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[英]how to set two volume control in media player for two simultaneously playing sound in android
[英]How to adjust the volume of two media players simultaneously?
我同時運行兩個媒體播放器來播放兩種不同的聲音,一種是錄音,第二種是音樂。 我通過兩個搜索欄控制兩者的音量。 問題是,一次控制一個媒體播放器的音量。 釋放一個媒體播放器時,可以調節另一媒體播放器的音量。 我想同時進行調整這是我的實現。
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();
}
在搜尋欄中,我正在使用音頻管理器來調整音量。 在音樂搜尋欄中,可以通過以下方式調節音量:
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, i, 0); // i = seekbar progress
用於更改錄制搜尋欄音量的代碼是,
audioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, i, 0); // i = seekbar progress
這是同時播放2個媒體播放器並通過搜索欄控制其音量的解決方案。
創建變量
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";
初始化和啟動媒體播放器的功能:
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();
}
}
創建SeekBarChangeListener以獲取當前進度。
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) {
}
};
活動中或片段中
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;
}
});
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