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 com.android.internal.util.XmlUtils; 20 21 import org.xmlpull.v1.XmlPullParser; 22 import org.xmlpull.v1.XmlPullParserException; 23 24 import android.content.pm.ActivityInfo; 25 import android.graphics.Movie; 26 import android.graphics.drawable.Drawable; 27 import android.graphics.drawable.ColorDrawable; 28 import android.graphics.drawable.Drawable.ConstantState; 29 import android.os.Build; 30 import android.os.Bundle; 31 import android.util.AttributeSet; 32 import android.util.DisplayMetrics; 33 import android.util.Log; 34 import android.util.Slog; 35 import android.util.TypedValue; 36 import android.util.LongSparseArray; 37 38 import java.io.IOException; 39 import java.io.InputStream; 40 import java.lang.ref.WeakReference; 41 import java.util.Locale; 42 43 import libcore.icu.NativePluralRules; 44 45 /** 46 * Class for accessing an application's resources. This sits on top of the 47 * asset manager of the application (accessible through {@link #getAssets}) and 48 * provides a high-level API for getting typed data from the assets. 49 * 50 * <p>The Android resource system keeps track of all non-code assets associated with an 51 * application. You can use this class to access your application's resources. You can generally 52 * acquire the {@link android.content.res.Resources} instance associated with your application 53 * with {@link android.content.Context#getResources getResources()}.</p> 54 * 55 * <p>The Android SDK tools compile your application's resources into the application binary 56 * at build time. To use a resource, you must install it correctly in the source tree (inside 57 * your project's {@code res/} directory) and build your application. As part of the build 58 * process, the SDK tools generate symbols for each resource, which you can use in your application 59 * code to access the resources.</p> 60 * 61 * <p>Using application resources makes it easy to update various characteristics of your 62 * application without modifying code, and—by providing sets of alternative 63 * resources—enables you to optimize your application for a variety of device configurations 64 * (such as for different languages and screen sizes). This is an important aspect of developing 65 * Android applications that are compatible on different types of devices.</p> 66 * 67 * <p>For more information about using resources, see the documentation about <a 68 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 69 */ 70 public class Resources { 71 static final String TAG = "Resources"; 72 private static final boolean DEBUG_LOAD = false; 73 private static final boolean DEBUG_CONFIG = false; 74 private static final boolean DEBUG_ATTRIBUTES_CACHE = false; 75 private static final boolean TRACE_FOR_PRELOAD = false; 76 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 77 78 private static final int ID_OTHER = 0x01000004; 79 80 private static final Object mSync = new Object(); 81 /*package*/ static Resources mSystem = null; 82 83 // Information about preloaded resources. Note that they are not 84 // protected by a lock, because while preloading in zygote we are all 85 // single-threaded, and after that these are immutable. 86 private static final LongSparseArray<Drawable.ConstantState> sPreloadedDrawables 87 = new LongSparseArray<Drawable.ConstantState>(); 88 private static final LongSparseArray<ColorStateList> sPreloadedColorStateLists 89 = new LongSparseArray<ColorStateList>(); 90 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 91 = new LongSparseArray<Drawable.ConstantState>(); 92 private static boolean sPreloaded; 93 private static int sPreloadedDensity; 94 95 /*package*/ final TypedValue mTmpValue = new TypedValue(); 96 /*package*/ final Configuration mTmpConfig = new Configuration(); 97 98 // These are protected by the mTmpValue lock. 99 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 100 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 101 private final LongSparseArray<WeakReference<ColorStateList> > mColorStateListCache 102 = new LongSparseArray<WeakReference<ColorStateList> >(); 103 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 104 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 105 private boolean mPreloading; 106 107 /*package*/ TypedArray mCachedStyledAttributes = null; 108 RuntimeException mLastRetrievedAttrs = null; 109 110 private int mLastCachedXmlBlockIndex = -1; 111 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 112 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 113 114 /*package*/ final AssetManager mAssets; 115 private final Configuration mConfiguration = new Configuration(); 116 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 117 private NativePluralRules mPluralRule; 118 119 private CompatibilityInfo mCompatibilityInfo; 120 121 /** @hide */ 122 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 123 return selectSystemTheme(curTheme, targetSdkVersion, 124 com.android.internal.R.style.Theme, 125 com.android.internal.R.style.Theme_Holo, 126 com.android.internal.R.style.Theme_DeviceDefault); 127 } 128 129 /** @hide */ 130 public static int selectSystemTheme(int curTheme, int targetSdkVersion, 131 int orig, int holo, int deviceDefault) { 132 if (curTheme != 0) { 133 return curTheme; 134 } 135 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 136 return orig; 137 } 138 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 139 return holo; 140 } 141 return deviceDefault; 142 } 143 144 /** 145 * This exception is thrown by the resource APIs when a requested resource 146 * can not be found. 147 */ 148 public static class NotFoundException extends RuntimeException { 149 public NotFoundException() { 150 } 151 152 public NotFoundException(String name) { 153 super(name); 154 } 155 } 156 157 /** 158 * Create a new Resources object on top of an existing set of assets in an 159 * AssetManager. 160 * 161 * @param assets Previously created AssetManager. 162 * @param metrics Current display metrics to consider when 163 * selecting/computing resource values. 164 * @param config Desired device configuration to consider when 165 * selecting/computing resource values (optional). 166 */ 167 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 168 this(assets, metrics, config, null); 169 } 170 171 /** 172 * Creates a new Resources object with CompatibilityInfo. 173 * 174 * @param assets Previously created AssetManager. 175 * @param metrics Current display metrics to consider when 176 * selecting/computing resource values. 177 * @param config Desired device configuration to consider when 178 * selecting/computing resource values (optional). 179 * @param compInfo this resource's compatibility info. It will use the default compatibility 180 * info when it's null. 181 * @hide 182 */ 183 public Resources(AssetManager assets, DisplayMetrics metrics, 184 Configuration config, CompatibilityInfo compInfo) { 185 mAssets = assets; 186 mMetrics.setToDefaults(); 187 mCompatibilityInfo = compInfo; 188 updateConfiguration(config, metrics); 189 assets.ensureStringBlocks(); 190 } 191 192 /** 193 * Return a global shared Resources object that provides access to only 194 * system resources (no application resources), and is not configured for 195 * the current screen (can not use dimension units, does not change based 196 * on orientation, etc). 197 */ 198 public static Resources getSystem() { 199 synchronized (mSync) { 200 Resources ret = mSystem; 201 if (ret == null) { 202 ret = new Resources(); 203 mSystem = ret; 204 } 205 206 return ret; 207 } 208 } 209 210 /** 211 * Return the string value associated with a particular resource ID. The 212 * returned object will be a String if this is a plain string; it will be 213 * some other type of CharSequence if it is styled. 214 * {@more} 215 * 216 * @param id The desired resource identifier, as generated by the aapt 217 * tool. This integer encodes the package, type, and resource 218 * entry. The value 0 is an invalid identifier. 219 * 220 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 221 * 222 * @return CharSequence The string data associated with the resource, plus 223 * possibly styled text information. 224 */ 225 public CharSequence getText(int id) throws NotFoundException { 226 CharSequence res = mAssets.getResourceText(id); 227 if (res != null) { 228 return res; 229 } 230 throw new NotFoundException("String resource ID #0x" 231 + Integer.toHexString(id)); 232 } 233 234 /** 235 * Return the character sequence associated with a particular resource ID for a particular 236 * numerical quantity. 237 * 238 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 239 * Resources</a> for more on quantity strings. 240 * 241 * @param id The desired resource identifier, as generated by the aapt 242 * tool. This integer encodes the package, type, and resource 243 * entry. The value 0 is an invalid identifier. 244 * @param quantity The number used to get the correct string for the current language's 245 * plural rules. 246 * 247 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 248 * 249 * @return CharSequence The string data associated with the resource, plus 250 * possibly styled text information. 251 */ 252 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 253 NativePluralRules rule = getPluralRule(); 254 CharSequence res = mAssets.getResourceBagText(id, 255 attrForQuantityCode(rule.quantityForInt(quantity))); 256 if (res != null) { 257 return res; 258 } 259 res = mAssets.getResourceBagText(id, ID_OTHER); 260 if (res != null) { 261 return res; 262 } 263 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 264 + " quantity=" + quantity 265 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 266 } 267 268 private NativePluralRules getPluralRule() { 269 synchronized (mSync) { 270 if (mPluralRule == null) { 271 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 272 } 273 return mPluralRule; 274 } 275 } 276 277 private static int attrForQuantityCode(int quantityCode) { 278 switch (quantityCode) { 279 case NativePluralRules.ZERO: return 0x01000005; 280 case NativePluralRules.ONE: return 0x01000006; 281 case NativePluralRules.TWO: return 0x01000007; 282 case NativePluralRules.FEW: return 0x01000008; 283 case NativePluralRules.MANY: return 0x01000009; 284 default: return ID_OTHER; 285 } 286 } 287 288 private static String stringForQuantityCode(int quantityCode) { 289 switch (quantityCode) { 290 case NativePluralRules.ZERO: return "zero"; 291 case NativePluralRules.ONE: return "one"; 292 case NativePluralRules.TWO: return "two"; 293 case NativePluralRules.FEW: return "few"; 294 case NativePluralRules.MANY: return "many"; 295 default: return "other"; 296 } 297 } 298 299 /** 300 * Return the string value associated with a particular resource ID. It 301 * will be stripped of any styled text information. 302 * {@more} 303 * 304 * @param id The desired resource identifier, as generated by the aapt 305 * tool. This integer encodes the package, type, and resource 306 * entry. The value 0 is an invalid identifier. 307 * 308 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 309 * 310 * @return String The string data associated with the resource, 311 * stripped of styled text information. 312 */ 313 public String getString(int id) throws NotFoundException { 314 CharSequence res = getText(id); 315 if (res != null) { 316 return res.toString(); 317 } 318 throw new NotFoundException("String resource ID #0x" 319 + Integer.toHexString(id)); 320 } 321 322 323 /** 324 * Return the string value associated with a particular resource ID, 325 * substituting the format arguments as defined in {@link java.util.Formatter} 326 * and {@link java.lang.String#format}. It will be stripped of any styled text 327 * information. 328 * {@more} 329 * 330 * @param id The desired resource identifier, as generated by the aapt 331 * tool. This integer encodes the package, type, and resource 332 * entry. The value 0 is an invalid identifier. 333 * 334 * @param formatArgs The format arguments that will be used for substitution. 335 * 336 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 337 * 338 * @return String The string data associated with the resource, 339 * stripped of styled text information. 340 */ 341 public String getString(int id, Object... formatArgs) throws NotFoundException { 342 String raw = getString(id); 343 return String.format(mConfiguration.locale, raw, formatArgs); 344 } 345 346 /** 347 * Return the string value associated with a particular resource ID for a particular 348 * numerical quantity, substituting the format arguments as defined in 349 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 350 * stripped of any styled text information. 351 * {@more} 352 * 353 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 354 * Resources</a> for more on quantity strings. 355 * 356 * @param id The desired resource identifier, as generated by the aapt 357 * tool. This integer encodes the package, type, and resource 358 * entry. The value 0 is an invalid identifier. 359 * @param quantity The number used to get the correct string for the current language's 360 * plural rules. 361 * @param formatArgs The format arguments that will be used for substitution. 362 * 363 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 364 * 365 * @return String The string data associated with the resource, 366 * stripped of styled text information. 367 */ 368 public String getQuantityString(int id, int quantity, Object... formatArgs) 369 throws NotFoundException { 370 String raw = getQuantityText(id, quantity).toString(); 371 return String.format(mConfiguration.locale, raw, formatArgs); 372 } 373 374 /** 375 * Return the string value associated with a particular resource ID for a particular 376 * numerical quantity. 377 * 378 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 379 * Resources</a> for more on quantity strings. 380 * 381 * @param id The desired resource identifier, as generated by the aapt 382 * tool. This integer encodes the package, type, and resource 383 * entry. The value 0 is an invalid identifier. 384 * @param quantity The number used to get the correct string for the current language's 385 * plural rules. 386 * 387 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 388 * 389 * @return String The string data associated with the resource, 390 * stripped of styled text information. 391 */ 392 public String getQuantityString(int id, int quantity) throws NotFoundException { 393 return getQuantityText(id, quantity).toString(); 394 } 395 396 /** 397 * Return the string value associated with a particular resource ID. The 398 * returned object will be a String if this is a plain string; it will be 399 * some other type of CharSequence if it is styled. 400 * 401 * @param id The desired resource identifier, as generated by the aapt 402 * tool. This integer encodes the package, type, and resource 403 * entry. The value 0 is an invalid identifier. 404 * 405 * @param def The default CharSequence to return. 406 * 407 * @return CharSequence The string data associated with the resource, plus 408 * possibly styled text information, or def if id is 0 or not found. 409 */ 410 public CharSequence getText(int id, CharSequence def) { 411 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 412 return res != null ? res : def; 413 } 414 415 /** 416 * Return the styled text array associated with a particular resource ID. 417 * 418 * @param id The desired resource identifier, as generated by the aapt 419 * tool. This integer encodes the package, type, and resource 420 * entry. The value 0 is an invalid identifier. 421 * 422 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 423 * 424 * @return The styled text array associated with the resource. 425 */ 426 public CharSequence[] getTextArray(int id) throws NotFoundException { 427 CharSequence[] res = mAssets.getResourceTextArray(id); 428 if (res != null) { 429 return res; 430 } 431 throw new NotFoundException("Text array resource ID #0x" 432 + Integer.toHexString(id)); 433 } 434 435 /** 436 * Return the string array associated with a particular resource ID. 437 * 438 * @param id The desired resource identifier, as generated by the aapt 439 * tool. This integer encodes the package, type, and resource 440 * entry. The value 0 is an invalid identifier. 441 * 442 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 443 * 444 * @return The string array associated with the resource. 445 */ 446 public String[] getStringArray(int id) throws NotFoundException { 447 String[] res = mAssets.getResourceStringArray(id); 448 if (res != null) { 449 return res; 450 } 451 throw new NotFoundException("String array resource ID #0x" 452 + Integer.toHexString(id)); 453 } 454 455 /** 456 * Return the int array associated with a particular resource ID. 457 * 458 * @param id The desired resource identifier, as generated by the aapt 459 * tool. This integer encodes the package, type, and resource 460 * entry. The value 0 is an invalid identifier. 461 * 462 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 463 * 464 * @return The int array associated with the resource. 465 */ 466 public int[] getIntArray(int id) throws NotFoundException { 467 int[] res = mAssets.getArrayIntResource(id); 468 if (res != null) { 469 return res; 470 } 471 throw new NotFoundException("Int array resource ID #0x" 472 + Integer.toHexString(id)); 473 } 474 475 /** 476 * Return an array of heterogeneous values. 477 * 478 * @param id The desired resource identifier, as generated by the aapt 479 * tool. This integer encodes the package, type, and resource 480 * entry. The value 0 is an invalid identifier. 481 * 482 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 483 * 484 * @return Returns a TypedArray holding an array of the array values. 485 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 486 * when done with it. 487 */ 488 public TypedArray obtainTypedArray(int id) throws NotFoundException { 489 int len = mAssets.getArraySize(id); 490 if (len < 0) { 491 throw new NotFoundException("Array resource ID #0x" 492 + Integer.toHexString(id)); 493 } 494 495 TypedArray array = getCachedStyledAttributes(len); 496 array.mLength = mAssets.retrieveArray(id, array.mData); 497 array.mIndices[0] = 0; 498 499 return array; 500 } 501 502 /** 503 * Retrieve a dimensional for a particular resource ID. Unit 504 * conversions are based on the current {@link DisplayMetrics} associated 505 * with the resources. 506 * 507 * @param id The desired resource identifier, as generated by the aapt 508 * tool. This integer encodes the package, type, and resource 509 * entry. The value 0 is an invalid identifier. 510 * 511 * @return Resource dimension value multiplied by the appropriate 512 * metric. 513 * 514 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 515 * 516 * @see #getDimensionPixelOffset 517 * @see #getDimensionPixelSize 518 */ 519 public float getDimension(int id) throws NotFoundException { 520 synchronized (mTmpValue) { 521 TypedValue value = mTmpValue; 522 getValue(id, value, true); 523 if (value.type == TypedValue.TYPE_DIMENSION) { 524 return TypedValue.complexToDimension(value.data, mMetrics); 525 } 526 throw new NotFoundException( 527 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 528 + Integer.toHexString(value.type) + " is not valid"); 529 } 530 } 531 532 /** 533 * Retrieve a dimensional for a particular resource ID for use 534 * as an offset in raw pixels. This is the same as 535 * {@link #getDimension}, except the returned value is converted to 536 * integer pixels for you. An offset conversion involves simply 537 * truncating the base value to an integer. 538 * 539 * @param id The desired resource identifier, as generated by the aapt 540 * tool. This integer encodes the package, type, and resource 541 * entry. The value 0 is an invalid identifier. 542 * 543 * @return Resource dimension value multiplied by the appropriate 544 * metric and truncated to integer pixels. 545 * 546 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 547 * 548 * @see #getDimension 549 * @see #getDimensionPixelSize 550 */ 551 public int getDimensionPixelOffset(int id) throws NotFoundException { 552 synchronized (mTmpValue) { 553 TypedValue value = mTmpValue; 554 getValue(id, value, true); 555 if (value.type == TypedValue.TYPE_DIMENSION) { 556 return TypedValue.complexToDimensionPixelOffset( 557 value.data, mMetrics); 558 } 559 throw new NotFoundException( 560 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 561 + Integer.toHexString(value.type) + " is not valid"); 562 } 563 } 564 565 /** 566 * Retrieve a dimensional for a particular resource ID for use 567 * as a size in raw pixels. This is the same as 568 * {@link #getDimension}, except the returned value is converted to 569 * integer pixels for use as a size. A size conversion involves 570 * rounding the base value, and ensuring that a non-zero base value 571 * is at least one pixel in size. 572 * 573 * @param id The desired resource identifier, as generated by the aapt 574 * tool. This integer encodes the package, type, and resource 575 * entry. The value 0 is an invalid identifier. 576 * 577 * @return Resource dimension value multiplied by the appropriate 578 * metric and truncated to integer pixels. 579 * 580 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 581 * 582 * @see #getDimension 583 * @see #getDimensionPixelOffset 584 */ 585 public int getDimensionPixelSize(int id) throws NotFoundException { 586 synchronized (mTmpValue) { 587 TypedValue value = mTmpValue; 588 getValue(id, value, true); 589 if (value.type == TypedValue.TYPE_DIMENSION) { 590 return TypedValue.complexToDimensionPixelSize( 591 value.data, mMetrics); 592 } 593 throw new NotFoundException( 594 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 595 + Integer.toHexString(value.type) + " is not valid"); 596 } 597 } 598 599 /** 600 * Retrieve a fractional unit for a particular resource ID. 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 * @param base The base value of this fraction. In other words, a 606 * standard fraction is multiplied by this value. 607 * @param pbase The parent base value of this fraction. In other 608 * words, a parent fraction (nn%p) is multiplied by this 609 * value. 610 * 611 * @return Attribute fractional value multiplied by the appropriate 612 * base value. 613 * 614 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 615 */ 616 public float getFraction(int id, int base, int pbase) { 617 synchronized (mTmpValue) { 618 TypedValue value = mTmpValue; 619 getValue(id, value, true); 620 if (value.type == TypedValue.TYPE_FRACTION) { 621 return TypedValue.complexToFraction(value.data, base, pbase); 622 } 623 throw new NotFoundException( 624 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 625 + Integer.toHexString(value.type) + " is not valid"); 626 } 627 } 628 629 /** 630 * Return a drawable object associated with a particular resource ID. 631 * Various types of objects will be returned depending on the underlying 632 * resource -- for example, a solid color, PNG image, scalable image, etc. 633 * The Drawable API hides these implementation details. 634 * 635 * <p class="note"><strong>Note:</strong> Prior to 636 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 637 * would not correctly retrieve the final configuration density when 638 * the resource ID passed here is an alias to another Drawable resource. 639 * This means that if the density configuration of the alias resource 640 * is different than the actual resource, the density of the returned 641 * Drawable would be incorrect, resulting in bad scaling. To work 642 * around this, you can instead retrieve the Drawable through 643 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 644 * {@link android.content.Context#obtainStyledAttributes(int[]) 645 * Context.obtainStyledAttributes} with 646 * an array containing the resource ID of interest to create the TypedArray.</p> 647 * 648 * @param id The desired resource identifier, as generated by the aapt 649 * tool. This integer encodes the package, type, and resource 650 * entry. The value 0 is an invalid identifier. 651 * 652 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 653 * 654 * @return Drawable An object that can be used to draw this resource. 655 */ 656 public Drawable getDrawable(int id) throws NotFoundException { 657 synchronized (mTmpValue) { 658 TypedValue value = mTmpValue; 659 getValue(id, value, true); 660 return loadDrawable(value, id); 661 } 662 } 663 664 /** 665 * Return a drawable object associated with a particular resource ID for the 666 * given screen density in DPI. This will set the drawable's density to be 667 * the device's density multiplied by the ratio of actual drawable density 668 * to requested density. This allows the drawable to be scaled up to the 669 * correct size if needed. Various types of objects will be returned 670 * depending on the underlying resource -- for example, a solid color, PNG 671 * image, scalable image, etc. The Drawable API hides these implementation 672 * details. 673 * 674 * @param id The desired resource identifier, as generated by the aapt tool. 675 * This integer encodes the package, type, and resource entry. 676 * The value 0 is an invalid identifier. 677 * @param density the desired screen density indicated by the resource as 678 * found in {@link DisplayMetrics}. 679 * @throws NotFoundException Throws NotFoundException if the given ID does 680 * not exist. 681 * @return Drawable An object that can be used to draw this resource. 682 */ 683 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 684 synchronized (mTmpValue) { 685 TypedValue value = mTmpValue; 686 getValueForDensity(id, density, value, true); 687 688 /* 689 * Pretend the requested density is actually the display density. If 690 * the drawable returned is not the requested density, then force it 691 * to be scaled later by dividing its density by the ratio of 692 * requested density to actual device density. Drawables that have 693 * undefined density or no density don't need to be handled here. 694 */ 695 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 696 if (value.density == density) { 697 value.density = mMetrics.densityDpi; 698 } else { 699 value.density = (value.density * mMetrics.densityDpi) / density; 700 } 701 } 702 703 return loadDrawable(value, id); 704 } 705 } 706 707 /** 708 * Return a movie object associated with the particular resource ID. 709 * @param id The desired resource identifier, as generated by the aapt 710 * tool. This integer encodes the package, type, and resource 711 * entry. The value 0 is an invalid identifier. 712 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 713 * 714 */ 715 public Movie getMovie(int id) throws NotFoundException { 716 InputStream is = openRawResource(id); 717 Movie movie = Movie.decodeStream(is); 718 try { 719 is.close(); 720 } 721 catch (java.io.IOException e) { 722 // don't care, since the return value is valid 723 } 724 return movie; 725 } 726 727 /** 728 * Return a color integer associated with a particular resource ID. 729 * If the resource holds a complex 730 * {@link android.content.res.ColorStateList}, then the default color from 731 * the set is returned. 732 * 733 * @param id The desired resource identifier, as generated by the aapt 734 * tool. This integer encodes the package, type, and resource 735 * entry. The value 0 is an invalid identifier. 736 * 737 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 738 * 739 * @return Returns a single color value in the form 0xAARRGGBB. 740 */ 741 public int getColor(int id) throws NotFoundException { 742 synchronized (mTmpValue) { 743 TypedValue value = mTmpValue; 744 getValue(id, value, true); 745 if (value.type >= TypedValue.TYPE_FIRST_INT 746 && value.type <= TypedValue.TYPE_LAST_INT) { 747 return value.data; 748 } else if (value.type == TypedValue.TYPE_STRING) { 749 ColorStateList csl = loadColorStateList(mTmpValue, id); 750 return csl.getDefaultColor(); 751 } 752 throw new NotFoundException( 753 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 754 + Integer.toHexString(value.type) + " is not valid"); 755 } 756 } 757 758 /** 759 * Return a color state list associated with a particular resource ID. The 760 * resource may contain either a single raw color value, or a complex 761 * {@link android.content.res.ColorStateList} holding multiple possible colors. 762 * 763 * @param id The desired resource identifier of a {@link ColorStateList}, 764 * as generated by the aapt tool. This integer encodes the package, type, and resource 765 * entry. The value 0 is an invalid identifier. 766 * 767 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 768 * 769 * @return Returns a ColorStateList object containing either a single 770 * solid color or multiple colors that can be selected based on a state. 771 */ 772 public ColorStateList getColorStateList(int id) throws NotFoundException { 773 synchronized (mTmpValue) { 774 TypedValue value = mTmpValue; 775 getValue(id, value, true); 776 return loadColorStateList(value, id); 777 } 778 } 779 780 /** 781 * Return a boolean associated with a particular resource ID. This can be 782 * used with any integral resource value, and will return true if it is 783 * non-zero. 784 * 785 * @param id The desired resource identifier, as generated by the aapt 786 * tool. This integer encodes the package, type, and resource 787 * entry. The value 0 is an invalid identifier. 788 * 789 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 790 * 791 * @return Returns the boolean value contained in the resource. 792 */ 793 public boolean getBoolean(int id) throws NotFoundException { 794 synchronized (mTmpValue) { 795 TypedValue value = mTmpValue; 796 getValue(id, value, true); 797 if (value.type >= TypedValue.TYPE_FIRST_INT 798 && value.type <= TypedValue.TYPE_LAST_INT) { 799 return value.data != 0; 800 } 801 throw new NotFoundException( 802 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 803 + Integer.toHexString(value.type) + " is not valid"); 804 } 805 } 806 807 /** 808 * Return an integer associated with a particular resource ID. 809 * 810 * @param id The desired resource identifier, as generated by the aapt 811 * tool. This integer encodes the package, type, and resource 812 * entry. The value 0 is an invalid identifier. 813 * 814 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 815 * 816 * @return Returns the integer value contained in the resource. 817 */ 818 public int getInteger(int id) throws NotFoundException { 819 synchronized (mTmpValue) { 820 TypedValue value = mTmpValue; 821 getValue(id, value, true); 822 if (value.type >= TypedValue.TYPE_FIRST_INT 823 && value.type <= TypedValue.TYPE_LAST_INT) { 824 return value.data; 825 } 826 throw new NotFoundException( 827 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 828 + Integer.toHexString(value.type) + " is not valid"); 829 } 830 } 831 832 /** 833 * Return an XmlResourceParser through which you can read a view layout 834 * description for the given resource ID. This parser has limited 835 * functionality -- in particular, you can't change its input, and only 836 * the high-level events are available. 837 * 838 * <p>This function is really a simple wrapper for calling 839 * {@link #getXml} with a layout resource. 840 * 841 * @param id The desired resource identifier, as generated by the aapt 842 * tool. This integer encodes the package, type, and resource 843 * entry. The value 0 is an invalid identifier. 844 * 845 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 846 * 847 * @return A new parser object through which you can read 848 * the XML data. 849 * 850 * @see #getXml 851 */ 852 public XmlResourceParser getLayout(int id) throws NotFoundException { 853 return loadXmlResourceParser(id, "layout"); 854 } 855 856 /** 857 * Return an XmlResourceParser through which you can read an animation 858 * description for the given resource ID. This parser has limited 859 * functionality -- in particular, you can't change its input, and only 860 * the high-level events are available. 861 * 862 * <p>This function is really a simple wrapper for calling 863 * {@link #getXml} with an animation resource. 864 * 865 * @param id The desired resource identifier, as generated by the aapt 866 * tool. This integer encodes the package, type, and resource 867 * entry. The value 0 is an invalid identifier. 868 * 869 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 870 * 871 * @return A new parser object through which you can read 872 * the XML data. 873 * 874 * @see #getXml 875 */ 876 public XmlResourceParser getAnimation(int id) throws NotFoundException { 877 return loadXmlResourceParser(id, "anim"); 878 } 879 880 /** 881 * Return an XmlResourceParser through which you can read a generic XML 882 * resource for the given resource ID. 883 * 884 * <p>The XmlPullParser implementation returned here has some limited 885 * functionality. In particular, you can't change its input, and only 886 * high-level parsing events are available (since the document was 887 * pre-parsed for you at build time, which involved merging text and 888 * stripping comments). 889 * 890 * @param id The desired resource identifier, as generated by the aapt 891 * tool. This integer encodes the package, type, and resource 892 * entry. The value 0 is an invalid identifier. 893 * 894 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 895 * 896 * @return A new parser object through which you can read 897 * the XML data. 898 * 899 * @see android.util.AttributeSet 900 */ 901 public XmlResourceParser getXml(int id) throws NotFoundException { 902 return loadXmlResourceParser(id, "xml"); 903 } 904 905 /** 906 * Open a data stream for reading a raw resource. This can only be used 907 * with resources whose value is the name of an asset files -- that is, it can be 908 * used to open drawable, sound, and raw resources; it will fail on string 909 * and color resources. 910 * 911 * @param id The resource identifier to open, as generated by the appt 912 * tool. 913 * 914 * @return InputStream Access to the resource data. 915 * 916 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 917 * 918 */ 919 public InputStream openRawResource(int id) throws NotFoundException { 920 synchronized (mTmpValue) { 921 return openRawResource(id, mTmpValue); 922 } 923 } 924 925 /** 926 * Open a data stream for reading a raw resource. This can only be used 927 * with resources whose value is the name of an asset file -- that is, it can be 928 * used to open drawable, sound, and raw resources; it will fail on string 929 * and color resources. 930 * 931 * @param id The resource identifier to open, as generated by the appt tool. 932 * @param value The TypedValue object to hold the resource information. 933 * 934 * @return InputStream Access to the resource data. 935 * 936 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 937 */ 938 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 939 getValue(id, value, true); 940 941 try { 942 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 943 AssetManager.ACCESS_STREAMING); 944 } catch (Exception e) { 945 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 946 " from drawable resource ID #0x" + Integer.toHexString(id)); 947 rnf.initCause(e); 948 throw rnf; 949 } 950 } 951 952 /** 953 * Open a file descriptor for reading a raw resource. This can only be used 954 * with resources whose value is the name of an asset files -- that is, it can be 955 * used to open drawable, sound, and raw resources; it will fail on string 956 * and color resources. 957 * 958 * <p>This function only works for resources that are stored in the package 959 * as uncompressed data, which typically includes things like mp3 files 960 * and png images. 961 * 962 * @param id The resource identifier to open, as generated by the appt 963 * tool. 964 * 965 * @return AssetFileDescriptor A new file descriptor you can use to read 966 * the resource. This includes the file descriptor itself, as well as the 967 * offset and length of data where the resource appears in the file. A 968 * null is returned if the file exists but is compressed. 969 * 970 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 971 * 972 */ 973 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 974 synchronized (mTmpValue) { 975 TypedValue value = mTmpValue; 976 getValue(id, value, true); 977 978 try { 979 return mAssets.openNonAssetFd( 980 value.assetCookie, value.string.toString()); 981 } catch (Exception e) { 982 NotFoundException rnf = new NotFoundException( 983 "File " + value.string.toString() 984 + " from drawable resource ID #0x" 985 + Integer.toHexString(id)); 986 rnf.initCause(e); 987 throw rnf; 988 } 989 990 } 991 } 992 993 /** 994 * Return the raw data associated with a particular resource ID. 995 * 996 * @param id The desired resource identifier, as generated by the aapt 997 * tool. This integer encodes the package, type, and resource 998 * entry. The value 0 is an invalid identifier. 999 * @param outValue Object in which to place the resource data. 1000 * @param resolveRefs If true, a resource that is a reference to another 1001 * resource will be followed so that you receive the 1002 * actual final resource data. If false, the TypedValue 1003 * will be filled in with the reference itself. 1004 * 1005 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1006 * 1007 */ 1008 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1009 throws NotFoundException { 1010 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1011 if (found) { 1012 return; 1013 } 1014 throw new NotFoundException("Resource ID #0x" 1015 + Integer.toHexString(id)); 1016 } 1017 1018 /** 1019 * Get the raw value associated with a resource with associated density. 1020 * 1021 * @param id resource identifier 1022 * @param density density in DPI 1023 * @param resolveRefs If true, a resource that is a reference to another 1024 * resource will be followed so that you receive the actual final 1025 * resource data. If false, the TypedValue will be filled in with 1026 * the reference itself. 1027 * @throws NotFoundException Throws NotFoundException if the given ID does 1028 * not exist. 1029 * @see #getValue(String, TypedValue, boolean) 1030 */ 1031 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1032 throws NotFoundException { 1033 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1034 if (found) { 1035 return; 1036 } 1037 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1038 } 1039 1040 /** 1041 * Return the raw data associated with a particular resource ID. 1042 * See getIdentifier() for information on how names are mapped to resource 1043 * IDs, and getString(int) for information on how string resources are 1044 * retrieved. 1045 * 1046 * <p>Note: use of this function is discouraged. It is much more 1047 * efficient to retrieve resources by identifier than by name. 1048 * 1049 * @param name The name of the desired resource. This is passed to 1050 * getIdentifier() with a default type of "string". 1051 * @param outValue Object in which to place the resource data. 1052 * @param resolveRefs If true, a resource that is a reference to another 1053 * resource will be followed so that you receive the 1054 * actual final resource data. If false, the TypedValue 1055 * will be filled in with the reference itself. 1056 * 1057 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1058 * 1059 */ 1060 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1061 throws NotFoundException { 1062 int id = getIdentifier(name, "string", null); 1063 if (id != 0) { 1064 getValue(id, outValue, resolveRefs); 1065 return; 1066 } 1067 throw new NotFoundException("String resource name " + name); 1068 } 1069 1070 /** 1071 * This class holds the current attribute values for a particular theme. 1072 * In other words, a Theme is a set of values for resource attributes; 1073 * these are used in conjunction with {@link TypedArray} 1074 * to resolve the final value for an attribute. 1075 * 1076 * <p>The Theme's attributes come into play in two ways: (1) a styled 1077 * attribute can explicit reference a value in the theme through the 1078 * "?themeAttribute" syntax; (2) if no value has been defined for a 1079 * particular styled attribute, as a last resort we will try to find that 1080 * attribute's value in the Theme. 1081 * 1082 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1083 * retrieve XML attributes with style and theme information applied. 1084 */ 1085 public final class Theme { 1086 /** 1087 * Place new attribute values into the theme. The style resource 1088 * specified by <var>resid</var> will be retrieved from this Theme's 1089 * resources, its values placed into the Theme object. 1090 * 1091 * <p>The semantics of this function depends on the <var>force</var> 1092 * argument: If false, only values that are not already defined in 1093 * the theme will be copied from the system resource; otherwise, if 1094 * any of the style's attributes are already defined in the theme, the 1095 * current values in the theme will be overwritten. 1096 * 1097 * @param resid The resource ID of a style resource from which to 1098 * obtain attribute values. 1099 * @param force If true, values in the style resource will always be 1100 * used in the theme; otherwise, they will only be used 1101 * if not already defined in the theme. 1102 */ 1103 public void applyStyle(int resid, boolean force) { 1104 AssetManager.applyThemeStyle(mTheme, resid, force); 1105 } 1106 1107 /** 1108 * Set this theme to hold the same contents as the theme 1109 * <var>other</var>. If both of these themes are from the same 1110 * Resources object, they will be identical after this function 1111 * returns. If they are from different Resources, only the resources 1112 * they have in common will be set in this theme. 1113 * 1114 * @param other The existing Theme to copy from. 1115 */ 1116 public void setTo(Theme other) { 1117 AssetManager.copyTheme(mTheme, other.mTheme); 1118 } 1119 1120 /** 1121 * Return a StyledAttributes holding the values defined by 1122 * <var>Theme</var> which are listed in <var>attrs</var>. 1123 * 1124 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1125 * with the array. 1126 * 1127 * @param attrs The desired attributes. 1128 * 1129 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1130 * 1131 * @return Returns a TypedArray holding an array of the attribute values. 1132 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1133 * when done with it. 1134 * 1135 * @see Resources#obtainAttributes 1136 * @see #obtainStyledAttributes(int, int[]) 1137 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1138 */ 1139 public TypedArray obtainStyledAttributes(int[] attrs) { 1140 int len = attrs.length; 1141 TypedArray array = getCachedStyledAttributes(len); 1142 array.mRsrcs = attrs; 1143 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1144 array.mData, array.mIndices); 1145 return array; 1146 } 1147 1148 /** 1149 * Return a StyledAttributes holding the values defined by the style 1150 * resource <var>resid</var> which are listed in <var>attrs</var>. 1151 * 1152 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1153 * with the array. 1154 * 1155 * @param resid The desired style resource. 1156 * @param attrs The desired attributes in the style. 1157 * 1158 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1159 * 1160 * @return Returns a TypedArray holding an array of the attribute values. 1161 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1162 * when done with it. 1163 * 1164 * @see Resources#obtainAttributes 1165 * @see #obtainStyledAttributes(int[]) 1166 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1167 */ 1168 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1169 throws NotFoundException { 1170 int len = attrs.length; 1171 TypedArray array = getCachedStyledAttributes(len); 1172 array.mRsrcs = attrs; 1173 1174 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1175 array.mData, array.mIndices); 1176 if (false) { 1177 int[] data = array.mData; 1178 1179 System.out.println("**********************************************************"); 1180 System.out.println("**********************************************************"); 1181 System.out.println("**********************************************************"); 1182 System.out.println("Attributes:"); 1183 String s = " Attrs:"; 1184 int i; 1185 for (i=0; i<attrs.length; i++) { 1186 s = s + " 0x" + Integer.toHexString(attrs[i]); 1187 } 1188 System.out.println(s); 1189 s = " Found:"; 1190 TypedValue value = new TypedValue(); 1191 for (i=0; i<attrs.length; i++) { 1192 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1193 value.type = data[d+AssetManager.STYLE_TYPE]; 1194 value.data = data[d+AssetManager.STYLE_DATA]; 1195 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1196 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1197 s = s + " 0x" + Integer.toHexString(attrs[i]) 1198 + "=" + value; 1199 } 1200 System.out.println(s); 1201 } 1202 return array; 1203 } 1204 1205 /** 1206 * Return a StyledAttributes holding the attribute values in 1207 * <var>set</var> 1208 * that are listed in <var>attrs</var>. In addition, if the given 1209 * AttributeSet specifies a style class (through the "style" attribute), 1210 * that style will be applied on top of the base attributes it defines. 1211 * 1212 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1213 * with the array. 1214 * 1215 * <p>When determining the final value of a particular attribute, there 1216 * are four inputs that come into play:</p> 1217 * 1218 * <ol> 1219 * <li> Any attribute values in the given AttributeSet. 1220 * <li> The style resource specified in the AttributeSet (named 1221 * "style"). 1222 * <li> The default style specified by <var>defStyleAttr</var> and 1223 * <var>defStyleRes</var> 1224 * <li> The base values in this theme. 1225 * </ol> 1226 * 1227 * <p>Each of these inputs is considered in-order, with the first listed 1228 * taking precedence over the following ones. In other words, if in the 1229 * AttributeSet you have supplied <code><Button 1230 * textColor="#ff000000"></code>, then the button's text will 1231 * <em>always</em> be black, regardless of what is specified in any of 1232 * the styles. 1233 * 1234 * @param set The base set of attribute values. May be null. 1235 * @param attrs The desired attributes to be retrieved. 1236 * @param defStyleAttr An attribute in the current theme that contains a 1237 * reference to a style resource that supplies 1238 * defaults values for the StyledAttributes. Can be 1239 * 0 to not look for defaults. 1240 * @param defStyleRes A resource identifier of a style resource that 1241 * supplies default values for the StyledAttributes, 1242 * used only if defStyleAttr is 0 or can not be found 1243 * in the theme. Can be 0 to not look for defaults. 1244 * 1245 * @return Returns a TypedArray holding an array of the attribute values. 1246 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1247 * when done with it. 1248 * 1249 * @see Resources#obtainAttributes 1250 * @see #obtainStyledAttributes(int[]) 1251 * @see #obtainStyledAttributes(int, int[]) 1252 */ 1253 public TypedArray obtainStyledAttributes(AttributeSet set, 1254 int[] attrs, int defStyleAttr, int defStyleRes) { 1255 int len = attrs.length; 1256 TypedArray array = getCachedStyledAttributes(len); 1257 1258 // XXX note that for now we only work with compiled XML files. 1259 // To support generic XML files we will need to manually parse 1260 // out the attributes from the XML file (applying type information 1261 // contained in the resources and such). 1262 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1263 AssetManager.applyStyle( 1264 mTheme, defStyleAttr, defStyleRes, 1265 parser != null ? parser.mParseState : 0, attrs, 1266 array.mData, array.mIndices); 1267 1268 array.mRsrcs = attrs; 1269 array.mXml = parser; 1270 1271 if (false) { 1272 int[] data = array.mData; 1273 1274 System.out.println("Attributes:"); 1275 String s = " Attrs:"; 1276 int i; 1277 for (i=0; i<set.getAttributeCount(); i++) { 1278 s = s + " " + set.getAttributeName(i); 1279 int id = set.getAttributeNameResource(i); 1280 if (id != 0) { 1281 s = s + "(0x" + Integer.toHexString(id) + ")"; 1282 } 1283 s = s + "=" + set.getAttributeValue(i); 1284 } 1285 System.out.println(s); 1286 s = " Found:"; 1287 TypedValue value = new TypedValue(); 1288 for (i=0; i<attrs.length; i++) { 1289 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1290 value.type = data[d+AssetManager.STYLE_TYPE]; 1291 value.data = data[d+AssetManager.STYLE_DATA]; 1292 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1293 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1294 s = s + " 0x" + Integer.toHexString(attrs[i]) 1295 + "=" + value; 1296 } 1297 System.out.println(s); 1298 } 1299 1300 return array; 1301 } 1302 1303 /** 1304 * Retrieve the value of an attribute in the Theme. The contents of 1305 * <var>outValue</var> are ultimately filled in by 1306 * {@link Resources#getValue}. 1307 * 1308 * @param resid The resource identifier of the desired theme 1309 * attribute. 1310 * @param outValue Filled in with the ultimate resource value supplied 1311 * by the attribute. 1312 * @param resolveRefs If true, resource references will be walked; if 1313 * false, <var>outValue</var> may be a 1314 * TYPE_REFERENCE. In either case, it will never 1315 * be a TYPE_ATTRIBUTE. 1316 * 1317 * @return boolean Returns true if the attribute was found and 1318 * <var>outValue</var> is valid, else false. 1319 */ 1320 public boolean resolveAttribute(int resid, TypedValue outValue, 1321 boolean resolveRefs) { 1322 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1323 if (false) { 1324 System.out.println( 1325 "resolveAttribute #" + Integer.toHexString(resid) 1326 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1327 + ", data=0x" + Integer.toHexString(outValue.data)); 1328 } 1329 return got; 1330 } 1331 1332 /** 1333 * Print contents of this theme out to the log. For debugging only. 1334 * 1335 * @param priority The log priority to use. 1336 * @param tag The log tag to use. 1337 * @param prefix Text to prefix each line printed. 1338 */ 1339 public void dump(int priority, String tag, String prefix) { 1340 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1341 } 1342 1343 protected void finalize() throws Throwable { 1344 super.finalize(); 1345 mAssets.releaseTheme(mTheme); 1346 } 1347 1348 /*package*/ Theme() { 1349 mAssets = Resources.this.mAssets; 1350 mTheme = mAssets.createTheme(); 1351 } 1352 1353 private final AssetManager mAssets; 1354 private final int mTheme; 1355 } 1356 1357 /** 1358 * Generate a new Theme object for this set of Resources. It initially 1359 * starts out empty. 1360 * 1361 * @return Theme The newly created Theme container. 1362 */ 1363 public final Theme newTheme() { 1364 return new Theme(); 1365 } 1366 1367 /** 1368 * Retrieve a set of basic attribute values from an AttributeSet, not 1369 * performing styling of them using a theme and/or style resources. 1370 * 1371 * @param set The current attribute values to retrieve. 1372 * @param attrs The specific attributes to be retrieved. 1373 * @return Returns a TypedArray holding an array of the attribute values. 1374 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1375 * when done with it. 1376 * 1377 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1378 */ 1379 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1380 int len = attrs.length; 1381 TypedArray array = getCachedStyledAttributes(len); 1382 1383 // XXX note that for now we only work with compiled XML files. 1384 // To support generic XML files we will need to manually parse 1385 // out the attributes from the XML file (applying type information 1386 // contained in the resources and such). 1387 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1388 mAssets.retrieveAttributes(parser.mParseState, attrs, 1389 array.mData, array.mIndices); 1390 1391 array.mRsrcs = attrs; 1392 array.mXml = parser; 1393 1394 return array; 1395 } 1396 1397 /** 1398 * Store the newly updated configuration. 1399 */ 1400 public void updateConfiguration(Configuration config, 1401 DisplayMetrics metrics) { 1402 updateConfiguration(config, metrics, null); 1403 } 1404 1405 /** 1406 * @hide 1407 */ 1408 public void updateConfiguration(Configuration config, 1409 DisplayMetrics metrics, CompatibilityInfo compat) { 1410 synchronized (mTmpValue) { 1411 if (false) { 1412 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1413 + mConfiguration + " old compat is " + mCompatibilityInfo); 1414 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1415 + config + " new compat is " + compat); 1416 } 1417 if (compat != null) { 1418 mCompatibilityInfo = compat; 1419 } 1420 if (metrics != null) { 1421 mMetrics.setTo(metrics); 1422 } 1423 // NOTE: We should re-arrange this code to create a Display 1424 // with the CompatibilityInfo that is used everywhere we deal 1425 // with the display in relation to this app, rather than 1426 // doing the conversion here. This impl should be okay because 1427 // we make sure to return a compatible display in the places 1428 // where there are public APIs to retrieve the display... but 1429 // it would be cleaner and more maintainble to just be 1430 // consistently dealing with a compatible display everywhere in 1431 // the framework. 1432 if (mCompatibilityInfo != null) { 1433 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1434 } 1435 int configChanges = 0xfffffff; 1436 if (config != null) { 1437 mTmpConfig.setTo(config); 1438 int density = config.densityDpi; 1439 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1440 density = mMetrics.noncompatDensityDpi; 1441 } 1442 if (mCompatibilityInfo != null) { 1443 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1444 } 1445 if (mTmpConfig.locale == null) { 1446 mTmpConfig.locale = Locale.getDefault(); 1447 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1448 } 1449 configChanges = mConfiguration.updateFrom(mTmpConfig); 1450 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1451 } 1452 if (mConfiguration.locale == null) { 1453 mConfiguration.locale = Locale.getDefault(); 1454 mConfiguration.setLayoutDirection(mConfiguration.locale); 1455 } 1456 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1457 mMetrics.densityDpi = mConfiguration.densityDpi; 1458 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1459 } 1460 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1461 1462 String locale = null; 1463 if (mConfiguration.locale != null) { 1464 locale = mConfiguration.locale.getLanguage(); 1465 if (mConfiguration.locale.getCountry() != null) { 1466 locale += "-" + mConfiguration.locale.getCountry(); 1467 } 1468 } 1469 int width, height; 1470 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1471 width = mMetrics.widthPixels; 1472 height = mMetrics.heightPixels; 1473 } else { 1474 //noinspection SuspiciousNameCombination 1475 width = mMetrics.heightPixels; 1476 //noinspection SuspiciousNameCombination 1477 height = mMetrics.widthPixels; 1478 } 1479 int keyboardHidden = mConfiguration.keyboardHidden; 1480 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1481 && mConfiguration.hardKeyboardHidden 1482 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1483 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1484 } 1485 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1486 locale, mConfiguration.orientation, 1487 mConfiguration.touchscreen, 1488 mConfiguration.densityDpi, mConfiguration.keyboard, 1489 keyboardHidden, mConfiguration.navigation, width, height, 1490 mConfiguration.smallestScreenWidthDp, 1491 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1492 mConfiguration.screenLayout, mConfiguration.uiMode, 1493 Build.VERSION.RESOURCES_SDK_INT); 1494 1495 if (DEBUG_CONFIG) { 1496 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1497 + " final compat is " + mCompatibilityInfo); 1498 } 1499 1500 clearDrawableCache(mDrawableCache, configChanges); 1501 clearDrawableCache(mColorDrawableCache, configChanges); 1502 1503 mColorStateListCache.clear(); 1504 1505 flushLayoutCache(); 1506 } 1507 synchronized (mSync) { 1508 if (mPluralRule != null) { 1509 mPluralRule = NativePluralRules.forLocale(config.locale); 1510 } 1511 } 1512 } 1513 1514 private void clearDrawableCache( 1515 LongSparseArray<WeakReference<ConstantState>> cache, 1516 int configChanges) { 1517 int N = cache.size(); 1518 if (DEBUG_CONFIG) { 1519 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1520 + Integer.toHexString(configChanges)); 1521 } 1522 for (int i=0; i<N; i++) { 1523 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1524 if (ref != null) { 1525 Drawable.ConstantState cs = ref.get(); 1526 if (cs != null) { 1527 if (Configuration.needNewResources( 1528 configChanges, cs.getChangingConfigurations())) { 1529 if (DEBUG_CONFIG) { 1530 Log.d(TAG, "FLUSHING #0x" 1531 + Long.toHexString(mDrawableCache.keyAt(i)) 1532 + " / " + cs + " with changes: 0x" 1533 + Integer.toHexString(cs.getChangingConfigurations())); 1534 } 1535 cache.setValueAt(i, null); 1536 } else if (DEBUG_CONFIG) { 1537 Log.d(TAG, "(Keeping #0x" 1538 + Long.toHexString(cache.keyAt(i)) 1539 + " / " + cs + " with changes: 0x" 1540 + Integer.toHexString(cs.getChangingConfigurations()) 1541 + ")"); 1542 } 1543 } 1544 } 1545 } 1546 } 1547 1548 /** 1549 * Update the system resources configuration if they have previously 1550 * been initialized. 1551 * 1552 * @hide 1553 */ 1554 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1555 CompatibilityInfo compat) { 1556 if (mSystem != null) { 1557 mSystem.updateConfiguration(config, metrics, compat); 1558 //Log.i(TAG, "Updated system resources " + mSystem 1559 // + ": " + mSystem.getConfiguration()); 1560 } 1561 } 1562 1563 /** 1564 * @hide 1565 */ 1566 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1567 updateSystemConfiguration(config, metrics, null); 1568 } 1569 1570 /** 1571 * Return the current display metrics that are in effect for this resource 1572 * object. The returned object should be treated as read-only. 1573 * 1574 * @return The resource's current display metrics. 1575 */ 1576 public DisplayMetrics getDisplayMetrics() { 1577 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1578 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1579 return mMetrics; 1580 } 1581 1582 /** 1583 * Return the current configuration that is in effect for this resource 1584 * object. The returned object should be treated as read-only. 1585 * 1586 * @return The resource's current configuration. 1587 */ 1588 public Configuration getConfiguration() { 1589 return mConfiguration; 1590 } 1591 1592 /** 1593 * Return the compatibility mode information for the application. 1594 * The returned object should be treated as read-only. 1595 * 1596 * @return compatibility info. 1597 * @hide 1598 */ 1599 public CompatibilityInfo getCompatibilityInfo() { 1600 return mCompatibilityInfo != null ? mCompatibilityInfo 1601 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1602 } 1603 1604 /** 1605 * This is just for testing. 1606 * @hide 1607 */ 1608 public void setCompatibilityInfo(CompatibilityInfo ci) { 1609 mCompatibilityInfo = ci; 1610 updateConfiguration(mConfiguration, mMetrics); 1611 } 1612 1613 /** 1614 * Return a resource identifier for the given resource name. A fully 1615 * qualified resource name is of the form "package:type/entry". The first 1616 * two components (package and type) are optional if defType and 1617 * defPackage, respectively, are specified here. 1618 * 1619 * <p>Note: use of this function is discouraged. It is much more 1620 * efficient to retrieve resources by identifier than by name. 1621 * 1622 * @param name The name of the desired resource. 1623 * @param defType Optional default resource type to find, if "type/" is 1624 * not included in the name. Can be null to require an 1625 * explicit type. 1626 * @param defPackage Optional default package to find, if "package:" is 1627 * not included in the name. Can be null to require an 1628 * explicit package. 1629 * 1630 * @return int The associated resource identifier. Returns 0 if no such 1631 * resource was found. (0 is not a valid resource ID.) 1632 */ 1633 public int getIdentifier(String name, String defType, String defPackage) { 1634 try { 1635 return Integer.parseInt(name); 1636 } catch (Exception e) { 1637 // Ignore 1638 } 1639 return mAssets.getResourceIdentifier(name, defType, defPackage); 1640 } 1641 1642 /** 1643 * Return the full name for a given resource identifier. This name is 1644 * a single string of the form "package:type/entry". 1645 * 1646 * @param resid The resource identifier whose name is to be retrieved. 1647 * 1648 * @return A string holding the name of the resource. 1649 * 1650 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1651 * 1652 * @see #getResourcePackageName 1653 * @see #getResourceTypeName 1654 * @see #getResourceEntryName 1655 */ 1656 public String getResourceName(int resid) throws NotFoundException { 1657 String str = mAssets.getResourceName(resid); 1658 if (str != null) return str; 1659 throw new NotFoundException("Unable to find resource ID #0x" 1660 + Integer.toHexString(resid)); 1661 } 1662 1663 /** 1664 * Return the package name for a given resource identifier. 1665 * 1666 * @param resid The resource identifier whose package name is to be 1667 * retrieved. 1668 * 1669 * @return A string holding the package name of the resource. 1670 * 1671 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1672 * 1673 * @see #getResourceName 1674 */ 1675 public String getResourcePackageName(int resid) throws NotFoundException { 1676 String str = mAssets.getResourcePackageName(resid); 1677 if (str != null) return str; 1678 throw new NotFoundException("Unable to find resource ID #0x" 1679 + Integer.toHexString(resid)); 1680 } 1681 1682 /** 1683 * Return the type name for a given resource identifier. 1684 * 1685 * @param resid The resource identifier whose type name is to be 1686 * retrieved. 1687 * 1688 * @return A string holding the type name of the resource. 1689 * 1690 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1691 * 1692 * @see #getResourceName 1693 */ 1694 public String getResourceTypeName(int resid) throws NotFoundException { 1695 String str = mAssets.getResourceTypeName(resid); 1696 if (str != null) return str; 1697 throw new NotFoundException("Unable to find resource ID #0x" 1698 + Integer.toHexString(resid)); 1699 } 1700 1701 /** 1702 * Return the entry name for a given resource identifier. 1703 * 1704 * @param resid The resource identifier whose entry name is to be 1705 * retrieved. 1706 * 1707 * @return A string holding the entry name of the resource. 1708 * 1709 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1710 * 1711 * @see #getResourceName 1712 */ 1713 public String getResourceEntryName(int resid) throws NotFoundException { 1714 String str = mAssets.getResourceEntryName(resid); 1715 if (str != null) return str; 1716 throw new NotFoundException("Unable to find resource ID #0x" 1717 + Integer.toHexString(resid)); 1718 } 1719 1720 /** 1721 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1722 * an XML file. You call this when you are at the parent tag of the 1723 * extra tags, and it will return once all of the child tags have been parsed. 1724 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1725 * 1726 * @param parser The parser from which to retrieve the extras. 1727 * @param outBundle A Bundle in which to place all parsed extras. 1728 * @throws XmlPullParserException 1729 * @throws IOException 1730 */ 1731 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1732 throws XmlPullParserException, IOException { 1733 int outerDepth = parser.getDepth(); 1734 int type; 1735 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1736 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1737 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1738 continue; 1739 } 1740 1741 String nodeName = parser.getName(); 1742 if (nodeName.equals("extra")) { 1743 parseBundleExtra("extra", parser, outBundle); 1744 XmlUtils.skipCurrentTag(parser); 1745 1746 } else { 1747 XmlUtils.skipCurrentTag(parser); 1748 } 1749 } 1750 } 1751 1752 /** 1753 * Parse a name/value pair out of an XML tag holding that data. The 1754 * AttributeSet must be holding the data defined by 1755 * {@link android.R.styleable#Extra}. The following value types are supported: 1756 * <ul> 1757 * <li> {@link TypedValue#TYPE_STRING}: 1758 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1759 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1760 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1761 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1762 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1763 * <li> {@link TypedValue#TYPE_FLOAT}: 1764 * {@link Bundle#putCharSequence Bundle.putFloat()} 1765 * </ul> 1766 * 1767 * @param tagName The name of the tag these attributes come from; this is 1768 * only used for reporting error messages. 1769 * @param attrs The attributes from which to retrieve the name/value pair. 1770 * @param outBundle The Bundle in which to place the parsed value. 1771 * @throws XmlPullParserException If the attributes are not valid. 1772 */ 1773 public void parseBundleExtra(String tagName, AttributeSet attrs, 1774 Bundle outBundle) throws XmlPullParserException { 1775 TypedArray sa = obtainAttributes(attrs, 1776 com.android.internal.R.styleable.Extra); 1777 1778 String name = sa.getString( 1779 com.android.internal.R.styleable.Extra_name); 1780 if (name == null) { 1781 sa.recycle(); 1782 throw new XmlPullParserException("<" + tagName 1783 + "> requires an android:name attribute at " 1784 + attrs.getPositionDescription()); 1785 } 1786 1787 TypedValue v = sa.peekValue( 1788 com.android.internal.R.styleable.Extra_value); 1789 if (v != null) { 1790 if (v.type == TypedValue.TYPE_STRING) { 1791 CharSequence cs = v.coerceToString(); 1792 outBundle.putCharSequence(name, cs); 1793 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1794 outBundle.putBoolean(name, v.data != 0); 1795 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1796 && v.type <= TypedValue.TYPE_LAST_INT) { 1797 outBundle.putInt(name, v.data); 1798 } else if (v.type == TypedValue.TYPE_FLOAT) { 1799 outBundle.putFloat(name, v.getFloat()); 1800 } else { 1801 sa.recycle(); 1802 throw new XmlPullParserException("<" + tagName 1803 + "> only supports string, integer, float, color, and boolean at " 1804 + attrs.getPositionDescription()); 1805 } 1806 } else { 1807 sa.recycle(); 1808 throw new XmlPullParserException("<" + tagName 1809 + "> requires an android:value or android:resource attribute at " 1810 + attrs.getPositionDescription()); 1811 } 1812 1813 sa.recycle(); 1814 } 1815 1816 /** 1817 * Retrieve underlying AssetManager storage for these resources. 1818 */ 1819 public final AssetManager getAssets() { 1820 return mAssets; 1821 } 1822 1823 /** 1824 * Call this to remove all cached loaded layout resources from the 1825 * Resources object. Only intended for use with performance testing 1826 * tools. 1827 */ 1828 public final void flushLayoutCache() { 1829 synchronized (mCachedXmlBlockIds) { 1830 // First see if this block is in our cache. 1831 final int num = mCachedXmlBlockIds.length; 1832 for (int i=0; i<num; i++) { 1833 mCachedXmlBlockIds[i] = -0; 1834 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1835 if (oldBlock != null) { 1836 oldBlock.close(); 1837 } 1838 mCachedXmlBlocks[i] = null; 1839 } 1840 } 1841 } 1842 1843 /** 1844 * Start preloading of resource data using this Resources object. Only 1845 * for use by the zygote process for loading common system resources. 1846 * {@hide} 1847 */ 1848 public final void startPreloading() { 1849 synchronized (mSync) { 1850 if (sPreloaded) { 1851 throw new IllegalStateException("Resources already preloaded"); 1852 } 1853 sPreloaded = true; 1854 mPreloading = true; 1855 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 1856 mConfiguration.densityDpi = sPreloadedDensity; 1857 updateConfiguration(null, null); 1858 } 1859 } 1860 1861 /** 1862 * Called by zygote when it is done preloading resources, to change back 1863 * to normal Resources operation. 1864 */ 1865 public final void finishPreloading() { 1866 if (mPreloading) { 1867 mPreloading = false; 1868 flushLayoutCache(); 1869 } 1870 } 1871 1872 private boolean verifyPreloadConfig(TypedValue value, String name) { 1873 if ((value.changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE 1874 | ActivityInfo.CONFIG_DENSITY)) != 0) { 1875 String resName; 1876 try { 1877 resName = getResourceName(value.resourceId); 1878 } catch (NotFoundException e) { 1879 resName = "?"; 1880 } 1881 Log.w(TAG, "Preloaded " + name + " resource #0x" 1882 + Integer.toHexString(value.resourceId) 1883 + " (" + resName + ") that varies with configuration!!"); 1884 return false; 1885 } 1886 return true; 1887 } 1888 1889 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1890 throws NotFoundException { 1891 1892 if (TRACE_FOR_PRELOAD) { 1893 // Log only framework resources 1894 if ((id >>> 24) == 0x1) { 1895 final String name = getResourceName(id); 1896 if (name != null) android.util.Log.d("PreloadDrawable", name); 1897 } 1898 } 1899 1900 boolean isColorDrawable = false; 1901 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1902 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1903 isColorDrawable = true; 1904 } 1905 final long key = isColorDrawable ? value.data : 1906 (((long) value.assetCookie) << 32) | value.data; 1907 1908 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1909 1910 if (dr != null) { 1911 return dr; 1912 } 1913 1914 Drawable.ConstantState cs = isColorDrawable 1915 ? sPreloadedColorDrawables.get(key) 1916 : (sPreloadedDensity == mConfiguration.densityDpi 1917 ? sPreloadedDrawables.get(key) : null); 1918 if (cs != null) { 1919 dr = cs.newDrawable(this); 1920 } else { 1921 if (isColorDrawable) { 1922 dr = new ColorDrawable(value.data); 1923 } 1924 1925 if (dr == null) { 1926 if (value.string == null) { 1927 throw new NotFoundException( 1928 "Resource is not a Drawable (color or path): " + value); 1929 } 1930 1931 String file = value.string.toString(); 1932 1933 if (TRACE_FOR_MISS_PRELOAD) { 1934 // Log only framework resources 1935 if ((id >>> 24) == 0x1) { 1936 final String name = getResourceName(id); 1937 if (name != null) android.util.Log.d(TAG, "Loading framework drawable #" 1938 + Integer.toHexString(id) + ": " + name 1939 + " at " + file); 1940 } 1941 } 1942 1943 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1944 + value.assetCookie + ": " + file); 1945 1946 if (file.endsWith(".xml")) { 1947 try { 1948 XmlResourceParser rp = loadXmlResourceParser( 1949 file, id, value.assetCookie, "drawable"); 1950 dr = Drawable.createFromXml(this, rp); 1951 rp.close(); 1952 } catch (Exception e) { 1953 NotFoundException rnf = new NotFoundException( 1954 "File " + file + " from drawable resource ID #0x" 1955 + Integer.toHexString(id)); 1956 rnf.initCause(e); 1957 throw rnf; 1958 } 1959 1960 } else { 1961 try { 1962 InputStream is = mAssets.openNonAsset( 1963 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1964 // System.out.println("Opened file " + file + ": " + is); 1965 dr = Drawable.createFromResourceStream(this, value, is, 1966 file, null); 1967 is.close(); 1968 // System.out.println("Created stream: " + dr); 1969 } catch (Exception e) { 1970 NotFoundException rnf = new NotFoundException( 1971 "File " + file + " from drawable resource ID #0x" 1972 + Integer.toHexString(id)); 1973 rnf.initCause(e); 1974 throw rnf; 1975 } 1976 } 1977 } 1978 } 1979 1980 if (dr != null) { 1981 dr.setChangingConfigurations(value.changingConfigurations); 1982 cs = dr.getConstantState(); 1983 if (cs != null) { 1984 if (mPreloading) { 1985 if (verifyPreloadConfig(value, "drawable")) { 1986 if (isColorDrawable) { 1987 sPreloadedColorDrawables.put(key, cs); 1988 } else { 1989 sPreloadedDrawables.put(key, cs); 1990 } 1991 } 1992 } else { 1993 synchronized (mTmpValue) { 1994 //Log.i(TAG, "Saving cached drawable @ #" + 1995 // Integer.toHexString(key.intValue()) 1996 // + " in " + this + ": " + cs); 1997 if (isColorDrawable) { 1998 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1999 } else { 2000 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 2001 } 2002 } 2003 } 2004 } 2005 } 2006 2007 return dr; 2008 } 2009 2010 private Drawable getCachedDrawable( 2011 LongSparseArray<WeakReference<ConstantState>> drawableCache, 2012 long key) { 2013 synchronized (mTmpValue) { 2014 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 2015 if (wr != null) { // we have the key 2016 Drawable.ConstantState entry = wr.get(); 2017 if (entry != null) { 2018 //Log.i(TAG, "Returning cached drawable @ #" + 2019 // Integer.toHexString(((Integer)key).intValue()) 2020 // + " in " + this + ": " + entry); 2021 return entry.newDrawable(this); 2022 } 2023 else { // our entry has been purged 2024 drawableCache.delete(key); 2025 } 2026 } 2027 } 2028 return null; 2029 } 2030 2031 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 2032 throws NotFoundException { 2033 if (TRACE_FOR_PRELOAD) { 2034 // Log only framework resources 2035 if ((id >>> 24) == 0x1) { 2036 final String name = getResourceName(id); 2037 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2038 } 2039 } 2040 2041 final long key = (((long) value.assetCookie) << 32) | value.data; 2042 2043 ColorStateList csl; 2044 2045 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2046 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2047 2048 csl = sPreloadedColorStateLists.get(key); 2049 if (csl != null) { 2050 return csl; 2051 } 2052 2053 csl = ColorStateList.valueOf(value.data); 2054 if (mPreloading) { 2055 if (verifyPreloadConfig(value, "color")) { 2056 sPreloadedColorStateLists.put(key, csl); 2057 } 2058 } 2059 2060 return csl; 2061 } 2062 2063 csl = getCachedColorStateList(key); 2064 if (csl != null) { 2065 return csl; 2066 } 2067 2068 csl = sPreloadedColorStateLists.get(key); 2069 if (csl != null) { 2070 return csl; 2071 } 2072 2073 if (value.string == null) { 2074 throw new NotFoundException( 2075 "Resource is not a ColorStateList (color or path): " + value); 2076 } 2077 2078 String file = value.string.toString(); 2079 2080 if (file.endsWith(".xml")) { 2081 try { 2082 XmlResourceParser rp = loadXmlResourceParser( 2083 file, id, value.assetCookie, "colorstatelist"); 2084 csl = ColorStateList.createFromXml(this, rp); 2085 rp.close(); 2086 } catch (Exception e) { 2087 NotFoundException rnf = new NotFoundException( 2088 "File " + file + " from color state list resource ID #0x" 2089 + Integer.toHexString(id)); 2090 rnf.initCause(e); 2091 throw rnf; 2092 } 2093 } else { 2094 throw new NotFoundException( 2095 "File " + file + " from drawable resource ID #0x" 2096 + Integer.toHexString(id) + ": .xml extension required"); 2097 } 2098 2099 if (csl != null) { 2100 if (mPreloading) { 2101 if (verifyPreloadConfig(value, "color")) { 2102 sPreloadedColorStateLists.put(key, csl); 2103 } 2104 } else { 2105 synchronized (mTmpValue) { 2106 //Log.i(TAG, "Saving cached color state list @ #" + 2107 // Integer.toHexString(key.intValue()) 2108 // + " in " + this + ": " + csl); 2109 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2110 } 2111 } 2112 } 2113 2114 return csl; 2115 } 2116 2117 private ColorStateList getCachedColorStateList(long key) { 2118 synchronized (mTmpValue) { 2119 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2120 if (wr != null) { // we have the key 2121 ColorStateList entry = wr.get(); 2122 if (entry != null) { 2123 //Log.i(TAG, "Returning cached color state list @ #" + 2124 // Integer.toHexString(((Integer)key).intValue()) 2125 // + " in " + this + ": " + entry); 2126 return entry; 2127 } else { // our entry has been purged 2128 mColorStateListCache.delete(key); 2129 } 2130 } 2131 } 2132 return null; 2133 } 2134 2135 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2136 throws NotFoundException { 2137 synchronized (mTmpValue) { 2138 TypedValue value = mTmpValue; 2139 getValue(id, value, true); 2140 if (value.type == TypedValue.TYPE_STRING) { 2141 return loadXmlResourceParser(value.string.toString(), id, 2142 value.assetCookie, type); 2143 } 2144 throw new NotFoundException( 2145 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2146 + Integer.toHexString(value.type) + " is not valid"); 2147 } 2148 } 2149 2150 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2151 int assetCookie, String type) throws NotFoundException { 2152 if (id != 0) { 2153 try { 2154 // These may be compiled... 2155 synchronized (mCachedXmlBlockIds) { 2156 // First see if this block is in our cache. 2157 final int num = mCachedXmlBlockIds.length; 2158 for (int i=0; i<num; i++) { 2159 if (mCachedXmlBlockIds[i] == id) { 2160 //System.out.println("**** REUSING XML BLOCK! id=" 2161 // + id + ", index=" + i); 2162 return mCachedXmlBlocks[i].newParser(); 2163 } 2164 } 2165 2166 // Not in the cache, create a new block and put it at 2167 // the next slot in the cache. 2168 XmlBlock block = mAssets.openXmlBlockAsset( 2169 assetCookie, file); 2170 if (block != null) { 2171 int pos = mLastCachedXmlBlockIndex+1; 2172 if (pos >= num) pos = 0; 2173 mLastCachedXmlBlockIndex = pos; 2174 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2175 if (oldBlock != null) { 2176 oldBlock.close(); 2177 } 2178 mCachedXmlBlockIds[pos] = id; 2179 mCachedXmlBlocks[pos] = block; 2180 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2181 // + id + ", index=" + pos); 2182 return block.newParser(); 2183 } 2184 } 2185 } catch (Exception e) { 2186 NotFoundException rnf = new NotFoundException( 2187 "File " + file + " from xml type " + type + " resource ID #0x" 2188 + Integer.toHexString(id)); 2189 rnf.initCause(e); 2190 throw rnf; 2191 } 2192 } 2193 2194 throw new NotFoundException( 2195 "File " + file + " from xml type " + type + " resource ID #0x" 2196 + Integer.toHexString(id)); 2197 } 2198 2199 private TypedArray getCachedStyledAttributes(int len) { 2200 synchronized (mTmpValue) { 2201 TypedArray attrs = mCachedStyledAttributes; 2202 if (attrs != null) { 2203 mCachedStyledAttributes = null; 2204 if (DEBUG_ATTRIBUTES_CACHE) { 2205 mLastRetrievedAttrs = new RuntimeException("here"); 2206 mLastRetrievedAttrs.fillInStackTrace(); 2207 } 2208 2209 attrs.mLength = len; 2210 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2211 if (attrs.mData.length >= fullLen) { 2212 return attrs; 2213 } 2214 attrs.mData = new int[fullLen]; 2215 attrs.mIndices = new int[1+len]; 2216 return attrs; 2217 } 2218 if (DEBUG_ATTRIBUTES_CACHE) { 2219 RuntimeException here = new RuntimeException("here"); 2220 here.fillInStackTrace(); 2221 if (mLastRetrievedAttrs != null) { 2222 Log.i(TAG, "Allocated new TypedArray of " + len + " in " + this, here); 2223 Log.i(TAG, "Last retrieved attributes here", mLastRetrievedAttrs); 2224 } 2225 mLastRetrievedAttrs = here; 2226 } 2227 return new TypedArray(this, 2228 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2229 new int[1+len], len); 2230 } 2231 } 2232 2233 private Resources() { 2234 mAssets = AssetManager.getSystem(); 2235 // NOTE: Intentionally leaving this uninitialized (all values set 2236 // to zero), so that anyone who tries to do something that requires 2237 // metrics will get a very wrong value. 2238 mConfiguration.setToDefaults(); 2239 mMetrics.setToDefaults(); 2240 updateConfiguration(null, null); 2241 mAssets.ensureStringBlocks(); 2242 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2243 } 2244 } 2245
