Android 如何同时调整两个媒体播放器的音量?
我同时运行两个媒体播放器来播放两种不同的声音,一种是录音,另一种是音乐。我通过两个Seekbar控制这两个的音量。问题是,一个媒体播放器的音量是一次控制的。释放一个媒体播放器时,可以调整其他媒体播放器的音量。我想同时调整 这是我的实现Android 如何同时调整两个媒体播放器的音量?,android,audio,android-audiomanager,Android,Audio,Android Audiomanager,我同时运行两个媒体播放器来播放两种不同的声音,一种是录音,另一种是音乐。我通过两个Seekbar控制这两个的音量。问题是,一个媒体播放器的音量是一次控制的。释放一个媒体播放器时,可以调整其他媒体播放器的音量。我想同时调整 这是我的实现 public void setMediaPLayers() { mediaPlayer = new MediaPlayer(); //TO PLAY VOICE RECORDING mediaPlayer.setAudioStreamType(A
public void setMediaPLayers() {
mediaPlayer = new MediaPlayer(); //TO PLAY VOICE RECORDING
mediaPlayer.setAudioStreamType(AudioManager.STREAM_VOICE_CALL);
try {
mediaPlayer.setDataSource(AudioSavePathInDevice); //VOICE RECORDING FILE PATH
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IOException e) {
e.printStackTrace();
}
mediaPlayer2 = MediaPlayer.create(getActivity(), R.raw.sunnysideup); //FOR MUSIC FILE
mediaPlayer2.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer2.start();
}
在seekbars中,我使用音频管理器调整音量。在music seekbar中,音量通过
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, i, 0); // i = seekbar progress
更改seekbar记录音量的代码为
audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, i, 0); // i = seekbar progress
以下是同时播放两台媒体播放器并通过Seekbar控制其音量的解决方案 创建变量
MediaPlayer mpOne = null;
MediaPlayer mpTwo = null;
SeekBar seekBarOne, seekBarTwo;
//Path to mp3 file stored in device
String FILE_PATH_ONE = Environment.getExternalStorageDirectory().getPath() + "/music_one.mp3";
String FILE_PATH_TWO = Environment.getExternalStorageDirectory().getPath() + "/music_two.mp3";
初始化和启动媒体播放器的功能:
public void setMediaPlayers() {
mpOne = new MediaPlayer();
mpTwo = new MediaPlayer();
try {
mpOne.setDataSource(FILE_PATH_ONE);
mpTwo.setDataSource(FILE_PATH_TWO);
mpOne.prepare();
mpTwo.prepare();
mpOne.start();
mpTwo.start();
} catch (IOException e) {
e.printStackTrace();
}
}
创建SeekBarChangeListener以获取当前进度
SeekBar.OnSeekBarChangeListener seekBarOneListener = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
//Lets assume, seekbar's maximum progress is 10.
//i is the progress of seekbar between 0 to 10.
float volume = i * 0.10f;
//Set the volume if media player is not null
if (null != mpOne)
//volume is the float number between 0.0 and 1.0
mpOne.setVolume(volume, volume);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
};
SeekBar.OnSeekBarChangeListener seekBarTwoListener = new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
//Lets assume, seekbar's maximum progress is 10.
//i is the progress of seekbar between 0 to 10.
float volume = i * 0.10f;
//Set the volume if media player is not null
if (null != mpTwo)
//volume is the float number between 0.0 and 1.0
mpTwo.setVolume(volume, volume);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
};
在活动或片断中
seekBarOne = (SeekBar) v.findViewById(R.id.seekBar1);
seekBarTwo = (SeekBar) v.findViewById(R.id.seekBar2);
seekBarOne.setOnSeekBarChangeListener(seekBarOneListener);
seekBarTwo.setOnSeekBarChangeListener(seekBarTwoListener);
//Start media players
setMediaPlayers();
//Completion listeners for releasing media players on completion.
mpOne.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mpOne.reset();
mpOne.release();
mpOne = null;
}
});
mpTwo.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mpTwo.reset();
mpTwo.release();
mpTwo = null;
}
});