WindowProperties

public static final @NonNull String PROPERTY_ACTIVITY_EMBEDDING_ALLOW_SYSTEM_OVERRIDE

Application-level PackageManager.Property tag that specifies whether OEMs are permitted to provide activity embedding split-rule configurations on behalf of the app.

If true, the system is permitted to override the app's windowing behavior and implement activity embedding split rules, such as displaying activities adjacent to each other. A system override informs the app that the activity embedding APIs are disabled so the app will not provide its own activity embedding rules, which would conflict with the system's rules.

If false, the system is not permitted to override the windowing behavior of the app. Set the property to false if the app provides its own activity embedding split rules, or if you want to prevent the system override for any other reason.

The default value is false.

Note: Refusal to permit the system override is not enforceable. OEMs can override the app's activity embedding implementation whether or not this property is specified and set to false. The property is, in effect, a hint to OEMs.

OEMs can implement activity embedding on any API level. The best practice for apps is to always explicitly set this property in the app manifest file regardless of targeted API level rather than rely on the default value.

Syntax:

<application>
<property
    android:name="android.window.PROPERTY_ACTIVITY_EMBEDDING_ALLOW_SYSTEM_OVERRIDE"
    android:value="true|false"/>
</application>

public static final @NonNull String PROPERTY_ACTIVITY_EMBEDDING_SPLITS_ENABLED

Application level PackageManager tag that an app must specify to inform the system that the app is ActivityEmbedding split feature enabled. In other words, the ActivityEmbedding splits feature cannot be used if the app has no property set.

With this property, the system could provide custom behaviors for the apps that have ActivityEmbedding split feature enabled. For example, the fixed-portrait orientation requests of the activities could be ignored by the system in order to provide seamless ActivityEmbedding split experiences while holding the large-screen devices in landscape mode.

Syntax:

<application>
<property
    android:name="android.window.PROPERTY_ACTIVITY_EMBEDDING_SPLITS_ENABLED"
    android:value="true|false"/>
</application>

public static final @NonNull String PROPERTY_COMPAT_ALLOW_IGNORING_ORIENTATION_REQUEST_WHEN_LOOP_DETECTED

Application level PackageManager tag for an app to inform the system that the app can be opted-out from the compatibility treatment that avoids android.app.Activity.setRequestedOrientation loops. The loop can be trigerred when ignoreOrientationRequest display setting is enabled on the device (enables compatibility mode for fixed orientation, see Enhanced letterboxing for more details). or by the landscape natural orientation of the device.

The system could ignore android.app.Activity.setRequestedOrientation call from an app if both of the following conditions are true:

• Activity has requested orientation more than 2 times within 1-second timer

• Activity is not letterboxed for fixed orientation

Setting this property to false informs the system that the app must be opted-out from the compatibility treatment even if the device manufacturer has opted the app into the treatment.

Not setting this property at all, or setting this property to true has no effect.

Syntax:

<application>
  <property
    android:name="android.window.PROPERTY_COMPAT_ALLOW_IGNORING_ORIENTATION_REQUEST_WHEN_LOOP_DETECTED"
    android:value="false" />
</application>

public static final @NonNull String PROPERTY_COMPAT_ALLOW_MIN_ASPECT_RATIO_OVERRIDE

Application level PackageManager tag for an app to inform the system that the app should be opted-out from the compatibility override that changes the min aspect ratio.

When this compat override is enabled the min aspect ratio given in the app's manifest can be overridden by the device manufacturer using their discretion to improve display compatibility unless the app's manifest value is higher. This treatment will also apply if no min aspect ratio value is provided in the manifest. These treatments can apply only in specific cases (e.g. device is in portrait) or each time the app is displayed on screen.

Setting this property to false informs the system that the app must be opted-out from the compatibility treatment even if the device manufacturer has opted the app into the treatment.

Not setting this property at all, or setting this property to true has no effect.

Syntax:

<application>
  <property
    android:name="android.window.PROPERTY_COMPAT_ALLOW_MIN_ASPECT_RATIO_OVERRIDE"
    android:value="false" />
</application>

public static final @NonNull String PROPERTY_COMPAT_ALLOW_RESIZEABLE_ACTIVITY_OVERRIDES

Application level PackageManager tag for an app to inform the system that the app should be opted-out from the compatibility overrides that change the resizability of the app.

When these compat overrides are enabled they force the packages they are applied to to be resizable / unresizable. If the app is forced to be resizable this won't change whether the app can be put into multi-windowing mode, but allow the app to resize without going into size-compat mode when the window container resizes, such as display size change or screen rotation.

Setting this property to false informs the system that the app must be opted-out from the compatibility treatment even if the device manufacturer has opted the app into the treatment.

Not setting this property at all, or setting this property to true has no effect.

Syntax:

<application>
  <property
    android:name="android.window.PROPERTY_COMPAT_ALLOW_RESIZEABLE_ACTIVITY_OVERRIDES"
    android:value="false" />
</application>

public static final @NonNull String PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_FULLSCREEN_OVERRIDE

Application-level PackageManager tag that (when set to false) informs the system the app has opted out of the full-screen option of the user aspect ratio compatibility override settings. (For background information about the user aspect ratio compatibility override, see PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_OVERRIDE.)

When users apply the full-screen compatibility override, the orientation of the activity is forced to SCREEN_ORIENTATION_USER.

The user override aims to improve the app experience on devices that have the ignore orientation request display setting enabled by OEMs (enables compatibility mode for fixed orientation on Android 12 (API level 31) or higher; see Large screen compatibility mode for more details).

To opt out of the full-screen option of the user aspect ratio compatibility override, add this property to your app manifest and set the value to false. Your app will have full-screen option removed from the list of user aspect ratio override options in device settings, and users will not be able to apply full-screen override to your app.

Note: If PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_OVERRIDE is false, this property has no effect.

Not setting this property at all, or setting this property to true has no effect.

Syntax:

<application>
  <property
    android:name="android.window.PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_FULLSCREEN_OVERRIDE"
    android:value="false" />
</application>

public static final @NonNull String PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_OVERRIDE

Application-level PackageManager tag that (when set to false) informs the system the app has opted out of the user-facing aspect ratio compatibility override.

The compatibility override enables device users to set the app's aspect ratio or force the app to fill the display regardless of the aspect ratio or orientation specified in the app manifest.

The aspect ratio compatibility override is exposed to users in device settings. A menu in device settings lists all apps that have not opted out of the compatibility override. Users select apps from the menu and set the app aspect ratio on a per-app basis. Typically, the menu is available only on large screen devices.

When users apply the aspect ratio override, the minimum aspect ratio specified in the app manifest is overridden. If users choose a full-screen aspect ratio, the orientation of the activity is forced to SCREEN_ORIENTATION_USER; see PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_FULLSCREEN_OVERRIDE to disable the full-screen option only.

The user override is intended to improve the app experience on devices that have the ignore orientation request display setting enabled by OEMs (enables compatibility mode for fixed orientation on Android 12 (API level 31) or higher; see Large screen compatibility mode for more details).

To opt out of the user aspect ratio compatibility override, add this property to your app manifest and set the value to false. Your app will be excluded from the list of apps in device settings, and users will not be able to override the app's aspect ratio.

Not setting this property at all, or setting this property to true has no effect.

Syntax:

<application>
  <property
    android:name="android.window.PROPERTY_COMPAT_ALLOW_USER_ASPECT_RATIO_OVERRIDE"
    android:value="false" />
</application>