| java.lang.Object | |
| ↳ | android.media.MediaActionSound |
A class for producing sounds that match those produced by various actions taken by the media and camera APIs.
Use this class to play an appropriate camera operation sound when
implementing a custom still or video recording mechanism (through the Camera
preview callbacks with Camera.setPreviewCallback, or through GPU processing with Camera.setPreviewTexture, for
example), or when implementing some other camera-like function in your
application.
There is no need to play sounds when using
Camera.takePicture or
MediaRecorder for still images or video, respectively,
as the Android framework will play the appropriate sounds when needed for
these calls.
| Constants | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| int | FOCUS_COMPLETE | A sound to indicate that focusing has completed. | |||||||||
| int | SHUTTER_CLICK | The sound used by
Camera.takePicture to
indicate still image capture. |
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| int | START_VIDEO_RECORDING | The sound used by
MediaRecorder.start() to
indicate the start of video recording. |
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| int | STOP_VIDEO_RECORDING | The sound used by
MediaRecorder.stop() to
indicate the end of video recording. |
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| Public Constructors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Construct a new MediaActionSound instance.
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| Public Methods | |||||||||||
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Preload a predefined platform sound to minimize latency when the sound is
played later by
play(int). | |||||||||||
Play one of the predefined platform sounds for media actions. | |||||||||||
Free up all audio resources used by this MediaActionSound instance.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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A sound to indicate that focusing has completed. Because deciding when this occurs is application-dependent, this sound is not used by any methods in the media or camera APIs.
The sound used by
Camera.takePicture to
indicate still image capture.
The sound used by
MediaRecorder.start() to
indicate the start of video recording.
The sound used by
MediaRecorder.stop() to
indicate the end of video recording.
Construct a new MediaActionSound instance. Only a single instance is needed for playing any platform media action sound; you do not need a separate instance for each sound type.
Preload a predefined platform sound to minimize latency when the sound is
played later by play(int).
| soundName | The type of sound to preload, selected from SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, or STOP_VIDEO_RECORDING. |
|---|
Play one of the predefined platform sounds for media actions.
Use this method to play a platform-specific sound for various media
actions. The sound playback is done asynchronously, with the same
behavior and content as the sounds played by
Camera.takePicture,
MediaRecorder.start, and
MediaRecorder.stop.
Using this method makes it easy to match the default device sounds when recording or capturing data through the preview callbacks, or when implementing custom camera-like features in your application.
If the sound has not been loaded by load(int) before calling play,
play will load the sound at the cost of some additional latency before
sound playback begins.
| soundName | The type of sound to play, selected from SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, or STOP_VIDEO_RECORDING. |
|---|
Free up all audio resources used by this MediaActionSound instance. Do not call any other methods on a MediaActionSound instance after calling release().