IT. Expert System.

public class MediaActionSound
extends Object

• Field Summary

  Fields

  Modifier and Type	Field and Description
  static int	FOCUS_COMPLETE A sound to indicate that focusing has completed.
  static int	SHUTTER_CLICK The sound used by Camera.takePicture to indicate still image capture.
  static int	START_VIDEO_RECORDING The sound used by MediaRecorder.start() to indicate the start of video recording.
  static int	STOP_VIDEO_RECORDING The sound used by MediaRecorder.stop() to indicate the end of video recording.

• Constructor Summary

  Constructors

  Constructor and Description
  MediaActionSound() Construct a new MediaActionSound instance.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	load(int soundName) Preload a predefined platform sound to minimize latency when the sound is played later by play(int).
  void	play(int soundName) Play one of the predefined platform sounds for media actions.
  void	release() Free up all audio resources used by this MediaActionSound instance.

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Field Detail

  • SHUTTER_CLICK

    public static final int SHUTTER_CLICK

    The sound used by Camera.takePicture to indicate still image capture.

    See Also:

    play(int), Constant Field Values

  • FOCUS_COMPLETE

    public static final int FOCUS_COMPLETE

    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.

    See Also:

    play(int), Constant Field Values

  • START_VIDEO_RECORDING

    public static final int START_VIDEO_RECORDING

    The sound used by MediaRecorder.start() to indicate the start of video recording.

    See Also:

    play(int), Constant Field Values

  • STOP_VIDEO_RECORDING

    public static final int STOP_VIDEO_RECORDING

    The sound used by MediaRecorder.stop() to indicate the end of video recording.

    See Also:

    play(int), Constant Field Values

• Constructor Detail

  • MediaActionSound

    public MediaActionSound()

    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.

• Method Detail

  • load

    public void load(int soundName)

    Preload a predefined platform sound to minimize latency when the sound is played later by play(int).

    Parameters:

    soundName - The type of sound to preload, selected from SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, or STOP_VIDEO_RECORDING.

    See Also:

    play(int), SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, STOP_VIDEO_RECORDING

  • play

    public void play(int soundName)

    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.

    Parameters:

    soundName - The type of sound to play, selected from SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, or STOP_VIDEO_RECORDING.

    See Also:

    Camera.takePicture(android.hardware.Camera.ShutterCallback, android.hardware.Camera.PictureCallback, android.hardware.Camera.PictureCallback), MediaRecorder, SHUTTER_CLICK, FOCUS_COMPLETE, START_VIDEO_RECORDING, STOP_VIDEO_RECORDING

  • release

    public void release()

    Free up all audio resources used by this MediaActionSound instance. Do not call any other methods on a MediaActionSound instance after calling release().