I have code that plays mp3 file from assets directory:
我有从资产目录播放mp3文件的代码:
MediaPlayer mediaPlayer = new MediaPlayer();
descriptor = context.getAssets().openFd("beep.mp3");
mediaPlayer.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setVolume(soundLevel, soundLevel);
descriptor.close();
mediaPlayer.setLooping(false);
mediaPlayer.prepare();
mediaPlayer.start();
This code was working fine on every device and every Android version. Until after Android L preview came available. mediaPlayer.prepare();
throws IllegalStateException on Nexus 5 running Android L.
这段代码在每个设备和Android版本上运行良好。直到Android L预览之后。mediaPlayer.prepare();在Nexus 5运行Android L时抛出IllegalStateException。
Emulator version of Android L works completely fine, I don't own Nexus 5 so can't say what exactly is causing the issue. I am thinking about descriptor.close()
line before prepare()
called, but not sure.
Android L的仿真版完全没问题,我没有Nexus 5,所以说不出到底是什么引起了这个问题。我正在考虑描述符.close()行,然后准备()调用,但不确定。
1 个解决方案
#1
0
public void myBeep() {
try {
if (m.isPlaying()) {
m.stop();
m.release();
m = new MediaPlayer();
}
AssetFileDescriptor descriptor = getAssets().openFd("beep.mp3");
m.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());
descriptor.close();
m.prepare();
m.setVolume(1f, 1f);
m.setLooping(true);
m.start();
} catch (Exception e) {
e.printStackTrace();
}
};
#1
0
public void myBeep() {
try {
if (m.isPlaying()) {
m.stop();
m.release();
m = new MediaPlayer();
}
AssetFileDescriptor descriptor = getAssets().openFd("beep.mp3");
m.setDataSource(descriptor.getFileDescriptor(), descriptor.getStartOffset(), descriptor.getLength());
descriptor.close();
m.prepare();
m.setVolume(1f, 1f);
m.setLooping(true);
m.start();
} catch (Exception e) {
e.printStackTrace();
}
};