Android使用SurfaceView实现播放视频

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:weightSum="1">
<SurfaceView android:layout_height="220dip" android:layout_gravity="center" android:id="@+id/surface" android:layout_weight="0.25" android:layout_width="320dip"></SurfaceView>
<LinearLayout android:id="@+id/linearLayout1" android:layout_height="wrap_content" android:layout_width="fill_parent">
<Button android:text="播放" android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="暂停" android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
<Button android:text="停止" android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>
</LinearLayout>

public class SurfaceActivity extends Activity implements SurfaceHolder.Callback {
/** Called when the activity is first created. */
MediaPlayer player;
SurfaceView surface;
SurfaceHolder surfaceHolder;
Button play,pause,stop;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play=(Button)findViewById(R.id.button1);
pause=(Button)findViewById(R.id.button2);
stop=(Button)findViewById(R.id.button3);
surface=(SurfaceView)findViewById(R.id.surface);

surfaceHolder=surface.getHolder();　　//SurfaceHolder是SurfaceView的控制接口
surfaceHolder.addCallback(this); 　　//因为这个类实现了SurfaceHolder.Callback接口，所以回调参数直接this
surfaceHolder.setFixedSize(320, 220);　　//显示的分辨率,不设置为视频默认
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);　　//Surface类型

play.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
player.start();
}});
pause.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
player.pause();
}});
stop.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
player.stop();
}});
}

@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
}

@Override
public void surfaceCreated(SurfaceHolder arg0) {
//必须在surface创建后才能初始化MediaPlayer,否则不会显示图像
player=new MediaPlayer();
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setDisplay(surfaceHolder);
//设置显示视频显示在SurfaceView上
try {
player.setDataSource("/sdcard/3.mp4");
player.prepare();
} catch (Exception e) {
e.printStackTrace();
}
}

@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
// TODO Auto-generated method stub

}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
if(player.isPlaying()){
player.stop();
}
player.release();
//Activity销毁时停止播放，释放资源。不做这个操作，即使退出还是能听到视频播放的声音
}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/filename"
/>
<EditText android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="oppo.mp4"
android:id="@+id/filename"
/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<ImageButton  android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:src="@drawable/play"
android:id="@+id/play"
/>
<ImageButton  android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:src="@drawable/pause"
android:id="@+id/pause"
/>
<ImageButton  android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:src="@drawable/stop"
android:id="@+id/stop"
/>
<ImageButton  android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:src="@drawable/reset"
android:id="@+id/reset"
/>
</LinearLayout>
<SurfaceView android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/surfaceview"
/>
</LinearLayout>

public class VodeoPlayActivity extends Activity {
/** Called when the activity is first created. */
private EditText filenamEditText;
private MediaPlayer mediaPlayer;
private String filename;
private SurfaceView surfaceView;
private final static String TAG="VodeoPlayActivity";
private int prosition=0;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
filenamEditText=(EditText) this.findViewById(R.id.filename);
surfaceView=(SurfaceView)this.findViewById(R.id.surfaceview);
surfaceView.getHolder().setFixedSize(176, 144);//设置分辨率
surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);//设置surfaceview不维护自己的缓冲区，而是等待屏幕的渲染引擎将内容推送到用户面前
surfaceView.getHolder().addCallback(new SurceCallBack());//对surface对象的状态进行监听
mediaPlayer=new MediaPlayer();

ButtonOnClikListiner buttonOnClikListinero=new ButtonOnClikListiner();
ImageButton start=(ImageButton) this.findViewById(R.id.play);
ImageButton pause=(ImageButton) this.findViewById(R.id.pause);
ImageButton stop=(ImageButton) this.findViewById(R.id.stop);
ImageButton replay=(ImageButton) this.findViewById(R.id.reset);
start.setOnClickListener(buttonOnClikListinero);
pause.setOnClickListener(buttonOnClikListinero);
stop.setOnClickListener(buttonOnClikListinero);
replay.setOnClickListener(buttonOnClikListinero);
}

private final class ButtonOnClikListiner implements View.OnClickListener{
@Override
public void onClick(View v) {
if(Environment.getExternalStorageState()==Environment.MEDIA_UNMOUNTED){
Toast.makeText(VodeoPlayActivity.this, "sd卡不存在", Toast.LENGTH_SHORT).show();
return;
}
filename=filenamEditText.getText().toString();
switch (v.getId()) {
case R.id.play:
play();
break;
case R.id.pause:
if(mediaPlayer.isPlaying()){
mediaPlayer.pause();
}else{
mediaPlayer.start();
}
break;
case R.id.reset:
if(mediaPlayer.isPlaying()){
mediaPlayer.seekTo(0);
}else{
play();
}
break;
case R.id.stop:
if(mediaPlayer.isPlaying()){
mediaPlayer.stop();
}
break;
}
}
}

private void play() {
try {
File file=new File(Environment.getExternalStorageDirectory(),filename);
mediaPlayer.reset();//重置为初始状态
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);//设置音乐流的类型
mediaPlayer.setDisplay(surfaceView.getHolder());//设置video影片以surfaceviewholder播放
mediaPlayer.setDataSource(file.getAbsolutePath());//设置路径
mediaPlayer.prepare();//缓冲
mediaPlayer.start();//播放
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
}

private final class SurceCallBack implements SurfaceHolder.Callback{
/**
* 画面修改
*/
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub

}

/**
* 画面创建
*/
@Override
public void surfaceCreated(SurfaceHolder holder) {
if(prosition>0&&filename!=null){
play();
mediaPlayer.seekTo(prosition);
prosition=0;
}

}

/**
* 画面销毁
*/
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if(mediaPlayer.isPlaying()){
prosition=mediaPlayer.getCurrentPosition();
mediaPlayer.stop();
}
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<SurfaceView android:id="@+id/surfaceView1"
android:layout_width="320px" android:layout_height="160px"></SurfaceView>
<LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content"
android:orientation="horizontal"
>
<ImageButton  android:id="@+id/button_play" android:src="@drawable/play" android:onClick="buttonClick"
android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageButton>
<ImageButton  android:id="@+id/button_pause" android:src="@drawable/pause" android:onClick="buttonClick"
android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageButton>
<ImageButton  android:id="@+id/button_stop" android:src="@drawable/stop" android:onClick="buttonClick"
android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageButton>
<ImageButton  android:id="@+id/button_reset" android:src="@drawable/reset" android:onClick="buttonClick"
android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageButton>
</LinearLayout>
</LinearLayout>

package cn.com.chenzheng_java.media;

import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
/**
* @description 通过SurfaceView/SurfaceHolder实现自己的播放器
* @author chenzheng_java
* @since 2011/03/23
* @description 这里进行一下补充说明，我们可以通过mediaplayer添加OnPreparedListener
*  以及OnCompletionListener等事件对准备好播放以及播放完成后的操作进行控制。
* 使用SurfaceView以及SurfaceHolder进行视频播放时，结构是这样的：
* 1、首先，我们从布局文件中获取一个surfaceView
* 2、通过surfaceView.getHolder()方法获取与该容器想对应的surfaceHolder
* 3、对srufaceHolder进行一些默认的设置，如addCallback()和setType()
* 4、通过mediaPlayer.setDisplay()方法将视频播放与播放容器链接起来
*/
public class MyMediaPlayerActivity extends Activity {

MediaPlayer mediaPlayer ; // 播放器的内部实现是通过MediaPlayer
SurfaceView surfaceView ;// 装在视频的容器
SurfaceHolder surfaceHolder;// 控制surfaceView的属性（尺寸、格式等）对象
boolean isPause ; // 是否已经暂停了

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.media);
surfaceView = (SurfaceView) findViewById(R.id.surfaceView1);
/**
* 获取与当前surfaceView相关联的那个的surefaceHolder
*/
surfaceHolder = surfaceView.getHolder();
/**
* 注册当surfaceView创建、改变和销毁时应该执行的方法
*/
surfaceHolder.addCallback(new SurfaceHolder.Callback() {

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i("通知", "surfaceHolder被销毁了");
if(mediaPlayer!=null)
mediaPlayer.release();
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.i("通知", "surfaceHolder被create了");
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
Log.i("通知", "surfaceHolder被改变了");
}
});

/**
*  这里必须设置为SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS哦，意思
*  是创建一个push的'surface'，主要的特点就是不进行缓冲
*/
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}

/***
* @param targetButton 被用户点击的按钮
*/
public void buttonClick(View targetButton){
int buttonId = targetButton.getId();
switch (buttonId) {
case R.id.button_play:
play();
break;
case R.id.button_pause:
pause();
break;
case R.id.button_reset:
reset();
break;
case R.id.button_stop:
stop();
break;
default:
break;
}

}

/**
* 播放
*/
private void play(){

mediaPlayer = new MediaPlayer();
// 设置多媒体流类型
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

// 设置用于展示mediaPlayer的容器
mediaPlayer.setDisplay(surfaceHolder);
try {
mediaPlayer.setDataSource("/data/jinsha.3gp");
mediaPlayer.prepare();
mediaPlayer.start();
isPause = false;
} catch (Exception e) {
Log.i("通知", "播放过程中出现了错误哦");
}
}

/**
* 暂停
*/
private void pause(){
Log.i("通知", "点击了暂停按钮");
if(isPause==false){
mediaPlayer.pause();
isPause=true;
}else{
mediaPlayer.start();
isPause=false;
}

}

/**
* 重置
*/
private void reset(){
Log.i("通知", "点击了reset按钮");
// 跳转到视频的最开始
mediaPlayer.seekTo(0);
mediaPlayer.start();
}

/**
* 停止
*/
private void stop(){
Log.i("通知", "点击了stop按钮");
mediaPlayer.stop();
mediaPlayer.release();

}

}