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调用android api播放视频，使用MediaPlayer

上文调用android api播放视频使用的是VideoView，是比较高层的API播放视频，比较简明，但定制性方面不如使用MediaPlayer。

参考的示例是android SDK示例代码：

源代码：

package com.easymorse;

import java.io.IOException;

import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class MPlayerActivity extends Activity implements
        OnBufferingUpdateListener, OnCompletionListener,
        MediaPlayer.OnPreparedListener, SurfaceHolder.Callback {

    private MediaPlayer mediaPlayer;

    private SurfaceView surfaceView;

    private SurfaceHolder surfaceHolder;

    private int videoWidth;

    private int videoHeight;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        this.surfaceView = (SurfaceView) this.findViewById(R.id.surface);
        this.surfaceHolder = this.surfaceView.getHolder();
        this.surfaceHolder.addCallback(this);
        this.surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        Log.v("mplayer", ">>>create ok.");
    }

    private void playVideo() throws IllegalArgumentException,
            IllegalStateException, IOException {
        this.mediaPlayer = new MediaPlayer();
        this.mediaPlayer
                .setDataSource("http://sayedhashimi.com/downloads/android/movie.mp4");
        this.mediaPlayer.setDisplay(this.surfaceHolder);
        this.mediaPlayer.prepare();
        this.mediaPlayer.setOnBufferingUpdateListener(this);
        this.mediaPlayer.setOnPreparedListener(this);
        this.mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        Log.v("mplayer", ">>>play video");
    }

    @Override
    public void onBufferingUpdate(MediaPlayer mp, int percent) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onCompletion(MediaPlayer mp) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onPrepared(MediaPlayer mp) {
        this.videoWidth = this.mediaPlayer.getVideoWidth();
        this.videoHeight = this.mediaPlayer.getVideoHeight();

        if (this.videoHeight != 0 && this.videoWidth != 0) {
            this.surfaceHolder.setFixedSize(this.videoWidth, this.videoHeight);
            this.mediaPlayer.start();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width,
            int height) {
        Log.v("mplayer", ">>>surface changed");
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        try {
            this.playVideo();
        } catch (Exception e) {
            Log.e("mplayer", ">>>error", e);
        }
        Log.v("mplayer", ">>>surface created");
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        Log.v("mplayer", ">>>surface destroyed");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (this.mediaPlayer != null) {
            this.mediaPlayer.release();
            this.mediaPlayer = null;
        }
    }
}

源代码见：

http://easymorse.googlecode.com/svn/tags/mplayer-1.0

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