@@ -18,11 +18,11 @@ The table below describes the ability call APIs. For details, see [Ability](../r
**Table 1** Ability call APIs
|API|Description|
|:------|:------|
|startAbilityByCall(want: Want): Promise<Caller>|Obtains the caller interface of the specified ability and, if the specified ability is not running, starts the ability in the background.|
|startAbilityByCall(want: Want): Promise\<Caller>|Obtains the caller interface of the specified ability and, if the specified ability is not running, starts the ability in the background.|
|on(method: string, callback: CaleeCallBack): void|Callback invoked when the callee registers a method.|
|off(method: string): void|Callback invoked when the callee deregisters a method.|
|call(method: string, data: rpc.Sequenceable): Promise<void>|Sends agreed sequenceable data to the callee.|
|callWithResult(method: string, data: rpc.Sequenceable): Promise<rpc.MessageParcel>|Sends agreed sequenceable data to the callee and returns the agreed sequenceable data.|
|call(method: string, data: rpc.Sequenceable): Promise\<void>|Sends agreed sequenceable data to the callee.|
|callWithResult(method: string, data: rpc.Sequenceable): Promise\<rpc.MessageParcel>|Sends agreed sequenceable data to the callee and returns the agreed sequenceable data.|
|release(): void|Releases the caller interface.|
|onRelease(callback: OnReleaseCallBack): void|Registers a callback that is invoked when the caller is disconnected.|
| actionType | [InterruptActionType](#interruptactiontype) | Yes | Returned event type. The value **TYPE_ACTIVATED** means the focus gain event, and **TYPE_INTERRUPT** means the audio interruption event.|
| type | [InterruptType](#interrupttype) | No | Type of the audio interruption event. |
| hint | [InterruptHint](interrupthint) | No | Hint provided along with the audio interruption event. |
| hint | [InterruptHint](#interrupthint) | No | Hint provided along with the audio interruption event. |
| activated | boolean | No | Whether the focus is gained or released. The value **true** means that the focus is gained or released, and **false** means that the focus fails to be gained or released.|
## VolumeEvent<sup>8+</sup>
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@@ -646,7 +657,7 @@ Sets the volume for a stream. This API uses an asynchronous callback to return t
| Promise<void> | Promise used to return the result. If the operation is successful, **undefined** is returned. Otherwise, **error** is returned.|
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> **NOTE**
>
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> The APIs of this module can be used only in the FA model.
> The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
The multimedia subsystem provides a set of simple and easy-to-use APIs for you to access the system and use media resources.
Sets **SurfaceId**. This API uses a callback to return the result.
*Note: **SetDisplaySurface** must be called between the URL setting and the calling of **prepare**. A surface must be set for video streams without audio. Otherwise, the calling of **prepare** fails.
Sets **SurfaceId**. This API uses a promise to return the result.
*Note: **SetDisplaySurface** must be called between the URL setting and the calling of **prepare**. A surface must be set for video streams without audio. Otherwise, the calling of **prepare** fails.
> The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## Modules to Import
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@@ -208,7 +208,7 @@ Shows an action menu. This API uses a callback to return the result asynchronous