Android无法播放res / raw文件夹中的wav文件

Question

I'm building an android app. And I just want to play a wav file if it exists in my /res/raw folder. The following code does not work because the f.exists() always evaluates to false:

    String filePathString = "android.resource://"+_context.getPackageName()+"/res/raw/oldphone_mono.wav";
    File f = new File(filePathString);

    java.io.InputStream inputStream = _context.getResources().openRawResource(com.hello20.R.raw.oldphone_mono);


    if(f.exists()) {

        Uri ringUri = Uri.parse(filePathString);

        _ring = new MediaPlayer();
        _ring.setDataSource(_context, ringUri);

        final AudioManager audioManager = (AudioManager) _context.getSystemService(Context.AUDIO_SERVICE);
        if (audioManager.getStreamVolume(AudioManager.STREAM_RING) != 0) {
            _ring.setAudioStreamType(AudioManager.STREAM_RING);
            _ring.setLooping(true);
            _ring.prepare();
            _ring.start();
        }

What else should I do to make this work?

Answer 1

Try to load wav by other way:

 _ring=MediaPlayer.create(_context,R.raw.oldphone_mono);
 _ring.start();
 _ring.setLooping( true );

Comment 1

You don't need in my case to use _ring.prepare(); . MediaPlayer.create takes care about

Comment 2

Further, since you load wav resource from raw, you don't need if(f.exists()) statemant