How to attach MediaPlayer with SurfaceView in android?

问题

I'm building video player with android media player object. i'm able to hear the audio but the video does not appear on surfaceView. here is my code

public class PlayerActivity extends Activity implements SurfaceHolder.Callback {
    String path;
    private MediaPlayer mp;
    private SurfaceView mPreview;
    private SurfaceHolder holder;
    boolean pausing = false;
    public static String filepath;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        getWindow().setFormat(PixelFormat.UNKNOWN);
        mPreview = (SurfaceView)findViewById(R.id.surfaceView);
        holder = mPreview.getHolder();
        holder.setFixedSize(176, 144);
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        mp = new MediaPlayer();

        mp.setDisplay(holder);
        try {
            Intent intent = getIntent();
            Uri fileuri = intent.getData();
            filepath=fileuri.getPath();
        } catch(Exception e) {}

        try {
            mp.setDataSource(filepath);
            mp.prepare();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        mp.start();
    }
}

target is android 2.3 and above. how to fix it please help me..

回答1:

finally i fixed it myself. just called the mp.setDisplay(holder); inside the surfaceCreated() function. and the final code is

public class PlayerActivity extends Activity implements SurfaceHolder.Callback {
    String path;
    private MediaPlayer mp;
    private SurfaceView mPreview;
    private SurfaceHolder holder;
    boolean pausing = false;
    public static String filepath;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        getWindow().setFormat(PixelFormat.UNKNOWN);
        mPreview = (SurfaceView)findViewById(R.id.surfaceView);
        holder = mPreview.getHolder();
        holder.setFixedSize(800, 480);
        holder.addCallback(this);
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        mp = new MediaPlayer();


        try{
            Intent intent = getIntent();

            Uri fileuri = intent.getData();
            filepath=fileuri.getPath();
        }catch(Exception e){}


    }
    protected void onPause(){
        super.onPause();
        mp.release();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
        // TODO Auto-generated method stub

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        // TODO Auto-generated method stub
        mp.setDisplay(holder);
        play();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        // TODO Auto-generated method stub

    }
    void play(){
        try {
            mp.setDataSource(filepath);

            mp.prepare(); 

        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        mp.start();
    }
}

回答2:

It is not working for me, throwing error illegal state exception in surfaceCreated() method at line mp.setDisplay(holder);

Declare mp.setDisplay(holder) as given below :

@Override
public void surfaceCreated(SurfaceHolder holder) 
{  
    mediaPlayer.setDataSource(this,uri);
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mediaPlayer.prepare(); 
    mp.setDisplay(holder);
    mp.start;
}

来源：https://stackoverflow.com/questions/16700587/how-to-attach-mediaplayer-with-surfaceview-in-android