Android中使用TextureView播放视频

package com.example.textureviewvideo; 
 
import java.io.File; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.io.OutputStream; 
 
import android.app.Activity; 
import android.content.res.AssetManager; 
import android.graphics.SurfaceTexture; 
import android.media.AudioManager; 
import android.media.MediaPlayer; 
import android.media.MediaPlayer.OnPreparedListener; 
import android.os.Bundle; 
import android.os.Environment; 
import android.util.Log; 
import android.view.Surface; 
import android.view.TextureView; 
import android.view.View; 
import android.view.TextureView.SurfaceTextureListener; 
import android.widget.ImageView; 
 
public class MainActivity extends Activity implements SurfaceTextureListener{ 
// private TextureView textureView; 
  private MediaPlayer mMediaPlayer; 
  private Surface surface; 
   
  private ImageView videoImage; 
   
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    TextureView textureView=(TextureView) findViewById(R.id.textureview); 
    textureView.setSurfaceTextureListener(this);//设置监听函数 重写4个方法 
     
//   textureView=new TextureViewTest(this); 
//   setContentView(textureView); 
    videoImage=(ImageView) findViewById(R.id.video_image); 
  } 
   
  @Override 
  public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width,int height) { 
    System.out.println("onSurfaceTextureAvailable onSurfaceTextureAvailable"); 
    surface=new Surface(surfaceTexture); 
    new PlayerVideo().start();//开启一个线程去播放视频 
  } 
  @Override 
  public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width,int height) { 
    System.out.println("onSurfaceTextureSizeChanged onSurfaceTextureSizeChanged"); 
  } 
   
  @Override 
  public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) { 
    System.out.println("onSurfaceTextureDestroyed onSurfaceTextureDestroyed"); 
    surfaceTexture=null; 
    surface=null; 
    mMediaPlayer.stop(); 
    mMediaPlayer.release(); 
    return true; 
  } 
   
  @Override 
  public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) { 
//   System.out.println("onSurfaceTextureUpdated onSurfaceTextureUpdated"); 
  } 
   
  private class PlayerVideo extends Thread{ 
    @Override 
    public void run(){ 
       try { 
         File file=new File(Environment.getExternalStorageDirectory()+"/ansen.mp4"); 
         if(!file.exists()){//文件不存在 
           copyFile(); 
         } 
         mMediaPlayer= new MediaPlayer(); 
         mMediaPlayer.setDataSource(file.getAbsolutePath());  
         mMediaPlayer.setSurface(surface); 
         mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 
         mMediaPlayer.setOnPreparedListener(new OnPreparedListener() { 
          @Override 
          public void onPrepared(MediaPlayer mp){ 
            videoImage.setVisibility(View.GONE); 
            mMediaPlayer.start(); 
          } 
         }); 
         mMediaPlayer.prepare(); 
       } catch (Exception e) {  
         e.printStackTrace(); 
       } 
    } 
  } 
   
  public interface PlayerController{ 
    public void play(); 
  } 
   
  /** 
   * 如果sdcard没有文件就复制过去 
   */ 
  private void copyFile() { 
    AssetManager assetManager = this.getAssets(); 
    InputStream in = null; 
    OutputStream out = null; 
    try { 
      in = assetManager.open("ansen.mp4"); 
      String newFileName = Environment.getExternalStorageDirectory()+"/ansen.mp4"; 
      out = new FileOutputStream(newFileName); 
      byte[] buffer = new byte[1024]; 
      int read; 
      while ((read = in.read(buffer)) != -1) { 
        out.write(buffer, 0, read); 
      } 
      in.close(); 
      in = null; 
      out.flush(); 
      out.close(); 
      out = null; 
    } catch (Exception e) { 
      Log.e("tag", e.getMessage()); 
    } 
  } 
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:tools="http://schemas.android.com/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" > 
 
  <TextureView 
    android:id="@+id/textureview" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"/> 
   
   
  <ImageView 
    android:id="@+id/video_image" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:src="@drawable/ic_launcher"/> 
</RelativeLayout> 

private void sendEmpryMessage(){ 
  handler.sendEmptyMessageDelayed(0,300);//给主线程发送一个隐藏图片的消息 
}