the places 1996 // where there are public APIs to retrieve the display... but 1997 // it would be cleaner and more maintainble to just be 1998 // consistently dealing with a compatible display everywhere in 1999 // the framework. 2000 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 2001 2002 final int configChanges = calcConfigChanges(config); 2003 if (mConfiguration.locale == null) { 2004 mConfiguration.locale = Locale.getDefault(); 2005 mConfiguration.setLayoutDirection(mConfiguration.locale); 2006 } 2007 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 2008 mMetrics.densityDpi = mConfiguration.densityDpi; 2009 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 2010 } 2011 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 2012 2013 String locale = null; 2014 if (mConfiguration.locale != null) { 2015 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 2016 } 2017 2018 final int width, height; 2019 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 2020 width = mMetrics.widthPixels; 2021 height = mMetrics.heightPixels; 2022 } else { 2023 //noinspection SuspiciousNameCombination 2024 width = mMetrics.heightPixels; 2025 //noinspection SuspiciousNameCombination 2026 height = mMetrics.widthPixels; 2027 } 2028 2029 final int keyboardHidden; 2030 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 2031 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 2032 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 2033 } else { 2034 keyboardHidden = mConfiguration.keyboardHidden; 2035 } 2036 2037 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 2038 locale, mConfiguration.orientation, 2039 mConfiguration.touchscreen, 2040 mConfiguration.densityDpi, mConfiguration.keyboard, 2041 keyboardHidden, mConfiguration.navigation, width, height, 2042 mConfiguration.smallestScreenWidthDp, 2043 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 2044 mConfiguration.screenLayout, mConfiguration.uiMode, 2045 Build.VERSION.RESOURCES_SDK_INT); 2046 2047 if (DEBUG_CONFIG) { 2048 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 2049 + " final compat is " + mCompatibilityInfo); 2050 } 2051 2052 mDrawableCache.onConfigurationChange(configChanges); 2053 mColorDrawableCache.onConfigurationChange(configChanges); 2054 mColorStateListCache.onConfigurationChange(configChanges); 2055 mAnimatorCache.onConfigurationChange(configChanges); 2056 mStateListAnimatorCache.onConfigurationChange(configChanges); 2057 2058 flushLayoutCache(); 2059 } 2060 synchronized (sSync) { 2061 if (mPluralRule != null) { 2062 mPluralRule = NativePluralRules.forLocale(config.locale); 2063 } 2064 } 2065 } 2066 2067 /** 2068 * Called by ConfigurationBoundResourceCacheTest via reflection. 2069 */ 2070 private int calcConfigChanges(Configuration config) { 2071 int configChanges = 0xfffffff; 2072 if (config != null) { 2073 mTmpConfig.setTo(config); 2074 int density = config.densityDpi; 2075 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 2076 density = mMetrics.noncompatDensityDpi; 2077 } 2078 2079 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 2080 2081 if (mTmpConfig.locale == null) { 2082 mTmpConfig.locale = Locale.getDefault(); 2083 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 2084 } 2085 configChanges = mConfiguration.updateFrom(mTmpConfig); 2086 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 2087 } 2088 return configChanges; 2089 } 2090 2091 /** 2092 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2093 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2094 * 2095 * All released versions of android prior to "L" used the deprecated language 2096 * tags, so we will need to support them for backwards compatibility. 2097 * 2098 * Note that this conversion needs to take place *after* the call to 2099 * {@code toLanguageTag} because that will convert all the deprecated codes to 2100 * the new ones, even if they're set manually. 2101 */ 2102 private static String adjustLanguageTag(String languageTag) { 2103 final int separator = languageTag.indexOf('-'); 2104 final String language; 2105 final String remainder; 2106 2107 if (separator == -1) { 2108 language = languageTag; 2109 remainder = ""; 2110 } else { 2111 language = languageTag.substring(0, separator); 2112 remainder = languageTag.substring(separator); 2113 } 2114 2115 return Locale.adjustLanguageCode(language) + remainder; 2116 } 2117 2118 /** 2119 * Update the system resources configuration if they have previously 2120 * been initialized. 2121 * 2122 * @hide 2123 */ 2124 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2125 CompatibilityInfo compat) { 2126 if (mSystem != null) { 2127 mSystem.updateConfiguration(config, metrics, compat); 2128 //Log.i(TAG, "Updated system resources " + mSystem 2129 // + ": " + mSystem.getConfiguration()); 2130 } 2131 } 2132 2133 /** 2134 * Return the current display metrics that are in effect for this resource 2135 * object. The returned object should be treated as read-only. 2136 * 2137 * @return The resource's current display metrics. 2138 */ 2139 public DisplayMetrics getDisplayMetrics() { 2140 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2141 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2142 return mMetrics; 2143 } 2144 2145 /** 2146 * Return the current configuration that is in effect for this resource 2147 * object. The returned object should be treated as read-only. 2148 * 2149 * @return The resource's current configuration. 2150 */ 2151 public Configuration getConfiguration() { 2152 return mConfiguration; 2153 } 2154 2155 /** 2156 * Return the compatibility mode information for the application. 2157 * The returned object should be treated as read-only. 2158 * 2159 * @return compatibility info. 2160 * @hide 2161 */ 2162 public CompatibilityInfo getCompatibilityInfo() { 2163 return mCompatibilityInfo; 2164 } 2165 2166 /** 2167 * This is just for testing. 2168 * @hide 2169 */ 2170 public void setCompatibilityInfo(CompatibilityInfo ci) { 2171 if (ci != null) { 2172 mCompatibilityInfo = ci; 2173 updateConfiguration(mConfiguration, mMetrics); 2174 } 2175 } 2176 2177 /** 2178 * Return a resource identifier for the given resource name. A fully 2179 * qualified resource name is of the form "package:type/entry". The first 2180 * two components (package and type) are optional if defType and 2181 * defPackage, respectively, are specified here. 2182 * 2183 * <p>Note: use of this function is discouraged. It is much more 2184 * efficient to retrieve resources by identifier than by name. 2185 * 2186 * @param name The name of the desired resource. 2187 * @param defType Optional default resource type to find, if "type/" is 2188 * not included in the name. Can be null to require an 2189 * explicit type. 2190 * @param defPackage Optional default package to find, if "package:" is 2191 * not included in the name. Can be null to require an 2192 * explicit package. 2193 * 2194 * @return int The associated resource identifier. Returns 0 if no such 2195 * resource was found. (0 is not a valid resource ID.) 2196 */ 2197 public int getIdentifier(String name, String defType, String defPackage) { 2198 if (name == null) { 2199 throw new NullPointerException("name is null"); 2200 } 2201 try { 2202 return Integer.parseInt(name); 2203 } catch (Exception e) { 2204 // Ignore 2205 } 2206 return mAssets.getResourceIdentifier(name, defType, defPackage); 2207 } 2208 2209 /** 2210 * Return true if given resource identifier includes a package. 2211 * 2212 * @hide 2213 */ 2214 public static boolean resourceHasPackage(@AnyRes int resid) { 2215 return (resid >>> 24) != 0; 2216 } 2217 2218 /** 2219 * Return the full name for a given resource identifier. This name is 2220 * a single string of the form "package:type/entry". 2221 * 2222 * @param resid The resource identifier whose name is to be retrieved. 2223 * 2224 * @return A string holding the name of the resource. 2225 * 2226 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2227 * 2228 * @see #getResourcePackageName 2229 * @see #getResourceTypeName 2230 * @see #getResourceEntryName 2231 */ 2232 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2233 String str = mAssets.getResourceName(resid); 2234 if (str != null) return str; 2235 throw new NotFoundException("Unable to find resource ID #0x" 2236 + Integer.toHexString(resid)); 2237 } 2238 2239 /** 2240 * Return the package name for a given resource identifier. 2241 * 2242 * @param resid The resource identifier whose package name is to be 2243 * retrieved. 2244 * 2245 * @return A string holding the package name of the resource. 2246 * 2247 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2248 * 2249 * @see #getResourceName 2250 */ 2251 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2252 String str = mAssets.getResourcePackageName(resid); 2253 if (str != null) return str; 2254 throw new NotFoundException("Unable to find resource ID #0x" 2255 + Integer.toHexString(resid)); 2256 } 2257 2258 /** 2259 * Return the type name for a given resource identifier. 2260 * 2261 * @param resid The resource identifier whose type name is to be 2262 * retrieved. 2263 * 2264 * @return A string holding the type name of the resource. 2265 * 2266 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2267 * 2268 * @see #getResourceName 2269 */ 2270 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2271 String str = mAssets.getResourceTypeName(resid); 2272 if (str != null) return str; 2273 throw new NotFoundException("Unable to find resource ID #0x" 2274 + Integer.toHexString(resid)); 2275 } 2276 2277 /** 2278 * Return the entry name for a given resource identifier. 2279 * 2280 * @param resid The resource identifier whose entry name is to be 2281 * retrieved. 2282 * 2283 * @return A string holding the entry name of the resource. 2284 * 2285 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2286 * 2287 * @see #getResourceName 2288 */ 2289 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2290 String str = mAssets.getResourceEntryName(resid); 2291 if (str != null) return str; 2292 throw new NotFoundException("Unable to find resource ID #0x" 2293 + Integer.toHexString(resid)); 2294 } 2295 2296 /** 2297 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2298 * an XML file. You call this when you are at the parent tag of the 2299 * extra tags, and it will return once all of the child tags have been parsed. 2300 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2301 * 2302 * @param parser The parser from which to retrieve the extras. 2303 * @param outBundle A Bundle in which to place all parsed extras. 2304 * @throws XmlPullParserException 2305 * @throws IOException 2306 */ 2307 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2308 throws XmlPullParserException, IOException { 2309 int outerDepth = parser.getDepth(); 2310 int type; 2311 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2312 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2313 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2314 continue; 2315 } 2316 2317 String nodeName = parser.getName(); 2318 if (nodeName.equals("extra")) { 2319 parseBundleExtra("extra", parser, outBundle); 2320 XmlUtils.skipCurrentTag(parser); 2321 2322 } else { 2323 XmlUtils.skipCurrentTag(parser); 2324 } 2325 } 2326 } 2327 2328 /** 2329 * Parse a name/value pair out of an XML tag holding that data. The 2330 * AttributeSet must be holding the data defined by 2331 * {@link android.R.styleable#Extra}. The following value types are supported: 2332 * <ul> 2333 * <li> {@link TypedValue#TYPE_STRING}: 2334 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2335 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2336 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2337 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2338 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2339 * <li> {@link TypedValue#TYPE_FLOAT}: 2340 * {@link Bundle#putCharSequence Bundle.putFloat()} 2341 * </ul> 2342 * 2343 * @param tagName The name of the tag these attributes come from; this is 2344 * only used for reporting error messages. 2345 * @param attrs The attributes from which to retrieve the name/value pair. 2346 * @param outBundle The Bundle in which to place the parsed value. 2347 * @throws XmlPullParserException If the attributes are not valid. 2348 */ 2349 public void parseBundleExtra(String tagName, AttributeSet attrs, 2350 Bundle outBundle) throws XmlPullParserException { 2351 TypedArray sa = obtainAttributes(attrs, 2352 com.android.internal.R.styleable.Extra); 2353 2354 String name = sa.getString( 2355 com.android.internal.R.styleable.Extra_name); 2356 if (name == null) { 2357 sa.recycle(); 2358 throw new XmlPullParserException("<" + tagName 2359 + "> requires an android:name attribute at " 2360 + attrs.getPositionDescription()); 2361 } 2362 2363 TypedValue v = sa.peekValue( 2364 com.android.internal.R.styleable.Extra_value); 2365 if (v != null) { 2366 if (v.type == TypedValue.TYPE_STRING) { 2367 CharSequence cs = v.coerceToString(); 2368 outBundle.putCharSequence(name, cs); 2369 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2370 outBundle.putBoolean(name, v.data != 0); 2371 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2372 && v.type <= TypedValue.TYPE_LAST_INT) { 2373 outBundle.putInt(name, v.data); 2374 } else if (v.type == TypedValue.TYPE_FLOAT) { 2375 outBundle.putFloat(name, v.getFloat()); 2376 } else { 2377 sa.recycle(); 2378 throw new XmlPullParserException("<" + tagName 2379 + "> only supports string, integer, float, color, and boolean at " 2380 + attrs.getPositionDescription()); 2381 } 2382 } else { 2383 sa.recycle(); 2384 throw new XmlPullParserException("<" + tagName 2385 + "> requires an android:value or android:resource attribute at " 2386 + attrs.getPositionDescription()); 2387 } 2388 2389 sa.recycle(); 2390 } 2391 2392 /** 2393 * Retrieve underlying AssetManager storage for these resources. 2394 */ 2395 public final AssetManager getAssets() { 2396 return mAssets; 2397 } 2398 2399 /** 2400 * Call this to remove all cached loaded layout resources from the 2401 * Resources object. Only intended for use with performance testing 2402 * tools. 2403 */ 2404 public final void flushLayoutCache() { 2405 synchronized (mCachedXmlBlockIds) { 2406 // First see if this block is in our cache. 2407 final int num = mCachedXmlBlockIds.length; 2408 for (int i=0; i<num; i++) { 2409 mCachedXmlBlockIds[i] = -0; 2410 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2411 if (oldBlock != null) { 2412 oldBlock.close(); 2413 } 2414 mCachedXmlBlocks[i] = null; 2415 } 2416 } 2417 } 2418 2419 /** 2420 * Start preloading of resource data using this Resources object. Only 2421 * for use by the zygote process for loading common system resources. 2422 * {@hide} 2423 */ 2424 public final void startPreloading() { 2425 synchronized (sSync) { 2426 if (sPreloaded) { 2427 throw new IllegalStateException("Resources already preloaded"); 2428 } 2429 sPreloaded = true; 2430 mPreloading = true; 2431 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2432 mConfiguration.densityDpi = sPreloadedDensity; 2433 updateConfiguration(null, null); 2434 } 2435 } 2436 2437 /** 2438 * Called by zygote when it is done preloading resources, to change back 2439 * to normal Resources operation. 2440 */ 2441 public final void finishPreloading() { 2442 if (mPreloading) { 2443 mPreloading = false; 2444 flushLayoutCache(); 2445 } 2446 } 2447 2448 /** 2449 * @hide 2450 */ 2451 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2452 return sPreloadedDrawables[0]; 2453 } 2454 2455 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2456 int resourceId, String name) { 2457 // We allow preloading of resources even if they vary by font scale (which 2458 // doesn't impact resource selection) or density (which we handle specially by 2459 // simply turning off all preloading), as well as any other configs specified 2460 // by the caller. 2461 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2462 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2463 String resName; 2464 try { 2465 resName = getResourceName(resourceId); 2466 } catch (NotFoundException e) { 2467 resName = "?"; 2468 } 2469 // This should never happen in production, so we should log a 2470 // warning even if we're not debugging. 2471 Log.w(TAG, "Preloaded " + name + " resource #0x" 2472 + Integer.toHexString(resourceId) 2473 + " (" + resName + ") that varies with configuration!!"); 2474 return false; 2475 } 2476 if (TRACE_FOR_PRELOAD) { 2477 String resName; 2478 try { 2479 resName = getResourceName(resourceId); 2480 } catch (NotFoundException e) { 2481 resName = "?"; 2482 } 2483 Log.w(TAG, "Preloading " + name + " resource #0x" 2484 + Integer.toHexString(resourceId) 2485 + " (" + resName + ")"); 2486 } 2487 return true; 2488 } 2489 2490 @Nullable 2491 Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2492 if (TRACE_FOR_PRELOAD) { 2493 // Log only framework resources 2494 if ((id >>> 24) == 0x1) { 2495 final String name = getResourceName(id); 2496 if (name != null) { 2497 Log.d("PreloadDrawable", name); 2498 } 2499 } 2500 } 2501 2502 final boolean isColorDrawable; 2503 final DrawableCache caches; 2504 final long key; 2505 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2506 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2507 isColorDrawable = true; 2508 caches = mColorDrawableCache; 2509 key = value.data; 2510 } else { 2511 isColorDrawable = false; 2512 caches = mDrawableCache; 2513 key = (((long) value.assetCookie) << 32) | value.data; 2514 } 2515 2516 // First, check whether we have a cached version of this drawable 2517 // that was inflated against the specified theme. 2518 if (!mPreloading) { 2519 final Drawable cachedDrawable = caches.getInstance(key, theme); 2520 if (cachedDrawable != null) { 2521 return cachedDrawable; 2522 } 2523 } 2524 2525 // Next, check preloaded drawables. These may contain unresolved theme 2526 // attributes. 2527 final ConstantState cs; 2528 if (isColorDrawable) { 2529 cs = sPreloadedColorDrawables.get(key); 2530 } else { 2531 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2532 } 2533 2534 Drawable dr; 2535 if (cs != null) { 2536 dr = cs.newDrawable(this); 2537 } else if (isColorDrawable) { 2538 dr = new ColorDrawable(value.data); 2539 } else { 2540 dr = loadDrawableForCookie(value, id, null); 2541 } 2542 2543 // Determine if the drawable has unresolved theme attributes. If it 2544 // does, we'll need to apply a theme and store it in a theme-specific 2545 // cache. 2546 final boolean canApplyTheme = dr != null && dr.canApplyTheme(); 2547 if (canApplyTheme && theme != null) { 2548 dr = dr.mutate(); 2549 dr.applyTheme(theme); 2550 dr.clearMutated(); 2551 } 2552 2553 // If we were able to obtain a drawable, store it in the appropriate 2554 // cache: preload, not themed, null theme, or theme-specific. 2555 if (dr != null) { 2556 dr.setChangingConfigurations(value.changingConfigurations); 2557 cacheDrawable(value, isColorDrawable, caches, theme, canApplyTheme, key, dr); 2558 } 2559 2560 return dr; 2561 } 2562 2563 private void cacheDrawable(TypedValue value, boolean isColorDrawable, DrawableCache caches, 2564 Theme theme, boolean usesTheme, long key, Drawable dr) { 2565 final ConstantState cs = dr.getConstantState(); 2566 if (cs == null) { 2567 return; 2568 } 2569 2570 if (mPreloading) { 2571 final int changingConfigs = cs.getChangingConfigurations(); 2572 if (isColorDrawable) { 2573 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2574 sPreloadedColorDrawables.put(key, cs); 2575 } 2576 } else { 2577 if (verifyPreloadConfig( 2578 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2579 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2580 // If this resource does not vary based on layout direction, 2581 // we can put it in all of the preload maps. 2582 sPreloadedDrawables[0].put(key, cs); 2583 sPreloadedDrawables[1].put(key, cs); 2584 } else { 2585 // Otherwise, only in the layout dir we loaded it for. 2586 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2587 } 2588 } 2589 } 2590 } else { 2591 synchronized (mAccessLock) { 2592 caches.put(key, theme, cs, usesTheme); 2593 } 2594 } 2595 } 2596 2597 /** 2598 * Loads a drawable from XML or resources stream. 2599 */ 2600 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2601 if (value.string == null) { 2602 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2603 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2604 } 2605 2606 final String file = value.string.toString(); 2607 2608 if (TRACE_FOR_MISS_PRELOAD) { 2609 // Log only framework resources 2610 if ((id >>> 24) == 0x1) { 2611 final String name = getResourceName(id); 2612 if (name != null) { 2613 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2614 + ": " + name + " at " + file); 2615 } 2616 } 2617 } 2618 2619 if (DEBUG_LOAD) { 2620 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2621 } 2622 2623 final Drawable dr; 2624 2625 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2626 try { 2627 if (file.endsWith(".xml")) { 2628 final XmlResourceParser rp = loadXmlResourceParser( 2629 file, id, value.assetCookie, "drawable"); 2630 dr = Drawable.createFromXml(this, rp, theme); 2631 rp.close(); 2632 } else { 2633 final InputStream is = mAssets.openNonAsset( 2634 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2635 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2636 is.close(); 2637 } 2638 } catch (Exception e) { 2639 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2640 final NotFoundException rnf = new NotFoundException( 2641 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2642 rnf.initCause(e); 2643 throw rnf; 2644 } 2645 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2646 2647 return dr; 2648 } 2649 2650 @Nullable 2651 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2652 throws NotFoundException { 2653 if (TRACE_FOR_PRELOAD) { 2654 // Log only framework resources 2655 if ((id >>> 24) == 0x1) { 2656 final String name = getResourceName(id); 2657 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2658 } 2659 } 2660 2661 final long key = (((long) value.assetCookie) << 32) | value.data; 2662 2663 ColorStateList csl; 2664 2665 // Handle inline color definitions. 2666 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2667 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2668 final android.content.res.ConstantState<ColorStateList> factory = 2669 sPreloadedColorStateLists.get(key); 2670 if (factory != null) { 2671 return factory.newInstance(); 2672 } 2673 2674 csl = ColorStateList.valueOf(value.data); 2675 2676 if (mPreloading) { 2677 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2678 "color")) { 2679 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2680 } 2681 } 2682 2683 return csl; 2684 } 2685 2686 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2687 csl = cache.getInstance(key, theme); 2688 if (csl != null) { 2689 return csl; 2690 } 2691 2692 final android.content.res.ConstantState<ColorStateList> factory = 2693 sPreloadedColorStateLists.get(key); 2694 if (factory != null) { 2695 csl = factory.newInstance(this, theme); 2696 } 2697 2698 if (csl == null) { 2699 csl = loadColorStateListForCookie(value, id, theme); 2700 } 2701 2702 if (csl != null) { 2703 if (mPreloading) { 2704 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2705 "color")) { 2706 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2707 } 2708 } else { 2709 cache.put(key, theme, csl.getConstantState()); 2710 } 2711 } 2712 2713 return csl; 2714 } 2715 2716 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2717 if (value.string == null) { 2718 throw new UnsupportedOperationException( 2719 "Can't convert to color state list: type=0x" + value.type); 2720 } 2721 2722 final String file = value.string.toString(); 2723 2724 if (TRACE_FOR_MISS_PRELOAD) { 2725 // Log only framework resources 2726 if ((id >>> 24) == 0x1) { 2727 final String name = getResourceName(id); 2728 if (name != null) { 2729 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2730 + ": " + name + " at " + file); 2731 } 2732 } 2733 } 2734 2735 if (DEBUG_LOAD) { 2736 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2737 } 2738 2739 final ColorStateList csl; 2740 2741 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2742 if (file.endsWith(".xml")) { 2743 try { 2744 final XmlResourceParser rp = loadXmlResourceParser( 2745 file, id, value.assetCookie, "colorstatelist"); 2746 csl = ColorStateList.createFromXml(this, rp, theme); 2747 rp.close(); 2748 } catch (Exception e) { 2749 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2750 final NotFoundException rnf = new NotFoundException( 2751 "File " + file + " from color state list resource ID #0x" 2752 + Integer.toHexString(id)); 2753 rnf.initCause(e); 2754 throw rnf; 2755 } 2756 } else { 2757 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2758 throw new NotFoundException( 2759 "File " + file + " from drawable resource ID #0x" 2760 + Integer.toHexString(id) + ": .xml extension required"); 2761 } 2762 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2763 2764 return csl; 2765 } 2766 2767 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2768 throws NotFoundException { 2769 synchronized (mAccessLock) { 2770 TypedValue value = mTmpValue; 2771 if (value == null) { 2772 mTmpValue = value = new TypedValue(); 2773 } 2774 getValue(id, value, true); 2775 if (value.type == TypedValue.TYPE_STRING) { 2776 return loadXmlResourceParser(value.string.toString(), id, 2777 value.assetCookie, type); 2778 } 2779 throw new NotFoundException( 2780 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2781 + Integer.toHexString(value.type) + " is not valid"); 2782 } 2783 } 2784 2785 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2786 int assetCookie, String type) throws NotFoundException { 2787 if (id != 0) { 2788 try { 2789 // These may be compiled... 2790 synchronized (mCachedXmlBlockIds) { 2791 // First see if this block is in our cache. 2792 final int num = mCachedXmlBlockIds.length; 2793 for (int i=0; i<num; i++) { 2794 if (mCachedXmlBlockIds[i] == id) { 2795 //System.out.println("**** REUSING XML BLOCK! id=" 2796 // + id + ", index=" + i); 2797 return mCachedXmlBlocks[i].newParser(); 2798 } 2799 } 2800 2801 // Not in the cache, create a new block and put it at 2802 // the next slot in the cache. 2803 XmlBlock block = mAssets.openXmlBlockAsset( 2804 assetCookie, file); 2805 if (block != null) { 2806 int pos = mLastCachedXmlBlockIndex+1; 2807 if (pos >= num) pos = 0; 2808 mLastCachedXmlBlockIndex = pos; 2809 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2810 if (oldBlock != null) { 2811 oldBlock.close(); 2812 } 2813 mCachedXmlBlockIds[pos] = id; 2814 mCachedXmlBlocks[pos] = block; 2815 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2816 // + id + ", index=" + pos); 2817 return block.newParser(); 2818 } 2819 } 2820 } catch (Exception e) { 2821 NotFoundException rnf = new NotFoundException( 2822 "File " + file + " from xml type " + type + " resource ID #0x" 2823 + Integer.toHexString(id)); 2824 rnf.initCause(e); 2825 throw rnf; 2826 } 2827 } 2828 2829 throw new NotFoundException( 2830 "File " + file + " from xml type " + type + " resource ID #0x" 2831 + Integer.toHexString(id)); 2832 } 2833 2834 /** 2835 * Obtains styled attributes from the theme, if available, or unstyled 2836 * resources if the theme is null. 2837 * 2838 * @hide 2839 */ 2840 public static TypedArray obtainAttributes( 2841 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2842 if (theme == null) { 2843 return res.obtainAttributes(set, attrs); 2844 } 2845 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2846 } 2847 2848 private Resources() { 2849 mAssets = AssetManager.getSystem(); 2850 // NOTE: Intentionally leaving this uninitialized (all values set 2851 // to zero), so that anyone who tries to do something that requires 2852 // metrics will get a very wrong value. 2853 mConfiguration.setToDefaults(); 2854 mMetrics.setToDefaults(); 2855 updateConfiguration(null, null); 2856 mAssets.ensureStringBlocks(); 2857 } 2858 } 2859