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      1 /*
      2  * Copyright (C) 2008 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 import org.xmlpull.v1.XmlSerializer;
     24 
     25 import android.annotation.IntDef;
     26 import android.annotation.NonNull;
     27 import android.annotation.Nullable;
     28 import android.content.pm.ActivityInfo;
     29 import android.content.pm.ActivityInfo.Config;
     30 import android.os.Build;
     31 import android.os.LocaleList;
     32 import android.os.Parcel;
     33 import android.os.Parcelable;
     34 import android.text.TextUtils;
     35 import android.view.View;
     36 
     37 import java.io.IOException;
     38 import java.lang.annotation.Retention;
     39 import java.lang.annotation.RetentionPolicy;
     40 import java.util.ArrayList;
     41 import java.util.Locale;
     42 
     43 /**
     44  * This class describes all device configuration information that can
     45  * impact the resources the application retrieves.  This includes both
     46  * user-specified configuration options (locale list and scaling) as well
     47  * as device configurations (such as input modes, screen size and screen orientation).
     48  * <p>You can acquire this object from {@link Resources}, using {@link
     49  * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request
     50  * with {@link android.app.Activity#getResources}:</p>
     51  * <pre>Configuration config = getResources().getConfiguration();</pre>
     52  */
     53 public final class Configuration implements Parcelable, Comparable<Configuration> {
     54     /** @hide */
     55     public static final Configuration EMPTY = new Configuration();
     56 
     57     /**
     58      * Current user preference for the scaling factor for fonts, relative
     59      * to the base density scaling.
     60      */
     61     public float fontScale;
     62 
     63     /**
     64      * IMSI MCC (Mobile Country Code), corresponding to
     65      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#MccQualifier">mcc</a>
     66      * resource qualifier.  0 if undefined.
     67      */
     68     public int mcc;
     69 
     70     /**
     71      * IMSI MNC (Mobile Network Code), corresponding to
     72      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#MccQualifier">mnc</a>
     73      * resource qualifier.  0 if undefined. Note that the actual MNC may be 0; in order to check
     74      * for this use the {@link #MNC_ZERO} symbol.
     75      */
     76     public int mnc;
     77 
     78     /**
     79      * Constant used to to represent MNC (Mobile Network Code) zero.
     80      * 0 cannot be used, since it is used to represent an undefined MNC.
     81      */
     82     public static final int MNC_ZERO = 0xffff;
     83 
     84     /**
     85      * Current user preference for the locale, corresponding to
     86      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#LocaleQualifier">locale</a>
     87      * resource qualifier.
     88      *
     89      * @deprecated Do not set or read this directly. Use {@link #getLocales()} and
     90      * {@link #setLocales(LocaleList)}. If only the primary locale is needed,
     91      * <code>getLocales().get(0)</code> is now the preferred accessor.
     92      */
     93     @Deprecated public Locale locale;
     94 
     95     private LocaleList mLocaleList;
     96 
     97     /**
     98      * Locale should persist on setting.  This is hidden because it is really
     99      * questionable whether this is the right way to expose the functionality.
    100      * @hide
    101      */
    102     public boolean userSetLocale;
    103 
    104     /** Constant for {@link #screenLayout}: bits that encode the size. */
    105     public static final int SCREENLAYOUT_SIZE_MASK = 0x0f;
    106     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK}
    107      * value indicating that no size has been set. */
    108     public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00;
    109     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK}
    110      * value indicating the screen is at least approximately 320x426 dp units,
    111      * corresponds to the
    112      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">small</a>
    113      * resource qualifier.
    114      * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting
    115      * Multiple Screens</a> for more information. */
    116     public static final int SCREENLAYOUT_SIZE_SMALL = 0x01;
    117     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK}
    118      * value indicating the screen is at least approximately 320x470 dp units,
    119      * corresponds to the
    120      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">normal</a>
    121      * resource qualifier.
    122      * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting
    123      * Multiple Screens</a> for more information. */
    124     public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02;
    125     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK}
    126      * value indicating the screen is at least approximately 480x640 dp units,
    127      * corresponds to the
    128      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">large</a>
    129      * resource qualifier.
    130      * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting
    131      * Multiple Screens</a> for more information. */
    132     public static final int SCREENLAYOUT_SIZE_LARGE = 0x03;
    133     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK}
    134      * value indicating the screen is at least approximately 720x960 dp units,
    135      * corresponds to the
    136      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenSizeQualifier">xlarge</a>
    137      * resource qualifier.
    138      * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting
    139      * Multiple Screens</a> for more information.*/
    140     public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04;
    141 
    142     /** Constant for {@link #screenLayout}: bits that encode the aspect ratio. */
    143     public static final int SCREENLAYOUT_LONG_MASK = 0x30;
    144     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK}
    145      * value indicating that no size has been set. */
    146     public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00;
    147     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK}
    148      * value that corresponds to the
    149      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenAspectQualifier">notlong</a>
    150      * resource qualifier. */
    151     public static final int SCREENLAYOUT_LONG_NO = 0x10;
    152     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LONG_MASK}
    153      * value that corresponds to the
    154      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenAspectQualifier">long</a>
    155      * resource qualifier. */
    156     public static final int SCREENLAYOUT_LONG_YES = 0x20;
    157 
    158     /** Constant for {@link #screenLayout}: bits that encode the layout direction. */
    159     public static final int SCREENLAYOUT_LAYOUTDIR_MASK = 0xC0;
    160     /** Constant for {@link #screenLayout}: bits shift to get the layout direction. */
    161     public static final int SCREENLAYOUT_LAYOUTDIR_SHIFT = 6;
    162     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK}
    163      * value indicating that no layout dir has been set. */
    164     public static final int SCREENLAYOUT_LAYOUTDIR_UNDEFINED = 0x00;
    165     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK}
    166      * value indicating that a layout dir has been set to LTR. */
    167     public static final int SCREENLAYOUT_LAYOUTDIR_LTR = 0x01 << SCREENLAYOUT_LAYOUTDIR_SHIFT;
    168     /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_LAYOUTDIR_MASK}
    169      * value indicating that a layout dir has been set to RTL. */
    170     public static final int SCREENLAYOUT_LAYOUTDIR_RTL = 0x02 << SCREENLAYOUT_LAYOUTDIR_SHIFT;
    171 
    172     /** Constant for {@link #screenLayout}: bits that encode roundness of the screen. */
    173     public static final int SCREENLAYOUT_ROUND_MASK = 0x300;
    174     /** @hide Constant for {@link #screenLayout}: bit shift to get to screen roundness bits */
    175     public static final int SCREENLAYOUT_ROUND_SHIFT = 8;
    176     /**
    177      * Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_ROUND_MASK} value indicating
    178      * that it is unknown whether or not the screen has a round shape.
    179      */
    180     public static final int SCREENLAYOUT_ROUND_UNDEFINED = 0x00;
    181     /**
    182      * Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_ROUND_MASK} value indicating
    183      * that the screen does not have a rounded shape.
    184      */
    185     public static final int SCREENLAYOUT_ROUND_NO = 0x1 << SCREENLAYOUT_ROUND_SHIFT;
    186     /**
    187      * Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_ROUND_MASK} value indicating
    188      * that the screen has a rounded shape. Corners may not be visible to the user;
    189      * developers should pay special attention to the {@link android.view.WindowInsets} delivered
    190      * to views for more information about ensuring content is not obscured.
    191      *
    192      * <p>Corresponds to the <code>-round</code> resource qualifier.</p>
    193      */
    194     public static final int SCREENLAYOUT_ROUND_YES = 0x2 << SCREENLAYOUT_ROUND_SHIFT;
    195 
    196     /** Constant for {@link #screenLayout}: a value indicating that screenLayout is undefined */
    197     public static final int SCREENLAYOUT_UNDEFINED = SCREENLAYOUT_SIZE_UNDEFINED |
    198             SCREENLAYOUT_LONG_UNDEFINED | SCREENLAYOUT_LAYOUTDIR_UNDEFINED |
    199             SCREENLAYOUT_ROUND_UNDEFINED;
    200 
    201     /**
    202      * Special flag we generate to indicate that the screen layout requires
    203      * us to use a compatibility mode for apps that are not modern layout
    204      * aware.
    205      * @hide
    206      */
    207     public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000;
    208 
    209     /**
    210      * Bit mask of overall layout of the screen.  Currently there are four
    211      * fields:
    212      * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size
    213      * of the screen.  They may be one of
    214      * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL},
    215      * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}.</p>
    216      *
    217      * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen
    218      * is wider/taller than normal.  They may be one of
    219      * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}.</p>
    220      *
    221      * <p>The {@link #SCREENLAYOUT_LAYOUTDIR_MASK} defines whether the screen layout
    222      * is either LTR or RTL.  They may be one of
    223      * {@link #SCREENLAYOUT_LAYOUTDIR_LTR} or {@link #SCREENLAYOUT_LAYOUTDIR_RTL}.</p>
    224      *
    225      * <p>The {@link #SCREENLAYOUT_ROUND_MASK} defines whether the screen has a rounded
    226      * shape. They may be one of {@link #SCREENLAYOUT_ROUND_NO} or {@link #SCREENLAYOUT_ROUND_YES}.
    227      * </p>
    228      *
    229      * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting
    230      * Multiple Screens</a> for more information.</p>
    231      */
    232     public int screenLayout;
    233 
    234     /** @hide */
    235     static public int resetScreenLayout(int curLayout) {
    236         return (curLayout&~(SCREENLAYOUT_LONG_MASK | SCREENLAYOUT_SIZE_MASK
    237                         | SCREENLAYOUT_COMPAT_NEEDED))
    238                 | (SCREENLAYOUT_LONG_YES | SCREENLAYOUT_SIZE_XLARGE);
    239     }
    240 
    241     /** @hide */
    242     static public int reduceScreenLayout(int curLayout, int longSizeDp, int shortSizeDp) {
    243         int screenLayoutSize;
    244         boolean screenLayoutLong;
    245         boolean screenLayoutCompatNeeded;
    246 
    247         // These semi-magic numbers define our compatibility modes for
    248         // applications with different screens.  These are guarantees to
    249         // app developers about the space they can expect for a particular
    250         // configuration.  DO NOT CHANGE!
    251         if (longSizeDp < 470) {
    252             // This is shorter than an HVGA normal density screen (which
    253             // is 480 pixels on its long side).
    254             screenLayoutSize = SCREENLAYOUT_SIZE_SMALL;
    255             screenLayoutLong = false;
    256             screenLayoutCompatNeeded = false;
    257         } else {
    258             // What size is this screen screen?
    259             if (longSizeDp >= 960 && shortSizeDp >= 720) {
    260                 // 1.5xVGA or larger screens at medium density are the point
    261                 // at which we consider it to be an extra large screen.
    262                 screenLayoutSize = SCREENLAYOUT_SIZE_XLARGE;
    263             } else if (longSizeDp >= 640 && shortSizeDp >= 480) {
    264                 // VGA or larger screens at medium density are the point
    265                 // at which we consider it to be a large screen.
    266                 screenLayoutSize = SCREENLAYOUT_SIZE_LARGE;
    267             } else {
    268                 screenLayoutSize = SCREENLAYOUT_SIZE_NORMAL;
    269             }
    270 
    271             // If this screen is wider than normal HVGA, or taller
    272             // than FWVGA, then for old apps we want to run in size
    273             // compatibility mode.
    274             if (shortSizeDp > 321 || longSizeDp > 570) {
    275                 screenLayoutCompatNeeded = true;
    276             } else {
    277                 screenLayoutCompatNeeded = false;
    278             }
    279 
    280             // Is this a long screen?
    281             if (((longSizeDp*3)/5) >= (shortSizeDp-1)) {
    282                 // Anything wider than WVGA (5:3) is considering to be long.
    283                 screenLayoutLong = true;
    284             } else {
    285                 screenLayoutLong = false;
    286             }
    287         }
    288 
    289         // Now reduce the last screenLayout to not be better than what we
    290         // have found.
    291         if (!screenLayoutLong) {
    292             curLayout = (curLayout&~SCREENLAYOUT_LONG_MASK) | SCREENLAYOUT_LONG_NO;
    293         }
    294         if (screenLayoutCompatNeeded) {
    295             curLayout |= Configuration.SCREENLAYOUT_COMPAT_NEEDED;
    296         }
    297         int curSize = curLayout&SCREENLAYOUT_SIZE_MASK;
    298         if (screenLayoutSize < curSize) {
    299             curLayout = (curLayout&~SCREENLAYOUT_SIZE_MASK) | screenLayoutSize;
    300         }
    301         return curLayout;
    302     }
    303 
    304     /** @hide */
    305     public static String configurationDiffToString(int diff) {
    306         ArrayList<String> list = new ArrayList<>();
    307         if ((diff & ActivityInfo.CONFIG_MCC) != 0) {
    308             list.add("CONFIG_MCC");
    309         }
    310         if ((diff & ActivityInfo.CONFIG_MNC) != 0) {
    311             list.add("CONFIG_MNC");
    312         }
    313         if ((diff & ActivityInfo.CONFIG_LOCALE) != 0) {
    314             list.add("CONFIG_LOCALE");
    315         }
    316         if ((diff & ActivityInfo.CONFIG_TOUCHSCREEN) != 0) {
    317             list.add("CONFIG_TOUCHSCREEN");
    318         }
    319         if ((diff & ActivityInfo.CONFIG_KEYBOARD) != 0) {
    320             list.add("CONFIG_KEYBOARD");
    321         }
    322         if ((diff & ActivityInfo.CONFIG_KEYBOARD_HIDDEN) != 0) {
    323             list.add("CONFIG_KEYBOARD_HIDDEN");
    324         }
    325         if ((diff & ActivityInfo.CONFIG_NAVIGATION) != 0) {
    326             list.add("CONFIG_NAVIGATION");
    327         }
    328         if ((diff & ActivityInfo.CONFIG_ORIENTATION) != 0) {
    329             list.add("CONFIG_ORIENTATION");
    330         }
    331         if ((diff & ActivityInfo.CONFIG_SCREEN_LAYOUT) != 0) {
    332             list.add("CONFIG_SCREEN_LAYOUT");
    333         }
    334         if ((diff & ActivityInfo.CONFIG_UI_MODE) != 0) {
    335             list.add("CONFIG_UI_MODE");
    336         }
    337         if ((diff & ActivityInfo.CONFIG_SCREEN_SIZE) != 0) {
    338             list.add("CONFIG_SCREEN_SIZE");
    339         }
    340         if ((diff & ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE) != 0) {
    341             list.add("CONFIG_SMALLEST_SCREEN_SIZE");
    342         }
    343         if ((diff & ActivityInfo.CONFIG_LAYOUT_DIRECTION) != 0) {
    344             list.add("CONFIG_LAYOUT_DIRECTION");
    345         }
    346         if ((diff & ActivityInfo.CONFIG_FONT_SCALE) != 0) {
    347             list.add("CONFIG_FONT_SCALE");
    348         }
    349         StringBuilder builder = new StringBuilder("{");
    350         for (int i = 0, n = list.size(); i < n; i++) {
    351             builder.append(list.get(i));
    352             if (i != n - 1) {
    353                 builder.append(", ");
    354             }
    355         }
    356         builder.append("}");
    357         return builder.toString();
    358     }
    359 
    360     /**
    361      * Check if the Configuration's current {@link #screenLayout} is at
    362      * least the given size.
    363      *
    364      * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL},
    365      * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or
    366      * {@link #SCREENLAYOUT_SIZE_XLARGE}.
    367      * @return Returns true if the current screen layout size is at least
    368      * the given size.
    369      */
    370     public boolean isLayoutSizeAtLeast(int size) {
    371         int cur = screenLayout&SCREENLAYOUT_SIZE_MASK;
    372         if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false;
    373         return cur >= size;
    374     }
    375 
    376     /** Constant for {@link #touchscreen}: a value indicating that no value has been set. */
    377     public static final int TOUCHSCREEN_UNDEFINED = 0;
    378     /** Constant for {@link #touchscreen}, value corresponding to the
    379      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#TouchscreenQualifier">notouch</a>
    380      * resource qualifier. */
    381     public static final int TOUCHSCREEN_NOTOUCH = 1;
    382     /** @deprecated Not currently supported or used. */
    383     @Deprecated public static final int TOUCHSCREEN_STYLUS = 2;
    384     /** Constant for {@link #touchscreen}, value corresponding to the
    385      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#TouchscreenQualifier">finger</a>
    386      * resource qualifier. */
    387     public static final int TOUCHSCREEN_FINGER = 3;
    388 
    389     /**
    390      * The kind of touch screen attached to the device.
    391      * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_FINGER}.
    392      */
    393     public int touchscreen;
    394 
    395     /** Constant for {@link #keyboard}: a value indicating that no value has been set. */
    396     public static final int KEYBOARD_UNDEFINED = 0;
    397     /** Constant for {@link #keyboard}, value corresponding to the
    398      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">nokeys</a>
    399      * resource qualifier. */
    400     public static final int KEYBOARD_NOKEYS = 1;
    401     /** Constant for {@link #keyboard}, value corresponding to the
    402      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">qwerty</a>
    403      * resource qualifier. */
    404     public static final int KEYBOARD_QWERTY = 2;
    405     /** Constant for {@link #keyboard}, value corresponding to the
    406      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ImeQualifier">12key</a>
    407      * resource qualifier. */
    408     public static final int KEYBOARD_12KEY = 3;
    409 
    410     /**
    411      * The kind of keyboard attached to the device.
    412      * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY},
    413      * {@link #KEYBOARD_12KEY}.
    414      */
    415     public int keyboard;
    416 
    417     /** Constant for {@link #keyboardHidden}: a value indicating that no value has been set. */
    418     public static final int KEYBOARDHIDDEN_UNDEFINED = 0;
    419     /** Constant for {@link #keyboardHidden}, value corresponding to the
    420      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keysexposed</a>
    421      * resource qualifier. */
    422     public static final int KEYBOARDHIDDEN_NO = 1;
    423     /** Constant for {@link #keyboardHidden}, value corresponding to the
    424      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#KeyboardAvailQualifier">keyshidden</a>
    425      * resource qualifier. */
    426     public static final int KEYBOARDHIDDEN_YES = 2;
    427     /** Constant matching actual resource implementation. {@hide} */
    428     public static final int KEYBOARDHIDDEN_SOFT = 3;
    429 
    430     /**
    431      * A flag indicating whether any keyboard is available.  Unlike
    432      * {@link #hardKeyboardHidden}, this also takes into account a soft
    433      * keyboard, so if the hard keyboard is hidden but there is soft
    434      * keyboard available, it will be set to NO.  Value is one of:
    435      * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}.
    436      */
    437     public int keyboardHidden;
    438 
    439     /** Constant for {@link #hardKeyboardHidden}: a value indicating that no value has been set. */
    440     public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0;
    441     /** Constant for {@link #hardKeyboardHidden}, value corresponding to the
    442      * physical keyboard being exposed. */
    443     public static final int HARDKEYBOARDHIDDEN_NO = 1;
    444     /** Constant for {@link #hardKeyboardHidden}, value corresponding to the
    445      * physical keyboard being hidden. */
    446     public static final int HARDKEYBOARDHIDDEN_YES = 2;
    447 
    448     /**
    449      * A flag indicating whether the hard keyboard has been hidden.  This will
    450      * be set on a device with a mechanism to hide the keyboard from the
    451      * user, when that mechanism is closed.  One of:
    452      * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}.
    453      */
    454     public int hardKeyboardHidden;
    455 
    456     /** Constant for {@link #navigation}: a value indicating that no value has been set. */
    457     public static final int NAVIGATION_UNDEFINED = 0;
    458     /** Constant for {@link #navigation}, value corresponding to the
    459      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">nonav</a>
    460      * resource qualifier. */
    461     public static final int NAVIGATION_NONAV = 1;
    462     /** Constant for {@link #navigation}, value corresponding to the
    463      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">dpad</a>
    464      * resource qualifier. */
    465     public static final int NAVIGATION_DPAD = 2;
    466     /** Constant for {@link #navigation}, value corresponding to the
    467      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">trackball</a>
    468      * resource qualifier. */
    469     public static final int NAVIGATION_TRACKBALL = 3;
    470     /** Constant for {@link #navigation}, value corresponding to the
    471      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavigationQualifier">wheel</a>
    472      * resource qualifier. */
    473     public static final int NAVIGATION_WHEEL = 4;
    474 
    475     /**
    476      * The kind of navigation method available on the device.
    477      * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD},
    478      * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}.
    479      */
    480     public int navigation;
    481 
    482     /** Constant for {@link #navigationHidden}: a value indicating that no value has been set. */
    483     public static final int NAVIGATIONHIDDEN_UNDEFINED = 0;
    484     /** Constant for {@link #navigationHidden}, value corresponding to the
    485      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavAvailQualifier">navexposed</a>
    486      * resource qualifier. */
    487     public static final int NAVIGATIONHIDDEN_NO = 1;
    488     /** Constant for {@link #navigationHidden}, value corresponding to the
    489      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NavAvailQualifier">navhidden</a>
    490      * resource qualifier. */
    491     public static final int NAVIGATIONHIDDEN_YES = 2;
    492 
    493     /**
    494      * A flag indicating whether any 5-way or DPAD navigation available.
    495      * This will be set on a device with a mechanism to hide the navigation
    496      * controls from the user, when that mechanism is closed.  One of:
    497      * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}.
    498      */
    499     public int navigationHidden;
    500 
    501     /** Constant for {@link #orientation}: a value indicating that no value has been set. */
    502     public static final int ORIENTATION_UNDEFINED = 0;
    503     /** Constant for {@link #orientation}, value corresponding to the
    504      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#OrientationQualifier">port</a>
    505      * resource qualifier. */
    506     public static final int ORIENTATION_PORTRAIT = 1;
    507     /** Constant for {@link #orientation}, value corresponding to the
    508      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#OrientationQualifier">land</a>
    509      * resource qualifier. */
    510     public static final int ORIENTATION_LANDSCAPE = 2;
    511     /** @deprecated Not currently supported or used. */
    512     @Deprecated public static final int ORIENTATION_SQUARE = 3;
    513 
    514     /**
    515      * Overall orientation of the screen.  May be one of
    516      * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}.
    517      */
    518     public int orientation;
    519 
    520     /** Constant for {@link #uiMode}: bits that encode the mode type. */
    521     public static final int UI_MODE_TYPE_MASK = 0x0f;
    522     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    523      * value indicating that no mode type has been set. */
    524     public static final int UI_MODE_TYPE_UNDEFINED = 0x00;
    525     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    526      * value that corresponds to
    527      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">no
    528      * UI mode</a> resource qualifier specified. */
    529     public static final int UI_MODE_TYPE_NORMAL = 0x01;
    530     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    531      * value that corresponds to the
    532      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">desk</a>
    533      * resource qualifier. */
    534     public static final int UI_MODE_TYPE_DESK = 0x02;
    535     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    536      * value that corresponds to the
    537      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">car</a>
    538      * resource qualifier. */
    539     public static final int UI_MODE_TYPE_CAR = 0x03;
    540     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    541      * value that corresponds to the
    542      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">television</a>
    543      * resource qualifier. */
    544     public static final int UI_MODE_TYPE_TELEVISION = 0x04;
    545     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    546      * value that corresponds to the
    547      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">appliance</a>
    548      * resource qualifier. */
    549     public static final int UI_MODE_TYPE_APPLIANCE = 0x05;
    550     /** Constant for {@link #uiMode}: a {@link #UI_MODE_TYPE_MASK}
    551      * value that corresponds to the
    552      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#UiModeQualifier">watch</a>
    553      * resource qualifier. */
    554     public static final int UI_MODE_TYPE_WATCH = 0x06;
    555 
    556     /** Constant for {@link #uiMode}: bits that encode the night mode. */
    557     public static final int UI_MODE_NIGHT_MASK = 0x30;
    558     /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK}
    559      * value indicating that no mode type has been set. */
    560     public static final int UI_MODE_NIGHT_UNDEFINED = 0x00;
    561     /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK}
    562      * value that corresponds to the
    563      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NightQualifier">notnight</a>
    564      * resource qualifier. */
    565     public static final int UI_MODE_NIGHT_NO = 0x10;
    566     /** Constant for {@link #uiMode}: a {@link #UI_MODE_NIGHT_MASK}
    567      * value that corresponds to the
    568      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#NightQualifier">night</a>
    569      * resource qualifier. */
    570     public static final int UI_MODE_NIGHT_YES = 0x20;
    571 
    572     /**
    573      * Bit mask of the ui mode.  Currently there are two fields:
    574      * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the
    575      * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED},
    576      * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK},
    577      * {@link #UI_MODE_TYPE_CAR}, {@link #UI_MODE_TYPE_TELEVISION},
    578      * {@link #UI_MODE_TYPE_APPLIANCE}, or {@link #UI_MODE_TYPE_WATCH}.
    579      *
    580      * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen
    581      * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED},
    582      * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}.
    583      */
    584     public int uiMode;
    585 
    586     /**
    587      * Default value for {@link #screenWidthDp} indicating that no width
    588      * has been specified.
    589      */
    590     public static final int SCREEN_WIDTH_DP_UNDEFINED = 0;
    591 
    592     /**
    593      * The current width of the available screen space, in dp units,
    594      * corresponding to
    595      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenWidthQualifier">screen
    596      * width</a> resource qualifier.  Set to
    597      * {@link #SCREEN_WIDTH_DP_UNDEFINED} if no width is specified.
    598      */
    599     public int screenWidthDp;
    600 
    601     /**
    602      * Default value for {@link #screenHeightDp} indicating that no width
    603      * has been specified.
    604      */
    605     public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0;
    606 
    607     /**
    608      * The current height of the available screen space, in dp units,
    609      * corresponding to
    610      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#ScreenHeightQualifier">screen
    611      * height</a> resource qualifier.  Set to
    612      * {@link #SCREEN_HEIGHT_DP_UNDEFINED} if no height is specified.
    613      */
    614     public int screenHeightDp;
    615 
    616     /**
    617      * Default value for {@link #smallestScreenWidthDp} indicating that no width
    618      * has been specified.
    619      */
    620     public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0;
    621 
    622     /**
    623      * The smallest screen size an application will see in normal operation,
    624      * corresponding to
    625      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#SmallestScreenWidthQualifier">smallest
    626      * screen width</a> resource qualifier.
    627      * This is the smallest value of both screenWidthDp and screenHeightDp
    628      * in both portrait and landscape.  Set to
    629      * {@link #SMALLEST_SCREEN_WIDTH_DP_UNDEFINED} if no width is specified.
    630      */
    631     public int smallestScreenWidthDp;
    632 
    633     /**
    634      * Default value for {@link #densityDpi} indicating that no width
    635      * has been specified.
    636      */
    637     public static final int DENSITY_DPI_UNDEFINED = 0;
    638 
    639     /**
    640      * Value for {@link #densityDpi} for resources that scale to any density (vector drawables).
    641      * {@hide}
    642      */
    643     public static final int DENSITY_DPI_ANY = 0xfffe;
    644 
    645     /**
    646      * Value for {@link #densityDpi} for resources that are not meant to be scaled.
    647      * {@hide}
    648      */
    649     public static final int DENSITY_DPI_NONE = 0xffff;
    650 
    651     /**
    652      * The target screen density being rendered to,
    653      * corresponding to
    654      * <a href="{@docRoot}guide/topics/resources/providing-resources.html#DensityQualifier">density</a>
    655      * resource qualifier.  Set to
    656      * {@link #DENSITY_DPI_UNDEFINED} if no density is specified.
    657      */
    658     public int densityDpi;
    659 
    660     /** @hide Hack to get this information from WM to app running in compat mode. */
    661     public int compatScreenWidthDp;
    662     /** @hide Hack to get this information from WM to app running in compat mode. */
    663     public int compatScreenHeightDp;
    664     /** @hide Hack to get this information from WM to app running in compat mode. */
    665     public int compatSmallestScreenWidthDp;
    666 
    667     /**
    668      * @hide Internal book-keeping.
    669      */
    670     public int seq;
    671 
    672     /** @hide */
    673     @IntDef(flag = true,
    674             value = {
    675                     NATIVE_CONFIG_MCC,
    676                     NATIVE_CONFIG_MNC,
    677                     NATIVE_CONFIG_LOCALE,
    678                     NATIVE_CONFIG_TOUCHSCREEN,
    679                     NATIVE_CONFIG_KEYBOARD,
    680                     NATIVE_CONFIG_KEYBOARD_HIDDEN,
    681                     NATIVE_CONFIG_NAVIGATION,
    682                     NATIVE_CONFIG_ORIENTATION,
    683                     NATIVE_CONFIG_DENSITY,
    684                     NATIVE_CONFIG_SCREEN_SIZE,
    685                     NATIVE_CONFIG_VERSION,
    686                     NATIVE_CONFIG_SCREEN_LAYOUT,
    687                     NATIVE_CONFIG_UI_MODE,
    688                     NATIVE_CONFIG_SMALLEST_SCREEN_SIZE,
    689                     NATIVE_CONFIG_LAYOUTDIR,
    690             })
    691     @Retention(RetentionPolicy.SOURCE)
    692     public @interface NativeConfig {}
    693 
    694     /** @hide Native-specific bit mask for MCC config; DO NOT USE UNLESS YOU ARE SURE. */
    695     public static final int NATIVE_CONFIG_MCC = 0x0001;
    696     /** @hide Native-specific bit mask for MNC config; DO NOT USE UNLESS YOU ARE SURE. */
    697     public static final int NATIVE_CONFIG_MNC = 0x0002;
    698     /** @hide Native-specific bit mask for LOCALE config; DO NOT USE UNLESS YOU ARE SURE. */
    699     public static final int NATIVE_CONFIG_LOCALE = 0x0004;
    700     /** @hide Native-specific bit mask for TOUCHSCREEN config; DO NOT USE UNLESS YOU ARE SURE. */
    701     public static final int NATIVE_CONFIG_TOUCHSCREEN = 0x0008;
    702     /** @hide Native-specific bit mask for KEYBOARD config; DO NOT USE UNLESS YOU ARE SURE. */
    703     public static final int NATIVE_CONFIG_KEYBOARD = 0x0010;
    704     /** @hide Native-specific bit mask for KEYBOARD_HIDDEN config; DO NOT USE UNLESS YOU
    705      * ARE SURE. */
    706     public static final int NATIVE_CONFIG_KEYBOARD_HIDDEN = 0x0020;
    707     /** @hide Native-specific bit mask for NAVIGATION config; DO NOT USE UNLESS YOU ARE SURE. */
    708     public static final int NATIVE_CONFIG_NAVIGATION = 0x0040;
    709     /** @hide Native-specific bit mask for ORIENTATION config; DO NOT USE UNLESS YOU ARE SURE. */
    710     public static final int NATIVE_CONFIG_ORIENTATION = 0x0080;
    711     /** @hide Native-specific bit mask for DENSITY config; DO NOT USE UNLESS YOU ARE SURE. */
    712     public static final int NATIVE_CONFIG_DENSITY = 0x0100;
    713     /** @hide Native-specific bit mask for SCREEN_SIZE config; DO NOT USE UNLESS YOU ARE SURE. */
    714     public static final int NATIVE_CONFIG_SCREEN_SIZE = 0x0200;
    715     /** @hide Native-specific bit mask for VERSION config; DO NOT USE UNLESS YOU ARE SURE. */
    716     public static final int NATIVE_CONFIG_VERSION = 0x0400;
    717     /** @hide Native-specific bit mask for SCREEN_LAYOUT config; DO NOT USE UNLESS YOU ARE SURE. */
    718     public static final int NATIVE_CONFIG_SCREEN_LAYOUT = 0x0800;
    719     /** @hide Native-specific bit mask for UI_MODE config; DO NOT USE UNLESS YOU ARE SURE. */
    720     public static final int NATIVE_CONFIG_UI_MODE = 0x1000;
    721     /** @hide Native-specific bit mask for SMALLEST_SCREEN_SIZE config; DO NOT USE UNLESS YOU
    722      * ARE SURE. */
    723     public static final int NATIVE_CONFIG_SMALLEST_SCREEN_SIZE = 0x2000;
    724     /** @hide Native-specific bit mask for LAYOUTDIR config ; DO NOT USE UNLESS YOU ARE SURE.*/
    725     public static final int NATIVE_CONFIG_LAYOUTDIR = 0x4000;
    726 
    727     /**
    728      * Construct an invalid Configuration.  You must call {@link #setToDefaults}
    729      * for this object to be valid.  {@more}
    730      */
    731     public Configuration() {
    732         setToDefaults();
    733     }
    734 
    735     /**
    736      * Makes a deep copy suitable for modification.
    737      */
    738     public Configuration(Configuration o) {
    739         setTo(o);
    740     }
    741 
    742     /* This brings mLocaleList in sync with locale in case a user of the older API who doesn't know
    743      * about setLocales() has changed locale directly. */
    744     private void fixUpLocaleList() {
    745         if ((locale == null && !mLocaleList.isEmpty()) ||
    746                 (locale != null && !locale.equals(mLocaleList.get(0)))) {
    747             mLocaleList = locale == null ? LocaleList.getEmptyLocaleList() : new LocaleList(locale);
    748         }
    749     }
    750 
    751     public void setTo(Configuration o) {
    752         fontScale = o.fontScale;
    753         mcc = o.mcc;
    754         mnc = o.mnc;
    755         locale = o.locale == null ? null : (Locale) o.locale.clone();
    756         o.fixUpLocaleList();
    757         mLocaleList = o.mLocaleList;
    758         userSetLocale = o.userSetLocale;
    759         touchscreen = o.touchscreen;
    760         keyboard = o.keyboard;
    761         keyboardHidden = o.keyboardHidden;
    762         hardKeyboardHidden = o.hardKeyboardHidden;
    763         navigation = o.navigation;
    764         navigationHidden = o.navigationHidden;
    765         orientation = o.orientation;
    766         screenLayout = o.screenLayout;
    767         uiMode = o.uiMode;
    768         screenWidthDp = o.screenWidthDp;
    769         screenHeightDp = o.screenHeightDp;
    770         smallestScreenWidthDp = o.smallestScreenWidthDp;
    771         densityDpi = o.densityDpi;
    772         compatScreenWidthDp = o.compatScreenWidthDp;
    773         compatScreenHeightDp = o.compatScreenHeightDp;
    774         compatSmallestScreenWidthDp = o.compatSmallestScreenWidthDp;
    775         seq = o.seq;
    776     }
    777 
    778     public String toString() {
    779         StringBuilder sb = new StringBuilder(128);
    780         sb.append("{");
    781         sb.append(fontScale);
    782         sb.append(" ");
    783         if (mcc != 0) {
    784             sb.append(mcc);
    785             sb.append("mcc");
    786         } else {
    787             sb.append("?mcc");
    788         }
    789         if (mnc != 0) {
    790             sb.append(mnc);
    791             sb.append("mnc");
    792         } else {
    793             sb.append("?mnc");
    794         }
    795         fixUpLocaleList();
    796         if (!mLocaleList.isEmpty()) {
    797             sb.append(" ");
    798             sb.append(mLocaleList);
    799         } else {
    800             sb.append(" ?localeList");
    801         }
    802         int layoutDir = (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK);
    803         switch (layoutDir) {
    804             case SCREENLAYOUT_LAYOUTDIR_UNDEFINED: sb.append(" ?layoutDir"); break;
    805             case SCREENLAYOUT_LAYOUTDIR_LTR: sb.append(" ldltr"); break;
    806             case SCREENLAYOUT_LAYOUTDIR_RTL: sb.append(" ldrtl"); break;
    807             default: sb.append(" layoutDir=");
    808                 sb.append(layoutDir >> SCREENLAYOUT_LAYOUTDIR_SHIFT); break;
    809         }
    810         if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) {
    811             sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp");
    812         } else {
    813             sb.append(" ?swdp");
    814         }
    815         if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) {
    816             sb.append(" w"); sb.append(screenWidthDp); sb.append("dp");
    817         } else {
    818             sb.append(" ?wdp");
    819         }
    820         if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) {
    821             sb.append(" h"); sb.append(screenHeightDp); sb.append("dp");
    822         } else {
    823             sb.append(" ?hdp");
    824         }
    825         if (densityDpi != DENSITY_DPI_UNDEFINED) {
    826             sb.append(" "); sb.append(densityDpi); sb.append("dpi");
    827         } else {
    828             sb.append(" ?density");
    829         }
    830         switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) {
    831             case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break;
    832             case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break;
    833             case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break;
    834             case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break;
    835             case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break;
    836             default: sb.append(" layoutSize=");
    837                     sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break;
    838         }
    839         switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) {
    840             case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break;
    841             case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break;
    842             case SCREENLAYOUT_LONG_YES: sb.append(" long"); break;
    843             default: sb.append(" layoutLong=");
    844                     sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break;
    845         }
    846         switch (orientation) {
    847             case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break;
    848             case ORIENTATION_LANDSCAPE: sb.append(" land"); break;
    849             case ORIENTATION_PORTRAIT: sb.append(" port"); break;
    850             default: sb.append(" orien="); sb.append(orientation); break;
    851         }
    852         switch ((uiMode&UI_MODE_TYPE_MASK)) {
    853             case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break;
    854             case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break;
    855             case UI_MODE_TYPE_DESK: sb.append(" desk"); break;
    856             case UI_MODE_TYPE_CAR: sb.append(" car"); break;
    857             case UI_MODE_TYPE_TELEVISION: sb.append(" television"); break;
    858             case UI_MODE_TYPE_APPLIANCE: sb.append(" appliance"); break;
    859             case UI_MODE_TYPE_WATCH: sb.append(" watch"); break;
    860             default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break;
    861         }
    862         switch ((uiMode&UI_MODE_NIGHT_MASK)) {
    863             case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break;
    864             case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break;
    865             case UI_MODE_NIGHT_YES: sb.append(" night"); break;
    866             default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break;
    867         }
    868         switch (touchscreen) {
    869             case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break;
    870             case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break;
    871             case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break;
    872             case TOUCHSCREEN_FINGER: sb.append(" finger"); break;
    873             default: sb.append(" touch="); sb.append(touchscreen); break;
    874         }
    875         switch (keyboard) {
    876             case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break;
    877             case KEYBOARD_NOKEYS: sb.append(" -keyb"); break;
    878             case KEYBOARD_QWERTY: sb.append(" qwerty"); break;
    879             case KEYBOARD_12KEY: sb.append(" 12key"); break;
    880             default: sb.append(" keys="); sb.append(keyboard); break;
    881         }
    882         switch (keyboardHidden) {
    883             case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break;
    884             case KEYBOARDHIDDEN_NO: sb.append("/v"); break;
    885             case KEYBOARDHIDDEN_YES: sb.append("/h"); break;
    886             case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break;
    887             default: sb.append("/"); sb.append(keyboardHidden); break;
    888         }
    889         switch (hardKeyboardHidden) {
    890             case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break;
    891             case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break;
    892             case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break;
    893             default: sb.append("/"); sb.append(hardKeyboardHidden); break;
    894         }
    895         switch (navigation) {
    896             case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break;
    897             case NAVIGATION_NONAV: sb.append(" -nav"); break;
    898             case NAVIGATION_DPAD: sb.append(" dpad"); break;
    899             case NAVIGATION_TRACKBALL: sb.append(" tball"); break;
    900             case NAVIGATION_WHEEL: sb.append(" wheel"); break;
    901             default: sb.append(" nav="); sb.append(navigation); break;
    902         }
    903         switch (navigationHidden) {
    904             case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break;
    905             case NAVIGATIONHIDDEN_NO: sb.append("/v"); break;
    906             case NAVIGATIONHIDDEN_YES: sb.append("/h"); break;
    907             default: sb.append("/"); sb.append(navigationHidden); break;
    908         }
    909         if (seq != 0) {
    910             sb.append(" s.");
    911             sb.append(seq);
    912         }
    913         sb.append('}');
    914         return sb.toString();
    915     }
    916 
    917     /**
    918      * Set this object to the system defaults.
    919      */
    920     public void setToDefaults() {
    921         fontScale = 1;
    922         mcc = mnc = 0;
    923         mLocaleList = LocaleList.getEmptyLocaleList();
    924         locale = null;
    925         userSetLocale = false;
    926         touchscreen = TOUCHSCREEN_UNDEFINED;
    927         keyboard = KEYBOARD_UNDEFINED;
    928         keyboardHidden = KEYBOARDHIDDEN_UNDEFINED;
    929         hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED;
    930         navigation = NAVIGATION_UNDEFINED;
    931         navigationHidden = NAVIGATIONHIDDEN_UNDEFINED;
    932         orientation = ORIENTATION_UNDEFINED;
    933         screenLayout = SCREENLAYOUT_UNDEFINED;
    934         uiMode = UI_MODE_TYPE_UNDEFINED;
    935         screenWidthDp = compatScreenWidthDp = SCREEN_WIDTH_DP_UNDEFINED;
    936         screenHeightDp = compatScreenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED;
    937         smallestScreenWidthDp = compatSmallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED;
    938         densityDpi = DENSITY_DPI_UNDEFINED;
    939         seq = 0;
    940     }
    941 
    942     /** {@hide} */
    943     @Deprecated public void makeDefault() {
    944         setToDefaults();
    945     }
    946 
    947     /**
    948      * Copies the fields from delta into this Configuration object, keeping
    949      * track of which ones have changed. Any undefined fields in {@code delta}
    950      * are ignored and not copied in to the current Configuration.
    951      *
    952      * @return a bit mask of the changed fields, as per {@link #diff}
    953      */
    954     public @Config int updateFrom(@NonNull Configuration delta) {
    955         int changed = 0;
    956         if (delta.fontScale > 0 && fontScale != delta.fontScale) {
    957             changed |= ActivityInfo.CONFIG_FONT_SCALE;
    958             fontScale = delta.fontScale;
    959         }
    960         if (delta.mcc != 0 && mcc != delta.mcc) {
    961             changed |= ActivityInfo.CONFIG_MCC;
    962             mcc = delta.mcc;
    963         }
    964         if (delta.mnc != 0 && mnc != delta.mnc) {
    965             changed |= ActivityInfo.CONFIG_MNC;
    966             mnc = delta.mnc;
    967         }
    968         fixUpLocaleList();
    969         delta.fixUpLocaleList();
    970         if (!delta.mLocaleList.isEmpty() && !mLocaleList.equals(delta.mLocaleList)) {
    971             changed |= ActivityInfo.CONFIG_LOCALE;
    972             mLocaleList = delta.mLocaleList;
    973             // delta.locale can't be null, since delta.mLocaleList is not empty.
    974             if (!delta.locale.equals(locale)) {
    975                 locale = (Locale) delta.locale.clone();
    976                 // If locale has changed, then layout direction is also changed ...
    977                 changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION;
    978                 // ... and we need to update the layout direction (represented by the first
    979                 // 2 most significant bits in screenLayout).
    980                 setLayoutDirection(locale);
    981             }
    982         }
    983         final int deltaScreenLayoutDir = delta.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK;
    984         if (deltaScreenLayoutDir != SCREENLAYOUT_LAYOUTDIR_UNDEFINED &&
    985                 deltaScreenLayoutDir != (screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) {
    986             screenLayout = (screenLayout & ~SCREENLAYOUT_LAYOUTDIR_MASK) | deltaScreenLayoutDir;
    987             changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION;
    988         }
    989         if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0)))
    990         {
    991             changed |= ActivityInfo.CONFIG_LOCALE;
    992             userSetLocale = true;
    993         }
    994         if (delta.touchscreen != TOUCHSCREEN_UNDEFINED
    995                 && touchscreen != delta.touchscreen) {
    996             changed |= ActivityInfo.CONFIG_TOUCHSCREEN;
    997             touchscreen = delta.touchscreen;
    998         }
    999         if (delta.keyboard != KEYBOARD_UNDEFINED
   1000                 && keyboard != delta.keyboard) {
   1001             changed |= ActivityInfo.CONFIG_KEYBOARD;
   1002             keyboard = delta.keyboard;
   1003         }
   1004         if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED
   1005                 && keyboardHidden != delta.keyboardHidden) {
   1006             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1007             keyboardHidden = delta.keyboardHidden;
   1008         }
   1009         if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED
   1010                 && hardKeyboardHidden != delta.hardKeyboardHidden) {
   1011             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1012             hardKeyboardHidden = delta.hardKeyboardHidden;
   1013         }
   1014         if (delta.navigation != NAVIGATION_UNDEFINED
   1015                 && navigation != delta.navigation) {
   1016             changed |= ActivityInfo.CONFIG_NAVIGATION;
   1017             navigation = delta.navigation;
   1018         }
   1019         if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED
   1020                 && navigationHidden != delta.navigationHidden) {
   1021             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1022             navigationHidden = delta.navigationHidden;
   1023         }
   1024         if (delta.orientation != ORIENTATION_UNDEFINED
   1025                 && orientation != delta.orientation) {
   1026             changed |= ActivityInfo.CONFIG_ORIENTATION;
   1027             orientation = delta.orientation;
   1028         }
   1029         if (getScreenLayoutNoDirection(delta.screenLayout) !=
   1030                     (SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED)
   1031                 && (getScreenLayoutNoDirection(screenLayout) !=
   1032                     getScreenLayoutNoDirection(delta.screenLayout))) {
   1033             changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT;
   1034             // We need to preserve the previous layout dir bits if they were defined
   1035             if ((delta.screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK) == 0) {
   1036                 screenLayout = (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK)|delta.screenLayout;
   1037             } else {
   1038                 screenLayout = delta.screenLayout;
   1039             }
   1040         }
   1041         if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED)
   1042                 && uiMode != delta.uiMode) {
   1043             changed |= ActivityInfo.CONFIG_UI_MODE;
   1044             if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) {
   1045                 uiMode = (uiMode&~UI_MODE_TYPE_MASK)
   1046                         | (delta.uiMode&UI_MODE_TYPE_MASK);
   1047             }
   1048             if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) {
   1049                 uiMode = (uiMode&~UI_MODE_NIGHT_MASK)
   1050                         | (delta.uiMode&UI_MODE_NIGHT_MASK);
   1051             }
   1052         }
   1053         if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED
   1054                 && screenWidthDp != delta.screenWidthDp) {
   1055             changed |= ActivityInfo.CONFIG_SCREEN_SIZE;
   1056             screenWidthDp = delta.screenWidthDp;
   1057         }
   1058         if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED
   1059                 && screenHeightDp != delta.screenHeightDp) {
   1060             changed |= ActivityInfo.CONFIG_SCREEN_SIZE;
   1061             screenHeightDp = delta.screenHeightDp;
   1062         }
   1063         if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED
   1064                 && smallestScreenWidthDp != delta.smallestScreenWidthDp) {
   1065             changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE;
   1066             smallestScreenWidthDp = delta.smallestScreenWidthDp;
   1067         }
   1068         if (delta.densityDpi != DENSITY_DPI_UNDEFINED &&
   1069                 densityDpi != delta.densityDpi) {
   1070             changed |= ActivityInfo.CONFIG_DENSITY;
   1071             densityDpi = delta.densityDpi;
   1072         }
   1073         if (delta.compatScreenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) {
   1074             compatScreenWidthDp = delta.compatScreenWidthDp;
   1075         }
   1076         if (delta.compatScreenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) {
   1077             compatScreenHeightDp = delta.compatScreenHeightDp;
   1078         }
   1079         if (delta.compatSmallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) {
   1080             compatSmallestScreenWidthDp = delta.compatSmallestScreenWidthDp;
   1081         }
   1082         if (delta.seq != 0) {
   1083             seq = delta.seq;
   1084         }
   1085 
   1086         return changed;
   1087     }
   1088 
   1089     /**
   1090      * Return a bit mask of the differences between this Configuration
   1091      * object and the given one.  Does not change the values of either.  Any
   1092      * undefined fields in <var>delta</var> are ignored.
   1093      * @return Returns a bit mask indicating which configuration
   1094      * values has changed, containing any combination of
   1095      * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE
   1096      * PackageManager.ActivityInfo.CONFIG_FONT_SCALE},
   1097      * {@link android.content.pm.ActivityInfo#CONFIG_MCC
   1098      * PackageManager.ActivityInfo.CONFIG_MCC},
   1099      * {@link android.content.pm.ActivityInfo#CONFIG_MNC
   1100      * PackageManager.ActivityInfo.CONFIG_MNC},
   1101      * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE
   1102      * PackageManager.ActivityInfo.CONFIG_LOCALE},
   1103      * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN
   1104      * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN},
   1105      * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD
   1106      * PackageManager.ActivityInfo.CONFIG_KEYBOARD},
   1107      * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION
   1108      * PackageManager.ActivityInfo.CONFIG_NAVIGATION},
   1109      * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION
   1110      * PackageManager.ActivityInfo.CONFIG_ORIENTATION},
   1111      * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT
   1112      * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or
   1113      * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE
   1114      * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or
   1115      * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE
   1116      * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}.
   1117      * {@link android.content.pm.ActivityInfo#CONFIG_LAYOUT_DIRECTION
   1118      * PackageManager.ActivityInfo.CONFIG_LAYOUT_DIRECTION}.
   1119      */
   1120     public int diff(Configuration delta) {
   1121         int changed = 0;
   1122         if (delta.fontScale > 0 && fontScale != delta.fontScale) {
   1123             changed |= ActivityInfo.CONFIG_FONT_SCALE;
   1124         }
   1125         if (delta.mcc != 0 && mcc != delta.mcc) {
   1126             changed |= ActivityInfo.CONFIG_MCC;
   1127         }
   1128         if (delta.mnc != 0 && mnc != delta.mnc) {
   1129             changed |= ActivityInfo.CONFIG_MNC;
   1130         }
   1131         fixUpLocaleList();
   1132         delta.fixUpLocaleList();
   1133         if (!delta.mLocaleList.isEmpty() && !mLocaleList.equals(delta.mLocaleList)) {
   1134             changed |= ActivityInfo.CONFIG_LOCALE;
   1135             changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION;
   1136         }
   1137         final int deltaScreenLayoutDir = delta.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK;
   1138         if (deltaScreenLayoutDir != SCREENLAYOUT_LAYOUTDIR_UNDEFINED &&
   1139                 deltaScreenLayoutDir != (screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) {
   1140             changed |= ActivityInfo.CONFIG_LAYOUT_DIRECTION;
   1141         }
   1142         if (delta.touchscreen != TOUCHSCREEN_UNDEFINED
   1143                 && touchscreen != delta.touchscreen) {
   1144             changed |= ActivityInfo.CONFIG_TOUCHSCREEN;
   1145         }
   1146         if (delta.keyboard != KEYBOARD_UNDEFINED
   1147                 && keyboard != delta.keyboard) {
   1148             changed |= ActivityInfo.CONFIG_KEYBOARD;
   1149         }
   1150         if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED
   1151                 && keyboardHidden != delta.keyboardHidden) {
   1152             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1153         }
   1154         if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED
   1155                 && hardKeyboardHidden != delta.hardKeyboardHidden) {
   1156             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1157         }
   1158         if (delta.navigation != NAVIGATION_UNDEFINED
   1159                 && navigation != delta.navigation) {
   1160             changed |= ActivityInfo.CONFIG_NAVIGATION;
   1161         }
   1162         if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED
   1163                 && navigationHidden != delta.navigationHidden) {
   1164             changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN;
   1165         }
   1166         if (delta.orientation != ORIENTATION_UNDEFINED
   1167                 && orientation != delta.orientation) {
   1168             changed |= ActivityInfo.CONFIG_ORIENTATION;
   1169         }
   1170         if (getScreenLayoutNoDirection(delta.screenLayout) !=
   1171                     (SCREENLAYOUT_SIZE_UNDEFINED | SCREENLAYOUT_LONG_UNDEFINED)
   1172                 && getScreenLayoutNoDirection(screenLayout) !=
   1173                     getScreenLayoutNoDirection(delta.screenLayout)) {
   1174             changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT;
   1175         }
   1176         if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED)
   1177                 && uiMode != delta.uiMode) {
   1178             changed |= ActivityInfo.CONFIG_UI_MODE;
   1179         }
   1180         if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED
   1181                 && screenWidthDp != delta.screenWidthDp) {
   1182             changed |= ActivityInfo.CONFIG_SCREEN_SIZE;
   1183         }
   1184         if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED
   1185                 && screenHeightDp != delta.screenHeightDp) {
   1186             changed |= ActivityInfo.CONFIG_SCREEN_SIZE;
   1187         }
   1188         if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED
   1189                 && smallestScreenWidthDp != delta.smallestScreenWidthDp) {
   1190             changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE;
   1191         }
   1192         if (delta.densityDpi != DENSITY_DPI_UNDEFINED
   1193                 && densityDpi != delta.densityDpi) {
   1194             changed |= ActivityInfo.CONFIG_DENSITY;
   1195         }
   1196 
   1197         return changed;
   1198     }
   1199 
   1200     /**
   1201      * Determines if a new resource needs to be loaded from the bit set of
   1202      * configuration changes returned by {@link #updateFrom(Configuration)}.
   1203      *
   1204      * @param configChanges the mask of changes configurations as returned by
   1205      *                      {@link #updateFrom(Configuration)}
   1206      * @param interestingChanges the configuration changes that the resource
   1207      *                           can handle as given in
   1208      *                           {@link android.util.TypedValue#changingConfigurations}
   1209      * @return {@code true} if the resource needs to be loaded, {@code false}
   1210      *         otherwise
   1211      */
   1212     public static boolean needNewResources(@Config int configChanges,
   1213             @Config int interestingChanges) {
   1214         return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0;
   1215     }
   1216 
   1217     /**
   1218      * @hide Return true if the sequence of 'other' is better than this.  Assumes
   1219      * that 'this' is your current sequence and 'other' is a new one you have
   1220      * received some how and want to compare with what you have.
   1221      */
   1222     public boolean isOtherSeqNewer(Configuration other) {
   1223         if (other == null) {
   1224             // Sanity check.
   1225             return false;
   1226         }
   1227         if (other.seq == 0) {
   1228             // If the other sequence is not specified, then we must assume
   1229             // it is newer since we don't know any better.
   1230             return true;
   1231         }
   1232         if (seq == 0) {
   1233             // If this sequence is not specified, then we also consider the
   1234             // other is better.  Yes we have a preference for other.  Sue us.
   1235             return true;
   1236         }
   1237         int diff = other.seq - seq;
   1238         if (diff > 0x10000) {
   1239             // If there has been a sufficiently large jump, assume the
   1240             // sequence has wrapped around.
   1241             return false;
   1242         }
   1243         return diff > 0;
   1244     }
   1245 
   1246     /**
   1247      * Parcelable methods
   1248      */
   1249     public int describeContents() {
   1250         return 0;
   1251     }
   1252 
   1253     public void writeToParcel(Parcel dest, int flags) {
   1254         dest.writeFloat(fontScale);
   1255         dest.writeInt(mcc);
   1256         dest.writeInt(mnc);
   1257 
   1258         fixUpLocaleList();
   1259         final int localeListSize = mLocaleList.size();
   1260         dest.writeInt(localeListSize);
   1261         for (int i = 0; i < localeListSize; ++i) {
   1262             final Locale l = mLocaleList.get(i);
   1263             dest.writeString(l.toLanguageTag());
   1264         }
   1265 
   1266         if(userSetLocale) {
   1267             dest.writeInt(1);
   1268         } else {
   1269             dest.writeInt(0);
   1270         }
   1271         dest.writeInt(touchscreen);
   1272         dest.writeInt(keyboard);
   1273         dest.writeInt(keyboardHidden);
   1274         dest.writeInt(hardKeyboardHidden);
   1275         dest.writeInt(navigation);
   1276         dest.writeInt(navigationHidden);
   1277         dest.writeInt(orientation);
   1278         dest.writeInt(screenLayout);
   1279         dest.writeInt(uiMode);
   1280         dest.writeInt(screenWidthDp);
   1281         dest.writeInt(screenHeightDp);
   1282         dest.writeInt(smallestScreenWidthDp);
   1283         dest.writeInt(densityDpi);
   1284         dest.writeInt(compatScreenWidthDp);
   1285         dest.writeInt(compatScreenHeightDp);
   1286         dest.writeInt(compatSmallestScreenWidthDp);
   1287         dest.writeInt(seq);
   1288     }
   1289 
   1290     public void readFromParcel(Parcel source) {
   1291         fontScale = source.readFloat();
   1292         mcc = source.readInt();
   1293         mnc = source.readInt();
   1294 
   1295         final int localeListSize = source.readInt();
   1296         final Locale[] localeArray = new Locale[localeListSize];
   1297         for (int i = 0; i < localeListSize; ++i) {
   1298             localeArray[i] = Locale.forLanguageTag(source.readString());
   1299         }
   1300         mLocaleList = new LocaleList(localeArray);
   1301         locale = mLocaleList.get(0);
   1302 
   1303         userSetLocale = (source.readInt()==1);
   1304         touchscreen = source.readInt();
   1305         keyboard = source.readInt();
   1306         keyboardHidden = source.readInt();
   1307         hardKeyboardHidden = source.readInt();
   1308         navigation = source.readInt();
   1309         navigationHidden = source.readInt();
   1310         orientation = source.readInt();
   1311         screenLayout = source.readInt();
   1312         uiMode = source.readInt();
   1313         screenWidthDp = source.readInt();
   1314         screenHeightDp = source.readInt();
   1315         smallestScreenWidthDp = source.readInt();
   1316         densityDpi = source.readInt();
   1317         compatScreenWidthDp = source.readInt();
   1318         compatScreenHeightDp = source.readInt();
   1319         compatSmallestScreenWidthDp = source.readInt();
   1320         seq = source.readInt();
   1321     }
   1322 
   1323     public static final Parcelable.Creator<Configuration> CREATOR
   1324             = new Parcelable.Creator<Configuration>() {
   1325         public Configuration createFromParcel(Parcel source) {
   1326             return new Configuration(source);
   1327         }
   1328 
   1329         public Configuration[] newArray(int size) {
   1330             return new Configuration[size];
   1331         }
   1332     };
   1333 
   1334     /**
   1335      * Construct this Configuration object, reading from the Parcel.
   1336      */
   1337     private Configuration(Parcel source) {
   1338         readFromParcel(source);
   1339     }
   1340 
   1341     public int compareTo(Configuration that) {
   1342         int n;
   1343         float a = this.fontScale;
   1344         float b = that.fontScale;
   1345         if (a < b) return -1;
   1346         if (a > b) return 1;
   1347         n = this.mcc - that.mcc;
   1348         if (n != 0) return n;
   1349         n = this.mnc - that.mnc;
   1350         if (n != 0) return n;
   1351 
   1352         fixUpLocaleList();
   1353         that.fixUpLocaleList();
   1354         // for backward compatibility, we consider an empty locale list to be greater
   1355         // than any non-empty locale list.
   1356         if (this.mLocaleList.isEmpty()) {
   1357             if (!that.mLocaleList.isEmpty()) return 1;
   1358         } else if (that.mLocaleList.isEmpty()) {
   1359             return -1;
   1360         } else {
   1361             final int minSize = Math.min(this.mLocaleList.size(), that.mLocaleList.size());
   1362             for (int i = 0; i < minSize; ++i) {
   1363                 final Locale thisLocale = this.mLocaleList.get(i);
   1364                 final Locale thatLocale = that.mLocaleList.get(i);
   1365                 n = thisLocale.getLanguage().compareTo(thatLocale.getLanguage());
   1366                 if (n != 0) return n;
   1367                 n = thisLocale.getCountry().compareTo(thatLocale.getCountry());
   1368                 if (n != 0) return n;
   1369                 n = thisLocale.getVariant().compareTo(thatLocale.getVariant());
   1370                 if (n != 0) return n;
   1371                 n = thisLocale.toLanguageTag().compareTo(thatLocale.toLanguageTag());
   1372                 if (n != 0) return n;
   1373             }
   1374             n = this.mLocaleList.size() - that.mLocaleList.size();
   1375             if (n != 0) return n;
   1376         }
   1377 
   1378         n = this.touchscreen - that.touchscreen;
   1379         if (n != 0) return n;
   1380         n = this.keyboard - that.keyboard;
   1381         if (n != 0) return n;
   1382         n = this.keyboardHidden - that.keyboardHidden;
   1383         if (n != 0) return n;
   1384         n = this.hardKeyboardHidden - that.hardKeyboardHidden;
   1385         if (n != 0) return n;
   1386         n = this.navigation - that.navigation;
   1387         if (n != 0) return n;
   1388         n = this.navigationHidden - that.navigationHidden;
   1389         if (n != 0) return n;
   1390         n = this.orientation - that.orientation;
   1391         if (n != 0) return n;
   1392         n = this.screenLayout - that.screenLayout;
   1393         if (n != 0) return n;
   1394         n = this.uiMode - that.uiMode;
   1395         if (n != 0) return n;
   1396         n = this.screenWidthDp - that.screenWidthDp;
   1397         if (n != 0) return n;
   1398         n = this.screenHeightDp - that.screenHeightDp;
   1399         if (n != 0) return n;
   1400         n = this.smallestScreenWidthDp - that.smallestScreenWidthDp;
   1401         if (n != 0) return n;
   1402         n = this.densityDpi - that.densityDpi;
   1403         //if (n != 0) return n;
   1404         return n;
   1405     }
   1406 
   1407     public boolean equals(Configuration that) {
   1408         if (that == null) return false;
   1409         if (that == this) return true;
   1410         return this.compareTo(that) == 0;
   1411     }
   1412 
   1413     public boolean equals(Object that) {
   1414         try {
   1415             return equals((Configuration)that);
   1416         } catch (ClassCastException e) {
   1417         }
   1418         return false;
   1419     }
   1420 
   1421     public int hashCode() {
   1422         int result = 17;
   1423         result = 31 * result + Float.floatToIntBits(fontScale);
   1424         result = 31 * result + mcc;
   1425         result = 31 * result + mnc;
   1426         result = 31 * result + mLocaleList.hashCode();
   1427         result = 31 * result + touchscreen;
   1428         result = 31 * result + keyboard;
   1429         result = 31 * result + keyboardHidden;
   1430         result = 31 * result + hardKeyboardHidden;
   1431         result = 31 * result + navigation;
   1432         result = 31 * result + navigationHidden;
   1433         result = 31 * result + orientation;
   1434         result = 31 * result + screenLayout;
   1435         result = 31 * result + uiMode;
   1436         result = 31 * result + screenWidthDp;
   1437         result = 31 * result + screenHeightDp;
   1438         result = 31 * result + smallestScreenWidthDp;
   1439         result = 31 * result + densityDpi;
   1440         return result;
   1441     }
   1442 
   1443     /**
   1444      * Get the locale list. This is the preferred way for getting the locales (instead of using
   1445      * the direct accessor to {@link #locale}, which would only provide the primary locale).
   1446      *
   1447      * @return The locale list.
   1448      */
   1449     public @NonNull LocaleList getLocales() {
   1450         fixUpLocaleList();
   1451         return mLocaleList;
   1452     }
   1453 
   1454     /**
   1455      * Set the locale list. This is the preferred way for setting up the locales (instead of using
   1456      * the direct accessor or {@link #setLocale(Locale)}). This will also set the layout direction
   1457      * according to the first locale in the list.
   1458      *
   1459      * Note that the layout direction will always come from the first locale in the locale list,
   1460      * even if the locale is not supported by the resources (the resources may only support
   1461      * another locale further down the list which has a different direction).
   1462      *
   1463      * @param locales The locale list. If null, an empty LocaleList will be assigned.
   1464      */
   1465     public void setLocales(@Nullable LocaleList locales) {
   1466         mLocaleList = locales == null ? LocaleList.getEmptyLocaleList() : locales;
   1467         locale = mLocaleList.get(0);
   1468         setLayoutDirection(locale);
   1469     }
   1470 
   1471     /**
   1472      * Set the locale list to a list of just one locale. This will also set the layout direction
   1473      * according to the locale.
   1474      *
   1475      * Note that after this is run, calling <code>.equals()</code> on the input locale and the
   1476      * {@link #locale} attribute would return <code>true</code> if they are not null, but there is
   1477      * no guarantee that they would be the same object.
   1478      *
   1479      * See also the note about layout direction in {@link #setLocales(LocaleList)}.
   1480      *
   1481      * @param loc The locale. Can be null.
   1482      */
   1483     public void setLocale(@Nullable Locale loc) {
   1484         setLocales(loc == null ? LocaleList.getEmptyLocaleList() : new LocaleList(loc));
   1485     }
   1486 
   1487     /**
   1488      * @hide
   1489      *
   1490      * Clears the locale without changing layout direction.
   1491      */
   1492     public void clearLocales() {
   1493         mLocaleList = LocaleList.getEmptyLocaleList();
   1494         locale = null;
   1495     }
   1496 
   1497     /**
   1498      * Return the layout direction. Will be either {@link View#LAYOUT_DIRECTION_LTR} or
   1499      * {@link View#LAYOUT_DIRECTION_RTL}.
   1500      *
   1501      * @return Returns {@link View#LAYOUT_DIRECTION_RTL} if the configuration
   1502      * is {@link #SCREENLAYOUT_LAYOUTDIR_RTL}, otherwise {@link View#LAYOUT_DIRECTION_LTR}.
   1503      */
   1504     public int getLayoutDirection() {
   1505         return (screenLayout&SCREENLAYOUT_LAYOUTDIR_MASK) == SCREENLAYOUT_LAYOUTDIR_RTL
   1506                 ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR;
   1507     }
   1508 
   1509     /**
   1510      * Set the layout direction from a Locale.
   1511      *
   1512      * @param loc The Locale. If null will set the layout direction to
   1513      * {@link View#LAYOUT_DIRECTION_LTR}. If not null will set it to the layout direction
   1514      * corresponding to the Locale.
   1515      *
   1516      * @see View#LAYOUT_DIRECTION_LTR
   1517      * @see View#LAYOUT_DIRECTION_RTL
   1518      */
   1519     public void setLayoutDirection(Locale loc) {
   1520         // There is a "1" difference between the configuration values for
   1521         // layout direction and View constants for layout direction, just add "1".
   1522         final int layoutDirection = 1 + TextUtils.getLayoutDirectionFromLocale(loc);
   1523         screenLayout = (screenLayout&~SCREENLAYOUT_LAYOUTDIR_MASK)|
   1524                 (layoutDirection << SCREENLAYOUT_LAYOUTDIR_SHIFT);
   1525     }
   1526 
   1527     private static int getScreenLayoutNoDirection(int screenLayout) {
   1528         return screenLayout&~SCREENLAYOUT_LAYOUTDIR_MASK;
   1529     }
   1530 
   1531     /**
   1532      * Return whether the screen has a round shape. Apps may choose to change styling based
   1533      * on this property, such as the alignment or layout of text or informational icons.
   1534      *
   1535      * @return true if the screen is rounded, false otherwise
   1536      */
   1537     public boolean isScreenRound() {
   1538         return (screenLayout & SCREENLAYOUT_ROUND_MASK) == SCREENLAYOUT_ROUND_YES;
   1539     }
   1540 
   1541     /**
   1542      *
   1543      * @hide
   1544      */
   1545     public static String localesToResourceQualifier(LocaleList locs) {
   1546         final StringBuilder sb = new StringBuilder();
   1547         for (int i = 0; i < locs.size(); i++) {
   1548             final Locale loc = locs.get(i);
   1549             final int l = loc.getLanguage().length();
   1550             if (l == 0) {
   1551                 continue;
   1552             }
   1553             final int s = loc.getScript().length();
   1554             final int c = loc.getCountry().length();
   1555             final int v = loc.getVariant().length();
   1556             // We ignore locale extensions, since they are not supported by AAPT
   1557 
   1558             if (sb.length() != 0) {
   1559                 sb.append(",");
   1560             }
   1561             if (l == 2 && s == 0 && (c == 0 || c == 2) && v == 0) {
   1562                 // Traditional locale format: xx or xx-rYY
   1563                 sb.append(loc.getLanguage());
   1564                 if (c == 2) {
   1565                     sb.append("-r").append(loc.getCountry());
   1566                 }
   1567             } else {
   1568                 sb.append("b+");
   1569                 sb.append(loc.getLanguage());
   1570                 if (s != 0) {
   1571                     sb.append("+");
   1572                     sb.append(loc.getScript());
   1573                 }
   1574                 if (c != 0) {
   1575                     sb.append("+");
   1576                     sb.append(loc.getCountry());
   1577                 }
   1578                 if (v != 0) {
   1579                     sb.append("+");
   1580                     sb.append(loc.getVariant());
   1581                 }
   1582             }
   1583         }
   1584         return sb.toString();
   1585     }
   1586 
   1587 
   1588     /**
   1589      * Returns a string representation of the configuration that can be parsed
   1590      * by build tools (like AAPT).
   1591      *
   1592      * @hide
   1593      */
   1594     public static String resourceQualifierString(Configuration config) {
   1595         ArrayList<String> parts = new ArrayList<String>();
   1596 
   1597         if (config.mcc != 0) {
   1598             parts.add("mcc" + config.mcc);
   1599             if (config.mnc != 0) {
   1600                 parts.add("mnc" + config.mnc);
   1601             }
   1602         }
   1603 
   1604         if (!config.mLocaleList.isEmpty()) {
   1605             final String resourceQualifier = localesToResourceQualifier(config.mLocaleList);
   1606             if (!resourceQualifier.isEmpty()) {
   1607                 parts.add(resourceQualifier);
   1608             }
   1609         }
   1610 
   1611         switch (config.screenLayout & Configuration.SCREENLAYOUT_LAYOUTDIR_MASK) {
   1612             case Configuration.SCREENLAYOUT_LAYOUTDIR_LTR:
   1613                 parts.add("ldltr");
   1614                 break;
   1615             case Configuration.SCREENLAYOUT_LAYOUTDIR_RTL:
   1616                 parts.add("ldrtl");
   1617                 break;
   1618             default:
   1619                 break;
   1620         }
   1621 
   1622         if (config.smallestScreenWidthDp != 0) {
   1623             parts.add("sw" + config.smallestScreenWidthDp + "dp");
   1624         }
   1625 
   1626         if (config.screenWidthDp != 0) {
   1627             parts.add("w" + config.screenWidthDp + "dp");
   1628         }
   1629 
   1630         if (config.screenHeightDp != 0) {
   1631             parts.add("h" + config.screenHeightDp + "dp");
   1632         }
   1633 
   1634         switch (config.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) {
   1635             case Configuration.SCREENLAYOUT_SIZE_SMALL:
   1636                 parts.add("small");
   1637                 break;
   1638             case Configuration.SCREENLAYOUT_SIZE_NORMAL:
   1639                 parts.add("normal");
   1640                 break;
   1641             case Configuration.SCREENLAYOUT_SIZE_LARGE:
   1642                 parts.add("large");
   1643                 break;
   1644             case Configuration.SCREENLAYOUT_SIZE_XLARGE:
   1645                 parts.add("xlarge");
   1646                 break;
   1647             default:
   1648                 break;
   1649         }
   1650 
   1651         switch (config.screenLayout & Configuration.SCREENLAYOUT_LONG_MASK) {
   1652             case Configuration.SCREENLAYOUT_LONG_YES:
   1653                 parts.add("long");
   1654                 break;
   1655             case Configuration.SCREENLAYOUT_LONG_NO:
   1656                 parts.add("notlong");
   1657                 break;
   1658             default:
   1659                 break;
   1660         }
   1661 
   1662         switch (config.screenLayout & Configuration.SCREENLAYOUT_ROUND_MASK) {
   1663             case Configuration.SCREENLAYOUT_ROUND_YES:
   1664                 parts.add("round");
   1665                 break;
   1666             case Configuration.SCREENLAYOUT_ROUND_NO:
   1667                 parts.add("notround");
   1668                 break;
   1669             default:
   1670                 break;
   1671         }
   1672 
   1673         switch (config.orientation) {
   1674             case Configuration.ORIENTATION_LANDSCAPE:
   1675                 parts.add("land");
   1676                 break;
   1677             case Configuration.ORIENTATION_PORTRAIT:
   1678                 parts.add("port");
   1679                 break;
   1680             default:
   1681                 break;
   1682         }
   1683 
   1684         switch (config.uiMode & Configuration.UI_MODE_TYPE_MASK) {
   1685             case Configuration.UI_MODE_TYPE_APPLIANCE:
   1686                 parts.add("appliance");
   1687                 break;
   1688             case Configuration.UI_MODE_TYPE_DESK:
   1689                 parts.add("desk");
   1690                 break;
   1691             case Configuration.UI_MODE_TYPE_TELEVISION:
   1692                 parts.add("television");
   1693                 break;
   1694             case Configuration.UI_MODE_TYPE_CAR:
   1695                 parts.add("car");
   1696                 break;
   1697             case Configuration.UI_MODE_TYPE_WATCH:
   1698                 parts.add("watch");
   1699                 break;
   1700             default:
   1701                 break;
   1702         }
   1703 
   1704         switch (config.uiMode & Configuration.UI_MODE_NIGHT_MASK) {
   1705             case Configuration.UI_MODE_NIGHT_YES:
   1706                 parts.add("night");
   1707                 break;
   1708             case Configuration.UI_MODE_NIGHT_NO:
   1709                 parts.add("notnight");
   1710                 break;
   1711             default:
   1712                 break;
   1713         }
   1714 
   1715         switch (config.densityDpi) {
   1716             case DENSITY_DPI_UNDEFINED:
   1717                 break;
   1718             case 120:
   1719                 parts.add("ldpi");
   1720                 break;
   1721             case 160:
   1722                 parts.add("mdpi");
   1723                 break;
   1724             case 213:
   1725                 parts.add("tvdpi");
   1726                 break;
   1727             case 240:
   1728                 parts.add("hdpi");
   1729                 break;
   1730             case 320:
   1731                 parts.add("xhdpi");
   1732                 break;
   1733             case 480:
   1734                 parts.add("xxhdpi");
   1735                 break;
   1736             case 640:
   1737                 parts.add("xxxhdpi");
   1738                 break;
   1739             case DENSITY_DPI_ANY:
   1740                 parts.add("anydpi");
   1741                 break;
   1742             case DENSITY_DPI_NONE:
   1743                 parts.add("nodpi");
   1744             default:
   1745                 parts.add(config.densityDpi + "dpi");
   1746                 break;
   1747         }
   1748 
   1749         switch (config.touchscreen) {
   1750             case Configuration.TOUCHSCREEN_NOTOUCH:
   1751                 parts.add("notouch");
   1752                 break;
   1753             case Configuration.TOUCHSCREEN_FINGER:
   1754                 parts.add("finger");
   1755                 break;
   1756             default:
   1757                 break;
   1758         }
   1759 
   1760         switch (config.keyboardHidden) {
   1761             case Configuration.KEYBOARDHIDDEN_NO:
   1762                 parts.add("keysexposed");
   1763                 break;
   1764             case Configuration.KEYBOARDHIDDEN_YES:
   1765                 parts.add("keyshidden");
   1766                 break;
   1767             case Configuration.KEYBOARDHIDDEN_SOFT:
   1768                 parts.add("keyssoft");
   1769                 break;
   1770             default:
   1771                 break;
   1772         }
   1773 
   1774         switch (config.keyboard) {
   1775             case Configuration.KEYBOARD_NOKEYS:
   1776                 parts.add("nokeys");
   1777                 break;
   1778             case Configuration.KEYBOARD_QWERTY:
   1779                 parts.add("qwerty");
   1780                 break;
   1781             case Configuration.KEYBOARD_12KEY:
   1782                 parts.add("12key");
   1783                 break;
   1784             default:
   1785                 break;
   1786         }
   1787 
   1788         switch (config.navigationHidden) {
   1789             case Configuration.NAVIGATIONHIDDEN_NO:
   1790                 parts.add("navexposed");
   1791                 break;
   1792             case Configuration.NAVIGATIONHIDDEN_YES:
   1793                 parts.add("navhidden");
   1794                 break;
   1795             default:
   1796                 break;
   1797         }
   1798 
   1799         switch (config.navigation) {
   1800             case Configuration.NAVIGATION_NONAV:
   1801                 parts.add("nonav");
   1802                 break;
   1803             case Configuration.NAVIGATION_DPAD:
   1804                 parts.add("dpad");
   1805                 break;
   1806             case Configuration.NAVIGATION_TRACKBALL:
   1807                 parts.add("trackball");
   1808                 break;
   1809             case Configuration.NAVIGATION_WHEEL:
   1810                 parts.add("wheel");
   1811                 break;
   1812             default:
   1813                 break;
   1814         }
   1815 
   1816         parts.add("v" + Build.VERSION.RESOURCES_SDK_INT);
   1817         return TextUtils.join("-", parts);
   1818     }
   1819 
   1820     /**
   1821      * Generate a delta Configuration between <code>base</code> and <code>change</code>. The
   1822      * resulting delta can be used with {@link #updateFrom(Configuration)}.
   1823      * <p />
   1824      * Caveat: If the any of the Configuration's members becomes undefined, then
   1825      * {@link #updateFrom(Configuration)} will treat it as a no-op and not update that member.
   1826      *
   1827      * This is fine for device configurations as no member is ever undefined.
   1828      * {@hide}
   1829      */
   1830     public static Configuration generateDelta(Configuration base, Configuration change) {
   1831         final Configuration delta = new Configuration();
   1832         if (base.fontScale != change.fontScale) {
   1833             delta.fontScale = change.fontScale;
   1834         }
   1835 
   1836         if (base.mcc != change.mcc) {
   1837             delta.mcc = change.mcc;
   1838         }
   1839 
   1840         if (base.mnc != change.mnc) {
   1841             delta.mnc = change.mnc;
   1842         }
   1843 
   1844         base.fixUpLocaleList();
   1845         change.fixUpLocaleList();
   1846         if (!base.mLocaleList.equals(change.mLocaleList))  {
   1847             delta.mLocaleList = change.mLocaleList;
   1848             delta.locale = change.locale;
   1849         }
   1850 
   1851         if (base.touchscreen != change.touchscreen) {
   1852             delta.touchscreen = change.touchscreen;
   1853         }
   1854 
   1855         if (base.keyboard != change.keyboard) {
   1856             delta.keyboard = change.keyboard;
   1857         }
   1858 
   1859         if (base.keyboardHidden != change.keyboardHidden) {
   1860             delta.keyboardHidden = change.keyboardHidden;
   1861         }
   1862 
   1863         if (base.navigation != change.navigation) {
   1864             delta.navigation = change.navigation;
   1865         }
   1866 
   1867         if (base.navigationHidden != change.navigationHidden) {
   1868             delta.navigationHidden = change.navigationHidden;
   1869         }
   1870 
   1871         if (base.orientation != change.orientation) {
   1872             delta.orientation = change.orientation;
   1873         }
   1874 
   1875         if ((base.screenLayout & SCREENLAYOUT_SIZE_MASK) !=
   1876                 (change.screenLayout & SCREENLAYOUT_SIZE_MASK)) {
   1877             delta.screenLayout |= change.screenLayout & SCREENLAYOUT_SIZE_MASK;
   1878         }
   1879 
   1880         if ((base.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK) !=
   1881                 (change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK)) {
   1882             delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LAYOUTDIR_MASK;
   1883         }
   1884 
   1885         if ((base.screenLayout & SCREENLAYOUT_LONG_MASK) !=
   1886                 (change.screenLayout & SCREENLAYOUT_LONG_MASK)) {
   1887             delta.screenLayout |= change.screenLayout & SCREENLAYOUT_LONG_MASK;
   1888         }
   1889 
   1890         if ((base.screenLayout & SCREENLAYOUT_ROUND_MASK) !=
   1891                 (change.screenLayout & SCREENLAYOUT_ROUND_MASK)) {
   1892             delta.screenLayout |= change.screenLayout & SCREENLAYOUT_ROUND_MASK;
   1893         }
   1894 
   1895         if ((base.uiMode & UI_MODE_TYPE_MASK) != (change.uiMode & UI_MODE_TYPE_MASK)) {
   1896             delta.uiMode |= change.uiMode & UI_MODE_TYPE_MASK;
   1897         }
   1898 
   1899         if ((base.uiMode & UI_MODE_NIGHT_MASK) != (change.uiMode & UI_MODE_NIGHT_MASK)) {
   1900             delta.uiMode |= change.uiMode & UI_MODE_NIGHT_MASK;
   1901         }
   1902 
   1903         if (base.screenWidthDp != change.screenWidthDp) {
   1904             delta.screenWidthDp = change.screenWidthDp;
   1905         }
   1906 
   1907         if (base.screenHeightDp != change.screenHeightDp) {
   1908             delta.screenHeightDp = change.screenHeightDp;
   1909         }
   1910 
   1911         if (base.smallestScreenWidthDp != change.smallestScreenWidthDp) {
   1912             delta.smallestScreenWidthDp = change.smallestScreenWidthDp;
   1913         }
   1914 
   1915         if (base.densityDpi != change.densityDpi) {
   1916             delta.densityDpi = change.densityDpi;
   1917         }
   1918         return delta;
   1919     }
   1920 
   1921     private static final String XML_ATTR_FONT_SCALE = "fs";
   1922     private static final String XML_ATTR_MCC = "mcc";
   1923     private static final String XML_ATTR_MNC = "mnc";
   1924     private static final String XML_ATTR_LOCALES = "locales";
   1925     private static final String XML_ATTR_TOUCHSCREEN = "touch";
   1926     private static final String XML_ATTR_KEYBOARD = "key";
   1927     private static final String XML_ATTR_KEYBOARD_HIDDEN = "keyHid";
   1928     private static final String XML_ATTR_HARD_KEYBOARD_HIDDEN = "hardKeyHid";
   1929     private static final String XML_ATTR_NAVIGATION = "nav";
   1930     private static final String XML_ATTR_NAVIGATION_HIDDEN = "navHid";
   1931     private static final String XML_ATTR_ORIENTATION = "ori";
   1932     private static final String XML_ATTR_SCREEN_LAYOUT = "scrLay";
   1933     private static final String XML_ATTR_UI_MODE = "ui";
   1934     private static final String XML_ATTR_SCREEN_WIDTH = "width";
   1935     private static final String XML_ATTR_SCREEN_HEIGHT = "height";
   1936     private static final String XML_ATTR_SMALLEST_WIDTH = "sw";
   1937     private static final String XML_ATTR_DENSITY = "density";
   1938 
   1939     /**
   1940      * Reads the attributes corresponding to Configuration member fields from the Xml parser.
   1941      * The parser is expected to be on a tag which has Configuration attributes.
   1942      *
   1943      * @param parser The Xml parser from which to read attributes.
   1944      * @param configOut The Configuration to populate from the Xml attributes.
   1945      * {@hide}
   1946      */
   1947     public static void readXmlAttrs(XmlPullParser parser, Configuration configOut)
   1948             throws XmlPullParserException, IOException {
   1949         configOut.fontScale = Float.intBitsToFloat(
   1950                 XmlUtils.readIntAttribute(parser, XML_ATTR_FONT_SCALE, 0));
   1951         configOut.mcc = XmlUtils.readIntAttribute(parser, XML_ATTR_MCC, 0);
   1952         configOut.mnc = XmlUtils.readIntAttribute(parser, XML_ATTR_MNC, 0);
   1953 
   1954         final String localesStr = XmlUtils.readStringAttribute(parser, XML_ATTR_LOCALES);
   1955         configOut.mLocaleList = LocaleList.forLanguageTags(localesStr);
   1956         configOut.locale = configOut.mLocaleList.get(0);
   1957 
   1958         configOut.touchscreen = XmlUtils.readIntAttribute(parser, XML_ATTR_TOUCHSCREEN,
   1959                 TOUCHSCREEN_UNDEFINED);
   1960         configOut.keyboard = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD,
   1961                 KEYBOARD_UNDEFINED);
   1962         configOut.keyboardHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_KEYBOARD_HIDDEN,
   1963                 KEYBOARDHIDDEN_UNDEFINED);
   1964         configOut.hardKeyboardHidden =
   1965                 XmlUtils.readIntAttribute(parser, XML_ATTR_HARD_KEYBOARD_HIDDEN,
   1966                         HARDKEYBOARDHIDDEN_UNDEFINED);
   1967         configOut.navigation = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION,
   1968                 NAVIGATION_UNDEFINED);
   1969         configOut.navigationHidden = XmlUtils.readIntAttribute(parser, XML_ATTR_NAVIGATION_HIDDEN,
   1970                 NAVIGATIONHIDDEN_UNDEFINED);
   1971         configOut.orientation = XmlUtils.readIntAttribute(parser, XML_ATTR_ORIENTATION,
   1972                 ORIENTATION_UNDEFINED);
   1973         configOut.screenLayout = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_LAYOUT,
   1974                 SCREENLAYOUT_UNDEFINED);
   1975         configOut.uiMode = XmlUtils.readIntAttribute(parser, XML_ATTR_UI_MODE, 0);
   1976         configOut.screenWidthDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_WIDTH,
   1977                 SCREEN_WIDTH_DP_UNDEFINED);
   1978         configOut.screenHeightDp = XmlUtils.readIntAttribute(parser, XML_ATTR_SCREEN_HEIGHT,
   1979                 SCREEN_HEIGHT_DP_UNDEFINED);
   1980         configOut.smallestScreenWidthDp =
   1981                 XmlUtils.readIntAttribute(parser, XML_ATTR_SMALLEST_WIDTH,
   1982                         SMALLEST_SCREEN_WIDTH_DP_UNDEFINED);
   1983         configOut.densityDpi = XmlUtils.readIntAttribute(parser, XML_ATTR_DENSITY,
   1984                 DENSITY_DPI_UNDEFINED);
   1985     }
   1986 
   1987 
   1988     /**
   1989      * Writes the Configuration's member fields as attributes into the XmlSerializer.
   1990      * The serializer is expected to have already started a tag so that attributes can be
   1991      * immediately written.
   1992      *
   1993      * @param xml The serializer to which to write the attributes.
   1994      * @param config The Configuration whose member fields to write.
   1995      * {@hide}
   1996      */
   1997     public static void writeXmlAttrs(XmlSerializer xml, Configuration config) throws IOException {
   1998         XmlUtils.writeIntAttribute(xml, XML_ATTR_FONT_SCALE,
   1999                 Float.floatToIntBits(config.fontScale));
   2000         if (config.mcc != 0) {
   2001             XmlUtils.writeIntAttribute(xml, XML_ATTR_MCC, config.mcc);
   2002         }
   2003         if (config.mnc != 0) {
   2004             XmlUtils.writeIntAttribute(xml, XML_ATTR_MNC, config.mnc);
   2005         }
   2006         config.fixUpLocaleList();
   2007         if (!config.mLocaleList.isEmpty()) {
   2008            XmlUtils.writeStringAttribute(xml, XML_ATTR_LOCALES, config.mLocaleList.toLanguageTags());
   2009         }
   2010         if (config.touchscreen != TOUCHSCREEN_UNDEFINED) {
   2011             XmlUtils.writeIntAttribute(xml, XML_ATTR_TOUCHSCREEN, config.touchscreen);
   2012         }
   2013         if (config.keyboard != KEYBOARD_UNDEFINED) {
   2014             XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD, config.keyboard);
   2015         }
   2016         if (config.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED) {
   2017             XmlUtils.writeIntAttribute(xml, XML_ATTR_KEYBOARD_HIDDEN, config.keyboardHidden);
   2018         }
   2019         if (config.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED) {
   2020             XmlUtils.writeIntAttribute(xml, XML_ATTR_HARD_KEYBOARD_HIDDEN,
   2021                     config.hardKeyboardHidden);
   2022         }
   2023         if (config.navigation != NAVIGATION_UNDEFINED) {
   2024             XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION, config.navigation);
   2025         }
   2026         if (config.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED) {
   2027             XmlUtils.writeIntAttribute(xml, XML_ATTR_NAVIGATION_HIDDEN, config.navigationHidden);
   2028         }
   2029         if (config.orientation != ORIENTATION_UNDEFINED) {
   2030             XmlUtils.writeIntAttribute(xml, XML_ATTR_ORIENTATION, config.orientation);
   2031         }
   2032         if (config.screenLayout != SCREENLAYOUT_UNDEFINED) {
   2033             XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_LAYOUT, config.screenLayout);
   2034         }
   2035         if (config.uiMode != 0) {
   2036             XmlUtils.writeIntAttribute(xml, XML_ATTR_UI_MODE, config.uiMode);
   2037         }
   2038         if (config.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) {
   2039             XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_WIDTH, config.screenWidthDp);
   2040         }
   2041         if (config.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) {
   2042             XmlUtils.writeIntAttribute(xml, XML_ATTR_SCREEN_HEIGHT, config.screenHeightDp);
   2043         }
   2044         if (config.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) {
   2045             XmlUtils.writeIntAttribute(xml, XML_ATTR_SMALLEST_WIDTH, config.smallestScreenWidthDp);
   2046         }
   2047         if (config.densityDpi != DENSITY_DPI_UNDEFINED) {
   2048             XmlUtils.writeIntAttribute(xml, XML_ATTR_DENSITY, config.densityDpi);
   2049         }
   2050     }
   2051 }
   2052