Android MediaPlayer 播放各种来源的音频文件，特效控制

MediaPlayer通过资源ID播放Raw目录下音频资源文件:

MediaPlayer mMediaPlayer;
mMediaPlayer  = MediaPlayer.create(this, R.raw.bomb); //
mMediaPlayer.setLooping(true); // 设置循环播放
mMediaPlayer.start(); // 开始播放
mMediaPlayer.stop(); // 停止播放

// 设置播放下一首音频的代码
mMediaPlayer.reset(); // reset MediaPlayer
try {
mMediaPlayer.setDataSource("/mnt/sdcard/next.mp3"); // 指定要播放的音频文件
mMediaPlayer.prepare(); // MediaPlayer 预处理
mMediaPlayer.start(); // 开始播放
mMediaPlayer.stop();  // 停止播放
} catch (IOException e) {
e.printStackTrace();
}

MediaPlayer播放Asset目录下音频文件：

AssetManager assetManager = getAssets();
try {
AssetFileDescriptor afd = assetManager.openFd("one.mp3");
MediaPlayer mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(afd.getFileDescriptor()
, afd.getStartOffset()
, afd.getLength());
mediaPlayer.prepare();
mediaPlayer.start();
mediaPlayer.stop();
} catch (IOException e) {
e.printStackTrace();
}

MediaPlayer播放外部存储器上的音频文件：

try {
mMediaPlayer.setDataSource("/mnt/sdcard/next.mp3"); // 指定要播放的音频文件
mMediaPlayer.prepare(); // MediaPlayer 预处理
mMediaPlayer.start(); // 开始播放
mMediaPlayer.stop();  // 停止播放
} catch (IOException e) {
e.printStackTrace();
}

MediaPlayer播放来自网络的音频文件：

Uri uri = Uri.parse("http://192.168.8.88/audio/abc.mp3");
MediaPlayer mediaPlayer = new MediaPlayer();
try {
mediaPlayer.setDataSource(this, uri); // 根据URI装载音频文件
mediaPlayer.prepare();
mediaPlayer.start();
} catch (IOException e) {
e.printStackTrace();
}

MediaPlayer 事件监听器：

mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {

}
});

mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
return false;
}
});

mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {

}
});

mMediaPlayer.setOnSeekCompleteListener(new MediaPlayer.OnSeekCompleteListener() {
@Override
public void onSeekComplete(MediaPlayer mp) {

}
});

mMediaPlayer.setOnBufferingUpdateListener(new MediaPlayer.OnBufferingUpdateListener() {
@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {

}
});

mMediaPlayer.setOnInfoListener(new MediaPlayer.OnInfoListener() {
@Override
public boolean onInfo(MediaPlayer mp, int what, int extra) {
return false;
}
});

音频特效控制：