Android播放视频三种方式

Intent intent=new Intent(Intent.ACTION_VIEW);
Uri uri=Uri.parse("/sdcard/a.mp4");
intent.setDataAndType(uri, "video/mp4");
startActivity(intent);

<LinearLayout 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"
tools:context=".VideoViewActivity"
android:orientation="vertical" >

<VideoView
android:id="@+id/videoview"
android:layout_width="320dp"
android:layout_height="220dp"
android:layout_gravity="center"
>
</VideoView>

<LinearLayout
android:id="@+id/linearLayout1"
android:gravity="center_horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<Button
android:id="@+id/video_play"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="播放"
android:onClick="onBtnClick"
>
</Button>
<Button
android:id="@+id/video_pause"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onBtnClick"
android:text="暂停" >
</Button>

<Button
android:id="@+id/video_stop"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="onBtnClick"
android:text="停止" >
</Button>
</LinearLayout>

</LinearLayout>

package com.example.videoplayer;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.MediaController;
import android.widget.VideoView;

public class VideoViewActivity extends Activity {

private VideoView videoView;
private MediaController controller;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.video_view);
controller=new MediaController(VideoViewActivity.this);
videoView=(VideoView) findViewById(R.id.videoview);
videoView.setVideoPath("/sdcard/a.mp4");
videoView.setMediaController(controller);
videoView.requestFocus();
}
public void onBtnClick(View view){

if(view.getId()==R.id.video_play){
videoView.start();
}
if(view.getId()==R.id.video_pause){
videoView.pause();
}
if(view.getId()==R.id.video_stop){
videoView.stopPlayback();
}

}

}

package com.example.videoplayer;

import android.app.Activity;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements SurfaceHolder.Callback{
MediaPlayer player;
SurfaceView surface;
SurfaceHolder surfaceHolder;
Button play,pause,stop;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_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
//SURFACE_TYPE_PUSH_BUFFERS：标识数据来源于其他对象，比如照相机，比如视频播放服务器
//（android内部有视频播放的服务器，所有播放视频相当于客户端）
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
System.out.println("--------------------");
player=new MediaPlayer();
//必须要有这个方法
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setDisplay(surfaceHolder);
//设置显示视频显示在SurfaceView上
try {
player.setDataSource("/sdcard/a.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
}
}