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android里面播放声音的方法---执行某项操作发出滴的一声

2015-10-23 09:23 555 查看

/****************提示声音震动发送成功之后显示**********/

private MediaPlayer mediaPlayer;

private boolean playBeep;

private static final float BEEP_VOLUME = 0.10f;

private boolean vibrate;

private void initBeepSound() {

if (playBeep && mediaPlayer == null) {

// The volume on STREAM_SYSTEM is not adjustable, and users found it

// too loud,

// so we now play on the music stream.

((Activity) context).setVolumeControlStream(AudioManager.STREAM_MUSIC);

mediaPlayer = new MediaPlayer();

mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

mediaPlayer.setOnCompletionListener(beepListener);

AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);

try {

mediaPlayer.setDataSource(file.getFileDescriptor(),file.getStartOffset(), file.getLength());

file.close();

mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);

mediaPlayer.prepare();

} catch (IOException e) {

mediaPlayer = null;

}

}

}

private final OnCompletionListener beepListener = new OnCompletionListener() {

public void onCompletion(MediaPlayer mediaPlayer) {

mediaPlayer.seekTo(0);

}

};

private static final long VIBRATE_DURATION = 200L;

private void playBeepSoundAndVibrate() {

if (playBeep && mediaPlayer != null) {

mediaPlayer.start();

}

if (vibrate) {

Vibrator vibrator = (Vibrator) context.getSystemService(context.VIBRATOR_SERVICE);

vibrator.vibrate(VIBRATE_DURATION);

}

}

private void initVoice() {

// TODO Auto-generated method stub

playBeep = true;

AudioManager audioService = (AudioManager)context.getSystemService(context.AUDIO_SERVICE);

if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {

playBeep = false;

}

initBeepSound();

vibrate = true;

}

/*************************************************/

/***************播放声音的另外一种方法*****************/

private SoundPool soundPool;

private int music;

/**哪里要调用就执行这行代码**/

public void play_voice() {

soundPool.play(music, 1, 1, 0, 0, 1);

}

/**播放声音初始化*/

public void initVoice2(){

soundPool= new SoundPool(10, AudioManager.STREAM_SYSTEM, 5);//第一个参数为同时播放数据流的最大个数，第二数据流类型，第三为声音质量

music = soundPool.load(context, R.raw.beep, 1); //把你的声音素材放到res/raw里，第2个参数即为资源文件，第3个为音乐的优先级

}

/*********************************************/

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