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      1 /*
      2  * Copyright (C) 2007 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.pm;
     18 
     19 import android.annotation.IntDef;
     20 import android.content.res.Configuration;
     21 import android.os.Parcel;
     22 import android.os.Parcelable;
     23 import android.util.Printer;
     24 
     25 import java.lang.annotation.Retention;
     26 import java.lang.annotation.RetentionPolicy;
     27 
     28 /**
     29  * Information you can retrieve about a particular application
     30  * activity or receiver. This corresponds to information collected
     31  * from the AndroidManifest.xml's <activity> and
     32  * <receiver> tags.
     33  */
     34 public class ActivityInfo extends ComponentInfo
     35         implements Parcelable {
     36     /**
     37      * A style resource identifier (in the package's resources) of this
     38      * activity's theme.  From the "theme" attribute or, if not set, 0.
     39      */
     40     public int theme;
     41 
     42     /**
     43      * Constant corresponding to <code>standard</code> in
     44      * the {@link android.R.attr#launchMode} attribute.
     45      */
     46     public static final int LAUNCH_MULTIPLE = 0;
     47     /**
     48      * Constant corresponding to <code>singleTop</code> in
     49      * the {@link android.R.attr#launchMode} attribute.
     50      */
     51     public static final int LAUNCH_SINGLE_TOP = 1;
     52     /**
     53      * Constant corresponding to <code>singleTask</code> in
     54      * the {@link android.R.attr#launchMode} attribute.
     55      */
     56     public static final int LAUNCH_SINGLE_TASK = 2;
     57     /**
     58      * Constant corresponding to <code>singleInstance</code> in
     59      * the {@link android.R.attr#launchMode} attribute.
     60      */
     61     public static final int LAUNCH_SINGLE_INSTANCE = 3;
     62     /**
     63      * The launch mode style requested by the activity.  From the
     64      * {@link android.R.attr#launchMode} attribute, one of
     65      * {@link #LAUNCH_MULTIPLE},
     66      * {@link #LAUNCH_SINGLE_TOP}, {@link #LAUNCH_SINGLE_TASK}, or
     67      * {@link #LAUNCH_SINGLE_INSTANCE}.
     68      */
     69     public int launchMode;
     70 
     71     /**
     72      * Constant corresponding to <code>none</code> in
     73      * the {@link android.R.attr#documentLaunchMode} attribute.
     74      */
     75     public static final int DOCUMENT_LAUNCH_NONE = 0;
     76     /**
     77      * Constant corresponding to <code>intoExisting</code> in
     78      * the {@link android.R.attr#documentLaunchMode} attribute.
     79      */
     80     public static final int DOCUMENT_LAUNCH_INTO_EXISTING = 1;
     81     /**
     82      * Constant corresponding to <code>always</code> in
     83      * the {@link android.R.attr#documentLaunchMode} attribute.
     84      */
     85     public static final int DOCUMENT_LAUNCH_ALWAYS = 2;
     86     /**
     87      * Constant corresponding to <code>never</code> in
     88      * the {@link android.R.attr#documentLaunchMode} attribute.
     89      */
     90     public static final int DOCUMENT_LAUNCH_NEVER = 3;
     91     /**
     92      * The document launch mode style requested by the activity. From the
     93      * {@link android.R.attr#documentLaunchMode} attribute, one of
     94      * {@link #DOCUMENT_LAUNCH_NONE}, {@link #DOCUMENT_LAUNCH_INTO_EXISTING},
     95      * {@link #DOCUMENT_LAUNCH_ALWAYS}.
     96      *
     97      * <p>Modes DOCUMENT_LAUNCH_ALWAYS
     98      * and DOCUMENT_LAUNCH_INTO_EXISTING are equivalent to {@link
     99      * android.content.Intent#FLAG_ACTIVITY_NEW_DOCUMENT
    100      * Intent.FLAG_ACTIVITY_NEW_DOCUMENT} with and without {@link
    101      * android.content.Intent#FLAG_ACTIVITY_MULTIPLE_TASK
    102      * Intent.FLAG_ACTIVITY_MULTIPLE_TASK} respectively.
    103      */
    104     public int documentLaunchMode;
    105 
    106     /**
    107      * Constant corresponding to <code>persistRootOnly</code> in
    108      * the {@link android.R.attr#persistableMode} attribute.
    109      */
    110     public static final int PERSIST_ROOT_ONLY = 0;
    111     /**
    112      * Constant corresponding to <code>doNotPersist</code> in
    113      * the {@link android.R.attr#persistableMode} attribute.
    114      */
    115     public static final int PERSIST_NEVER = 1;
    116     /**
    117      * Constant corresponding to <code>persistAcrossReboots</code> in
    118      * the {@link android.R.attr#persistableMode} attribute.
    119      */
    120     public static final int PERSIST_ACROSS_REBOOTS = 2;
    121     /**
    122      * Value indicating how this activity is to be persisted across
    123      * reboots for restoring in the Recents list.
    124      * {@link android.R.attr#persistableMode}
    125      */
    126     public int persistableMode;
    127 
    128     /**
    129      * The maximum number of tasks rooted at this activity that can be in the recent task list.
    130      * Refer to {@link android.R.attr#maxRecents}.
    131      */
    132     public int maxRecents;
    133 
    134     /**
    135      * Optional name of a permission required to be able to access this
    136      * Activity.  From the "permission" attribute.
    137      */
    138     public String permission;
    139 
    140     /**
    141      * The affinity this activity has for another task in the system.  The
    142      * string here is the name of the task, often the package name of the
    143      * overall package.  If null, the activity has no affinity.  Set from the
    144      * {@link android.R.attr#taskAffinity} attribute.
    145      */
    146     public String taskAffinity;
    147 
    148     /**
    149      * If this is an activity alias, this is the real activity class to run
    150      * for it.  Otherwise, this is null.
    151      */
    152     public String targetActivity;
    153 
    154     /**
    155      * Bit in {@link #flags} indicating whether this activity is able to
    156      * run in multiple processes.  If
    157      * true, the system may instantiate it in the some process as the
    158      * process starting it in order to conserve resources.  If false, the
    159      * default, it always runs in {@link #processName}.  Set from the
    160      * {@link android.R.attr#multiprocess} attribute.
    161      */
    162     public static final int FLAG_MULTIPROCESS = 0x0001;
    163     /**
    164      * Bit in {@link #flags} indicating that, when the activity's task is
    165      * relaunched from home, this activity should be finished.
    166      * Set from the
    167      * {@link android.R.attr#finishOnTaskLaunch} attribute.
    168      */
    169     public static final int FLAG_FINISH_ON_TASK_LAUNCH = 0x0002;
    170     /**
    171      * Bit in {@link #flags} indicating that, when the activity is the root
    172      * of a task, that task's stack should be cleared each time the user
    173      * re-launches it from home.  As a result, the user will always
    174      * return to the original activity at the top of the task.
    175      * This flag only applies to activities that
    176      * are used to start the root of a new task.  Set from the
    177      * {@link android.R.attr#clearTaskOnLaunch} attribute.
    178      */
    179     public static final int FLAG_CLEAR_TASK_ON_LAUNCH = 0x0004;
    180     /**
    181      * Bit in {@link #flags} indicating that, when the activity is the root
    182      * of a task, that task's stack should never be cleared when it is
    183      * relaunched from home.  Set from the
    184      * {@link android.R.attr#alwaysRetainTaskState} attribute.
    185      */
    186     public static final int FLAG_ALWAYS_RETAIN_TASK_STATE = 0x0008;
    187     /**
    188      * Bit in {@link #flags} indicating that the activity's state
    189      * is not required to be saved, so that if there is a failure the
    190      * activity will not be removed from the activity stack.  Set from the
    191      * {@link android.R.attr#stateNotNeeded} attribute.
    192      */
    193     public static final int FLAG_STATE_NOT_NEEDED = 0x0010;
    194     /**
    195      * Bit in {@link #flags} that indicates that the activity should not
    196      * appear in the list of recently launched activities.  Set from the
    197      * {@link android.R.attr#excludeFromRecents} attribute.
    198      */
    199     public static final int FLAG_EXCLUDE_FROM_RECENTS = 0x0020;
    200     /**
    201      * Bit in {@link #flags} that indicates that the activity can be moved
    202      * between tasks based on its task affinity.  Set from the
    203      * {@link android.R.attr#allowTaskReparenting} attribute.
    204      */
    205     public static final int FLAG_ALLOW_TASK_REPARENTING = 0x0040;
    206     /**
    207      * Bit in {@link #flags} indicating that, when the user navigates away
    208      * from an activity, it should be finished.
    209      * Set from the
    210      * {@link android.R.attr#noHistory} attribute.
    211      */
    212     public static final int FLAG_NO_HISTORY = 0x0080;
    213     /**
    214      * Bit in {@link #flags} indicating that, when a request to close system
    215      * windows happens, this activity is finished.
    216      * Set from the
    217      * {@link android.R.attr#finishOnCloseSystemDialogs} attribute.
    218      */
    219     public static final int FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS = 0x0100;
    220     /**
    221      * Value for {@link #flags}: true when the application's rendering should
    222      * be hardware accelerated.
    223      */
    224     public static final int FLAG_HARDWARE_ACCELERATED = 0x0200;
    225     /**
    226      * Value for {@link #flags}: true when the application can be displayed over the lockscreen
    227      * and consequently over all users' windows.
    228      * @hide
    229      */
    230     public static final int FLAG_SHOW_ON_LOCK_SCREEN = 0x0400;
    231     /**
    232      * Bit in {@link #flags} corresponding to an immersive activity
    233      * that wishes not to be interrupted by notifications.
    234      * Applications that hide the system notification bar with
    235      * {@link android.view.WindowManager.LayoutParams#FLAG_FULLSCREEN}
    236      * may still be interrupted by high-priority notifications; for example, an
    237      * incoming phone call may use
    238      * {@link android.app.Notification#fullScreenIntent fullScreenIntent}
    239      * to present a full-screen in-call activity to the user, pausing the
    240      * current activity as a side-effect. An activity with
    241      * {@link #FLAG_IMMERSIVE} set, however, will not be interrupted; the
    242      * notification may be shown in some other way (such as a small floating
    243      * "toast" window).
    244      *
    245      * Note that this flag will always reflect the Activity's
    246      * <code>android:immersive</code> manifest definition, even if the Activity's
    247      * immersive state is changed at runtime via
    248      * {@link android.app.Activity#setImmersive(boolean)}.
    249      *
    250      * @see android.app.Notification#FLAG_HIGH_PRIORITY
    251      * @see android.app.Activity#setImmersive(boolean)
    252      */
    253     public static final int FLAG_IMMERSIVE = 0x0800;
    254     /**
    255      * Bit in {@link #flags}: If set, a task rooted at this activity will have its
    256      * baseIntent replaced by the activity immediately above this. Each activity may further
    257      * relinquish its identity to the activity above it using this flag. Set from the
    258      * {@link android.R.attr#relinquishTaskIdentity} attribute.
    259      */
    260     public static final int FLAG_RELINQUISH_TASK_IDENTITY = 0x1000;
    261     /**
    262      * Bit in {@link #flags} indicating that tasks started with this activity are to be
    263      * removed from the recent list of tasks when the last activity in the task is finished.
    264      * Corresponds to {@link android.R.attr#autoRemoveFromRecents}
    265      */
    266     public static final int FLAG_AUTO_REMOVE_FROM_RECENTS = 0x2000;
    267     /**
    268      * Bit in {@link #flags} indicating that this activity can start is creation/resume
    269      * while the previous activity is still pausing.  Corresponds to
    270      * {@link android.R.attr#resumeWhilePausing}
    271      */
    272     public static final int FLAG_RESUME_WHILE_PAUSING = 0x4000;
    273     /**
    274      * @hide Bit in {@link #flags}: If set, this component will only be seen
    275      * by the primary user.  Only works with broadcast receivers.  Set from the
    276      * android.R.attr#primaryUserOnly attribute.
    277      */
    278     public static final int FLAG_PRIMARY_USER_ONLY = 0x20000000;
    279     /**
    280      * Bit in {@link #flags}: If set, a single instance of the receiver will
    281      * run for all users on the device.  Set from the
    282      * {@link android.R.attr#singleUser} attribute.  Note that this flag is
    283      * only relevant for ActivityInfo structures that are describing receiver
    284      * components; it is not applied to activities.
    285      */
    286     public static final int FLAG_SINGLE_USER = 0x40000000;
    287     /**
    288      * @hide Bit in {@link #flags}: If set, this activity may be launched into an
    289      * owned ActivityContainer such as that within an ActivityView. If not set and
    290      * this activity is launched into such a container a SecurityExcception will be
    291      * thrown. Set from the {@link android.R.attr#allowEmbedded} attribute.
    292      */
    293     public static final int FLAG_ALLOW_EMBEDDED = 0x80000000;
    294     /**
    295      * Options that have been set in the activity declaration in the
    296      * manifest.
    297      * These include:
    298      * {@link #FLAG_MULTIPROCESS},
    299      * {@link #FLAG_FINISH_ON_TASK_LAUNCH}, {@link #FLAG_CLEAR_TASK_ON_LAUNCH},
    300      * {@link #FLAG_ALWAYS_RETAIN_TASK_STATE},
    301      * {@link #FLAG_STATE_NOT_NEEDED}, {@link #FLAG_EXCLUDE_FROM_RECENTS},
    302      * {@link #FLAG_ALLOW_TASK_REPARENTING}, {@link #FLAG_NO_HISTORY},
    303      * {@link #FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS},
    304      * {@link #FLAG_HARDWARE_ACCELERATED}, {@link #FLAG_SINGLE_USER}.
    305      */
    306     public int flags;
    307 
    308     /** @hide */
    309     @IntDef({
    310             SCREEN_ORIENTATION_UNSPECIFIED,
    311             SCREEN_ORIENTATION_LANDSCAPE,
    312             SCREEN_ORIENTATION_PORTRAIT,
    313             SCREEN_ORIENTATION_USER,
    314             SCREEN_ORIENTATION_BEHIND,
    315             SCREEN_ORIENTATION_SENSOR,
    316             SCREEN_ORIENTATION_NOSENSOR,
    317             SCREEN_ORIENTATION_SENSOR_LANDSCAPE,
    318             SCREEN_ORIENTATION_SENSOR_PORTRAIT,
    319             SCREEN_ORIENTATION_REVERSE_LANDSCAPE,
    320             SCREEN_ORIENTATION_REVERSE_PORTRAIT,
    321             SCREEN_ORIENTATION_FULL_SENSOR,
    322             SCREEN_ORIENTATION_USER_LANDSCAPE,
    323             SCREEN_ORIENTATION_USER_PORTRAIT,
    324             SCREEN_ORIENTATION_FULL_USER,
    325             SCREEN_ORIENTATION_LOCKED
    326     })
    327     @Retention(RetentionPolicy.SOURCE)
    328     public @interface ScreenOrientation {}
    329 
    330     /**
    331      * Constant corresponding to <code>unspecified</code> in
    332      * the {@link android.R.attr#screenOrientation} attribute.
    333      */
    334     public static final int SCREEN_ORIENTATION_UNSPECIFIED = -1;
    335     /**
    336      * Constant corresponding to <code>landscape</code> in
    337      * the {@link android.R.attr#screenOrientation} attribute.
    338      */
    339     public static final int SCREEN_ORIENTATION_LANDSCAPE = 0;
    340     /**
    341      * Constant corresponding to <code>portrait</code> in
    342      * the {@link android.R.attr#screenOrientation} attribute.
    343      */
    344     public static final int SCREEN_ORIENTATION_PORTRAIT = 1;
    345     /**
    346      * Constant corresponding to <code>user</code> in
    347      * the {@link android.R.attr#screenOrientation} attribute.
    348      */
    349     public static final int SCREEN_ORIENTATION_USER = 2;
    350     /**
    351      * Constant corresponding to <code>behind</code> in
    352      * the {@link android.R.attr#screenOrientation} attribute.
    353      */
    354     public static final int SCREEN_ORIENTATION_BEHIND = 3;
    355     /**
    356      * Constant corresponding to <code>sensor</code> in
    357      * the {@link android.R.attr#screenOrientation} attribute.
    358      */
    359     public static final int SCREEN_ORIENTATION_SENSOR = 4;
    360 
    361     /**
    362      * Constant corresponding to <code>nosensor</code> in
    363      * the {@link android.R.attr#screenOrientation} attribute.
    364      */
    365     public static final int SCREEN_ORIENTATION_NOSENSOR = 5;
    366 
    367     /**
    368      * Constant corresponding to <code>sensorLandscape</code> in
    369      * the {@link android.R.attr#screenOrientation} attribute.
    370      */
    371     public static final int SCREEN_ORIENTATION_SENSOR_LANDSCAPE = 6;
    372 
    373     /**
    374      * Constant corresponding to <code>sensorPortrait</code> in
    375      * the {@link android.R.attr#screenOrientation} attribute.
    376      */
    377     public static final int SCREEN_ORIENTATION_SENSOR_PORTRAIT = 7;
    378 
    379     /**
    380      * Constant corresponding to <code>reverseLandscape</code> in
    381      * the {@link android.R.attr#screenOrientation} attribute.
    382      */
    383     public static final int SCREEN_ORIENTATION_REVERSE_LANDSCAPE = 8;
    384 
    385     /**
    386      * Constant corresponding to <code>reversePortrait</code> in
    387      * the {@link android.R.attr#screenOrientation} attribute.
    388      */
    389     public static final int SCREEN_ORIENTATION_REVERSE_PORTRAIT = 9;
    390 
    391     /**
    392      * Constant corresponding to <code>fullSensor</code> in
    393      * the {@link android.R.attr#screenOrientation} attribute.
    394      */
    395     public static final int SCREEN_ORIENTATION_FULL_SENSOR = 10;
    396 
    397     /**
    398      * Constant corresponding to <code>userLandscape</code> in
    399      * the {@link android.R.attr#screenOrientation} attribute.
    400      */
    401     public static final int SCREEN_ORIENTATION_USER_LANDSCAPE = 11;
    402 
    403     /**
    404      * Constant corresponding to <code>userPortrait</code> in
    405      * the {@link android.R.attr#screenOrientation} attribute.
    406      */
    407     public static final int SCREEN_ORIENTATION_USER_PORTRAIT = 12;
    408 
    409     /**
    410      * Constant corresponding to <code>fullUser</code> in
    411      * the {@link android.R.attr#screenOrientation} attribute.
    412      */
    413     public static final int SCREEN_ORIENTATION_FULL_USER = 13;
    414 
    415     /**
    416      * Constant corresponding to <code>locked</code> in
    417      * the {@link android.R.attr#screenOrientation} attribute.
    418      */
    419     public static final int SCREEN_ORIENTATION_LOCKED = 14;
    420 
    421     /**
    422      * The preferred screen orientation this activity would like to run in.
    423      * From the {@link android.R.attr#screenOrientation} attribute, one of
    424      * {@link #SCREEN_ORIENTATION_UNSPECIFIED},
    425      * {@link #SCREEN_ORIENTATION_LANDSCAPE},
    426      * {@link #SCREEN_ORIENTATION_PORTRAIT},
    427      * {@link #SCREEN_ORIENTATION_USER},
    428      * {@link #SCREEN_ORIENTATION_BEHIND},
    429      * {@link #SCREEN_ORIENTATION_SENSOR},
    430      * {@link #SCREEN_ORIENTATION_NOSENSOR},
    431      * {@link #SCREEN_ORIENTATION_SENSOR_LANDSCAPE},
    432      * {@link #SCREEN_ORIENTATION_SENSOR_PORTRAIT},
    433      * {@link #SCREEN_ORIENTATION_REVERSE_LANDSCAPE},
    434      * {@link #SCREEN_ORIENTATION_REVERSE_PORTRAIT},
    435      * {@link #SCREEN_ORIENTATION_FULL_SENSOR},
    436      * {@link #SCREEN_ORIENTATION_USER_LANDSCAPE},
    437      * {@link #SCREEN_ORIENTATION_USER_PORTRAIT},
    438      * {@link #SCREEN_ORIENTATION_FULL_USER},
    439      * {@link #SCREEN_ORIENTATION_LOCKED},
    440      */
    441     @ScreenOrientation
    442     public int screenOrientation = SCREEN_ORIENTATION_UNSPECIFIED;
    443 
    444     /**
    445      * Bit in {@link #configChanges} that indicates that the activity
    446      * can itself handle changes to the IMSI MCC.  Set from the
    447      * {@link android.R.attr#configChanges} attribute.
    448      */
    449     public static final int CONFIG_MCC = 0x0001;
    450     /**
    451      * Bit in {@link #configChanges} that indicates that the activity
    452      * can itself handle changes to the IMSI MNC.  Set from the
    453      * {@link android.R.attr#configChanges} attribute.
    454      */
    455     public static final int CONFIG_MNC = 0x0002;
    456     /**
    457      * Bit in {@link #configChanges} that indicates that the activity
    458      * can itself handle changes to the locale.  Set from the
    459      * {@link android.R.attr#configChanges} attribute.
    460      */
    461     public static final int CONFIG_LOCALE = 0x0004;
    462     /**
    463      * Bit in {@link #configChanges} that indicates that the activity
    464      * can itself handle changes to the touchscreen type.  Set from the
    465      * {@link android.R.attr#configChanges} attribute.
    466      */
    467     public static final int CONFIG_TOUCHSCREEN = 0x0008;
    468     /**
    469      * Bit in {@link #configChanges} that indicates that the activity
    470      * can itself handle changes to the keyboard type.  Set from the
    471      * {@link android.R.attr#configChanges} attribute.
    472      */
    473     public static final int CONFIG_KEYBOARD = 0x0010;
    474     /**
    475      * Bit in {@link #configChanges} that indicates that the activity
    476      * can itself handle changes to the keyboard or navigation being hidden/exposed.
    477      * Note that inspite of the name, this applies to the changes to any
    478      * hidden states: keyboard or navigation.
    479      * Set from the {@link android.R.attr#configChanges} attribute.
    480      */
    481     public static final int CONFIG_KEYBOARD_HIDDEN = 0x0020;
    482     /**
    483      * Bit in {@link #configChanges} that indicates that the activity
    484      * can itself handle changes to the navigation type.  Set from the
    485      * {@link android.R.attr#configChanges} attribute.
    486      */
    487     public static final int CONFIG_NAVIGATION = 0x0040;
    488     /**
    489      * Bit in {@link #configChanges} that indicates that the activity
    490      * can itself handle changes to the screen orientation.  Set from the
    491      * {@link android.R.attr#configChanges} attribute.
    492      */
    493     public static final int CONFIG_ORIENTATION = 0x0080;
    494     /**
    495      * Bit in {@link #configChanges} that indicates that the activity
    496      * can itself handle changes to the screen layout.  Set from the
    497      * {@link android.R.attr#configChanges} attribute.
    498      */
    499     public static final int CONFIG_SCREEN_LAYOUT = 0x0100;
    500     /**
    501      * Bit in {@link #configChanges} that indicates that the activity
    502      * can itself handle the ui mode. Set from the
    503      * {@link android.R.attr#configChanges} attribute.
    504      */
    505     public static final int CONFIG_UI_MODE = 0x0200;
    506     /**
    507      * Bit in {@link #configChanges} that indicates that the activity
    508      * can itself handle the screen size. Set from the
    509      * {@link android.R.attr#configChanges} attribute.  This will be
    510      * set by default for applications that target an earlier version
    511      * than {@link android.os.Build.VERSION_CODES#HONEYCOMB_MR2}...
    512      * <b>however</b>, you will not see the bit set here becomes some
    513      * applications incorrectly compare {@link #configChanges} against
    514      * an absolute value rather than correctly masking out the bits
    515      * they are interested in.  Please don't do that, thanks.
    516      */
    517     public static final int CONFIG_SCREEN_SIZE = 0x0400;
    518     /**
    519      * Bit in {@link #configChanges} that indicates that the activity
    520      * can itself handle the smallest screen size. Set from the
    521      * {@link android.R.attr#configChanges} attribute.  This will be
    522      * set by default for applications that target an earlier version
    523      * than {@link android.os.Build.VERSION_CODES#HONEYCOMB_MR2}...
    524      * <b>however</b>, you will not see the bit set here becomes some
    525      * applications incorrectly compare {@link #configChanges} against
    526      * an absolute value rather than correctly masking out the bits
    527      * they are interested in.  Please don't do that, thanks.
    528      */
    529     public static final int CONFIG_SMALLEST_SCREEN_SIZE = 0x0800;
    530     /**
    531      * Bit in {@link #configChanges} that indicates that the activity
    532      * can itself handle density changes. Set from the
    533      * {@link android.R.attr#configChanges} attribute.
    534      */
    535     public static final int CONFIG_DENSITY = 0x1000;
    536     /**
    537      * Bit in {@link #configChanges} that indicates that the activity
    538      * can itself handle the change to layout direction. Set from the
    539      * {@link android.R.attr#configChanges} attribute.
    540      */
    541     public static final int CONFIG_LAYOUT_DIRECTION = 0x2000;
    542     /**
    543      * Bit in {@link #configChanges} that indicates that the activity
    544      * can itself handle changes to the font scaling factor.  Set from the
    545      * {@link android.R.attr#configChanges} attribute.  This is
    546      * not a core resource configuration, but a higher-level value, so its
    547      * constant starts at the high bits.
    548      */
    549     public static final int CONFIG_FONT_SCALE = 0x40000000;
    550 
    551     /** @hide
    552      * Unfortunately the constants for config changes in native code are
    553      * different from ActivityInfo. :(  Here are the values we should use for the
    554      * native side given the bit we have assigned in ActivityInfo.
    555      */
    556     public static int[] CONFIG_NATIVE_BITS = new int[] {
    557         Configuration.NATIVE_CONFIG_MNC,                    // MNC
    558         Configuration.NATIVE_CONFIG_MCC,                    // MCC
    559         Configuration.NATIVE_CONFIG_LOCALE,                 // LOCALE
    560         Configuration.NATIVE_CONFIG_TOUCHSCREEN,            // TOUCH SCREEN
    561         Configuration.NATIVE_CONFIG_KEYBOARD,               // KEYBOARD
    562         Configuration.NATIVE_CONFIG_KEYBOARD_HIDDEN,        // KEYBOARD HIDDEN
    563         Configuration.NATIVE_CONFIG_NAVIGATION,             // NAVIGATION
    564         Configuration.NATIVE_CONFIG_ORIENTATION,            // ORIENTATION
    565         Configuration.NATIVE_CONFIG_SCREEN_LAYOUT,          // SCREEN LAYOUT
    566         Configuration.NATIVE_CONFIG_UI_MODE,                // UI MODE
    567         Configuration.NATIVE_CONFIG_SCREEN_SIZE,            // SCREEN SIZE
    568         Configuration.NATIVE_CONFIG_SMALLEST_SCREEN_SIZE,   // SMALLEST SCREEN SIZE
    569         Configuration.NATIVE_CONFIG_DENSITY,                // DENSITY
    570         Configuration.NATIVE_CONFIG_LAYOUTDIR,              // LAYOUT DIRECTION
    571     };
    572     /** @hide
    573      * Convert Java change bits to native.
    574      */
    575     public static int activityInfoConfigToNative(int input) {
    576         int output = 0;
    577         for (int i=0; i<CONFIG_NATIVE_BITS.length; i++) {
    578             if ((input&(1<<i)) != 0) {
    579                 output |= CONFIG_NATIVE_BITS[i];
    580             }
    581         }
    582         return output;
    583     }
    584 
    585     /**
    586      * @hide
    587      * Unfortunately some developers (OpenFeint I am looking at you) have
    588      * compared the configChanges bit field against absolute values, so if we
    589      * introduce a new bit they break.  To deal with that, we will make sure
    590      * the public field will not have a value that breaks them, and let the
    591      * framework call here to get the real value.
    592      */
    593     public int getRealConfigChanged() {
    594         return applicationInfo.targetSdkVersion < android.os.Build.VERSION_CODES.HONEYCOMB_MR2
    595                 ? (configChanges | ActivityInfo.CONFIG_SCREEN_SIZE
    596                         | ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE)
    597                 : configChanges;
    598     }
    599 
    600     /**
    601      * Bit mask of kinds of configuration changes that this activity
    602      * can handle itself (without being restarted by the system).
    603      * Contains any combination of {@link #CONFIG_FONT_SCALE},
    604      * {@link #CONFIG_MCC}, {@link #CONFIG_MNC},
    605      * {@link #CONFIG_LOCALE}, {@link #CONFIG_TOUCHSCREEN},
    606      * {@link #CONFIG_KEYBOARD}, {@link #CONFIG_NAVIGATION},
    607      * {@link #CONFIG_ORIENTATION}, {@link #CONFIG_SCREEN_LAYOUT} and
    608      * {@link #CONFIG_LAYOUT_DIRECTION}.  Set from the {@link android.R.attr#configChanges}
    609      * attribute.
    610      */
    611     public int configChanges;
    612 
    613     /**
    614      * The desired soft input mode for this activity's main window.
    615      * Set from the {@link android.R.attr#windowSoftInputMode} attribute
    616      * in the activity's manifest.  May be any of the same values allowed
    617      * for {@link android.view.WindowManager.LayoutParams#softInputMode
    618      * WindowManager.LayoutParams.softInputMode}.  If 0 (unspecified),
    619      * the mode from the theme will be used.
    620      */
    621     public int softInputMode;
    622 
    623     /**
    624      * The desired extra UI options for this activity and its main window.
    625      * Set from the {@link android.R.attr#uiOptions} attribute in the
    626      * activity's manifest.
    627      */
    628     public int uiOptions = 0;
    629 
    630     /**
    631      * Flag for use with {@link #uiOptions}.
    632      * Indicates that the action bar should put all action items in a separate bar when
    633      * the screen is narrow.
    634      * <p>This value corresponds to "splitActionBarWhenNarrow" for the {@link #uiOptions} XML
    635      * attribute.
    636      */
    637     public static final int UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW = 1;
    638 
    639     /**
    640      * If defined, the activity named here is the logical parent of this activity.
    641      */
    642     public String parentActivityName;
    643 
    644     public ActivityInfo() {
    645     }
    646 
    647     public ActivityInfo(ActivityInfo orig) {
    648         super(orig);
    649         theme = orig.theme;
    650         launchMode = orig.launchMode;
    651         permission = orig.permission;
    652         taskAffinity = orig.taskAffinity;
    653         targetActivity = orig.targetActivity;
    654         flags = orig.flags;
    655         screenOrientation = orig.screenOrientation;
    656         configChanges = orig.configChanges;
    657         softInputMode = orig.softInputMode;
    658         uiOptions = orig.uiOptions;
    659         parentActivityName = orig.parentActivityName;
    660         maxRecents = orig.maxRecents;
    661     }
    662 
    663     /**
    664      * Return the theme resource identifier to use for this activity.  If
    665      * the activity defines a theme, that is used; else, the application
    666      * theme is used.
    667      *
    668      * @return The theme associated with this activity.
    669      */
    670     public final int getThemeResource() {
    671         return theme != 0 ? theme : applicationInfo.theme;
    672     }
    673 
    674     private String persistableModeToString() {
    675         switch(persistableMode) {
    676             case PERSIST_ROOT_ONLY: return "PERSIST_ROOT_ONLY";
    677             case PERSIST_NEVER: return "PERSIST_NEVER";
    678             case PERSIST_ACROSS_REBOOTS: return "PERSIST_ACROSS_REBOOTS";
    679             default: return "UNKNOWN=" + persistableMode;
    680         }
    681     }
    682 
    683     public void dump(Printer pw, String prefix) {
    684         super.dumpFront(pw, prefix);
    685         if (permission != null) {
    686             pw.println(prefix + "permission=" + permission);
    687         }
    688         pw.println(prefix + "taskAffinity=" + taskAffinity
    689                 + " targetActivity=" + targetActivity
    690                 + " persistableMode=" + persistableModeToString());
    691         if (launchMode != 0 || flags != 0 || theme != 0) {
    692             pw.println(prefix + "launchMode=" + launchMode
    693                     + " flags=0x" + Integer.toHexString(flags)
    694                     + " theme=0x" + Integer.toHexString(theme));
    695         }
    696         if (screenOrientation != SCREEN_ORIENTATION_UNSPECIFIED
    697                 || configChanges != 0 || softInputMode != 0) {
    698             pw.println(prefix + "screenOrientation=" + screenOrientation
    699                     + " configChanges=0x" + Integer.toHexString(configChanges)
    700                     + " softInputMode=0x" + Integer.toHexString(softInputMode));
    701         }
    702         if (uiOptions != 0) {
    703             pw.println(prefix + " uiOptions=0x" + Integer.toHexString(uiOptions));
    704         }
    705         super.dumpBack(pw, prefix);
    706     }
    707 
    708     public String toString() {
    709         return "ActivityInfo{"
    710             + Integer.toHexString(System.identityHashCode(this))
    711             + " " + name + "}";
    712     }
    713 
    714     public int describeContents() {
    715         return 0;
    716     }
    717 
    718     public void writeToParcel(Parcel dest, int parcelableFlags) {
    719         super.writeToParcel(dest, parcelableFlags);
    720         dest.writeInt(theme);
    721         dest.writeInt(launchMode);
    722         dest.writeString(permission);
    723         dest.writeString(taskAffinity);
    724         dest.writeString(targetActivity);
    725         dest.writeInt(flags);
    726         dest.writeInt(screenOrientation);
    727         dest.writeInt(configChanges);
    728         dest.writeInt(softInputMode);
    729         dest.writeInt(uiOptions);
    730         dest.writeString(parentActivityName);
    731         dest.writeInt(persistableMode);
    732         dest.writeInt(maxRecents);
    733     }
    734 
    735     public static final Parcelable.Creator<ActivityInfo> CREATOR
    736             = new Parcelable.Creator<ActivityInfo>() {
    737         public ActivityInfo createFromParcel(Parcel source) {
    738             return new ActivityInfo(source);
    739         }
    740         public ActivityInfo[] newArray(int size) {
    741             return new ActivityInfo[size];
    742         }
    743     };
    744 
    745     private ActivityInfo(Parcel source) {
    746         super(source);
    747         theme = source.readInt();
    748         launchMode = source.readInt();
    749         permission = source.readString();
    750         taskAffinity = source.readString();
    751         targetActivity = source.readString();
    752         flags = source.readInt();
    753         screenOrientation = source.readInt();
    754         configChanges = source.readInt();
    755         softInputMode = source.readInt();
    756         uiOptions = source.readInt();
    757         parentActivityName = source.readString();
    758         persistableMode = source.readInt();
    759         maxRecents = source.readInt();
    760     }
    761 }
    762