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());

　　}

　　}

　　}