Android MediaPlayer本地视频播放器

本文主要是介绍Android MediaPlayer本地视频播放器，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

该文章的目的是，让初学者能够快速掌握一个简单的本地视频播放器。该Demo中用到了SurfaceView、MediaPlayer。

实现效果图：

[html]  view plain copy  
 <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"  
     android:paddingBottom="@dimen/activity_vertical_margin"  
     android:paddingLeft="@dimen/activity_horizontal_margin"  
     android:paddingRight="@dimen/activity_horizontal_margin"  
     android:paddingTop="@dimen/activity_vertical_margin"  
     tools:context=".MainActivity" >  
   
     <TextView  
         android:id="@+id/textView"  
         android:layout_width="wrap_content"  
         android:layout_height="wrap_content"  
         android:layout_centerHorizontal="true"  
         android:text="视频播放器SurfaceView实例" />  
   
     <SurfaceView  
         android:id="@+id/sv"  
         android:layout_width="match_parent"  
         android:layout_height="320dp"  
         android:layout_below="@id/textView" />  
   
     <SeekBar  
         android:id="@+id/seekBar"  
         android:layout_width="match_parent"  
         android:layout_height="wrap_content"  
         android:layout_below="@id/sv" />  
   
     <LinearLayout  
         android:id="@+id/linearLayout"  
         android:layout_width="match_parent"  
         android:layout_height="wrap_content"  
         android:layout_below="@id/seekBar"  
         android:orientation="horizontal" >  
   
         <Button  
             android:id="@+id/button_play"  
             android:layout_width="0dp"  
             android:layout_height="wrap_content"  
             android:layout_weight="1"  
             android:text="播放" />  
   
         <Button  
             android:id="@+id/button_pause"  
             android:layout_width="0dp"  
             android:layout_height="wrap_content"  
             android:layout_weight="1"  
             android:text="暂停" />  
   
         <Button  
             android:id="@+id/button_stop"  
             android:layout_width="0dp"  
             android:layout_height="wrap_content"  
             android:layout_weight="1"  
             android:text="停止" />  
   
         <Button  
             android:id="@+id/button_replay"  
             android:layout_width="0dp"  
             android:layout_height="wrap_content"  
             android:layout_weight="1"  
             android:text="重播" />  
     </LinearLayout>  
   
 </RelativeLayout>  

[java]  view plain copy  
 package com.surfaceviewdemo;  
   
 import android.app.Activity;  
 import android.media.AudioManager;  
 import android.media.MediaPlayer;  
 import android.media.MediaPlayer.OnCompletionListener;  
 import android.media.MediaPlayer.OnErrorListener;  
 import android.media.MediaPlayer.OnPreparedListener;  
 import android.os.Bundle;  
 import android.view.SurfaceHolder;  
 import android.view.SurfaceHolder.Callback;  
 import android.view.SurfaceView;  
 import android.view.View;  
 import android.view.View.OnClickListener;  
 import android.widget.Button;  
 import android.widget.SeekBar;  
 import android.widget.SeekBar.OnSeekBarChangeListener;  
   
 /** 
  * 使用SurfaceView和MediaPlayer的本地视频播放器。 
  *  
  */  
 public class MainActivity extends Activity implements OnClickListener {  
     private SurfaceView surfaceView;  
     private Button button_play, button_pause, button_stop, button_replay;  
     private MediaPlayer mediaPlayer;  
     private SeekBar seekBar;  
     private int currentPosition;  
     private boolean isPlaying;  
     @Override  
     protected void onCreate(Bundle savedInstanceState) {  
         super.onCreate(savedInstanceState);  
         setContentView(R.layout.activity_main);  
           
         init();  
   
         initData();  
     }  
   
     private void init() {  
         button_play = (Button) findViewById(R.id.button_play);  
         button_pause = (Button) findViewById(R.id.button_pause);  
         button_stop = (Button) findViewById(R.id.button_stop);  
         button_replay = (Button) findViewById(R.id.button_replay);  
   
         surfaceView = (SurfaceView) findViewById(R.id.sv);  
         seekBar = (SeekBar) findViewById(R.id.seekBar);  
         seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {  
               
             @Override  
             public void onStopTrackingTouch(SeekBar seekBar) {  
                 int process = seekBar.getProgress();  
                 if (mediaPlayer!=null && mediaPlayer.isPlaying()) {  
                     mediaPlayer.seekTo(process);  
                 }  
             }  
               
             @Override  
             public void onStartTrackingTouch(SeekBar seekBar) {  
                   
             }  
               
             @Override  
             public void onProgressChanged(SeekBar seekBar, int progress,  
                     boolean fromUser) {  
                   
             }  
         });  
     }  
       
     private void initData() {  
         mediaPlayer = new MediaPlayer();  
         surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);//4.0一下的版本需要加该段代码。  
           
         surfaceView.getHolder().addCallback(new Callback() {  
   
             @Override  
             public void surfaceDestroyed(SurfaceHolder holder) {  
                 /** 
                  * 当点击手机上home键（或其他使SurfaceView视图消失的键）时，调用该方法，获取到当前视频的播放值，currentPosition。 
                  * 并停止播放。 
                  */  
                 currentPosition = mediaPlayer.getCurrentPosition();  
                 stop();  
             }  
   
             @Override  
             public void surfaceCreated(SurfaceHolder holder) {  
                 /** 
                  * 当重新回到该视频应当视图的时候，调用该方法，获取到currentPosition，并从该currentPosition开始继续播放。 
                  */  
                 if (currentPosition > 0) {  
                     play(currentPosition);  
                 }  
             }  
   
             @Override  
             public void surfaceChanged(SurfaceHolder holder, int format,  
                     int width, int height) {  
   
             }  
         });  
           
         button_play.setOnClickListener(this);  
         button_pause.setOnClickListener(this);  
         button_stop.setOnClickListener(this);  
         button_replay.setOnClickListener(this);  
     }  
   
   
   
     @Override  
     public void onClick(View v) {  
         switch (v.getId()) {  
         case R.id.button_play:  
             /** 
              * 播放 
              */  
             play(0);  
   
             break;  
   
         case R.id.button_pause:  
             /** 
              * 暂停 
              */  
             pause();  
   
             break;  
   
         case R.id.button_stop:  
             /** 
              * 停止 
              */  
             stop();  
             break;  
   
         case R.id.button_replay:  
             /** 
              * 重播 
              */  
             replay();  
             break;  
   
         default:  
             break;  
         }  
     }  
   
     private void replay() {  
         if (mediaPlayer.isPlaying()) {  
             mediaPlayer.seekTo(0);  
         } else {  
             play(0);  
         }  
     }  
   
     private void stop() {  
         if (mediaPlayer.isPlaying()) {  
             mediaPlayer.stop();  
             mediaPlayer.seekTo(0);  
         }  
   
     }  
   
     private void pause() {  
         if (mediaPlayer.isPlaying()) {  
             mediaPlayer.pause();  
         } else {  
             mediaPlayer.start();  
         }  
   
     }  
   
     private void play(final int currentPosition) {  
         String path = "/mnt/sdcard2/1.mp4";//指定视频所在路径。  
 //      String path = "http://daily3gp.com/vids/family_guy_penis_car.3gp";//指定视频所在路径。  
         mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);//设置视频流类型  
         try {  
   
             mediaPlayer.setDisplay(surfaceView.getHolder());  
             mediaPlayer.setDataSource(path);  
             mediaPlayer.prepareAsync();  
               
             mediaPlayer.setOnPreparedListener(new OnPreparedListener() {  
   
                 @Override  
                 public void onPrepared(MediaPlayer mp) {  
                     mediaPlayer.start();  
                     int max = mediaPlayer.getDuration();  
                     seekBar.setMax(max);  
                     mediaPlayer.seekTo(currentPosition);  
                       
                     new Thread(){  
                           
                         public void run() {  
                             isPlaying = true;  
                             while (isPlaying) {  
                                 int position = mediaPlayer.getCurrentPosition();  
                                 seekBar.setProgress(position);  
                                 try {  
                                     Thread.sleep(500);  
                                 } catch (InterruptedException e) {  
                                     e.printStackTrace();  
                                 }  
                             }  
                               
                         };  
                     }.start();  
                 }  
             });  
               
             mediaPlayer.setOnCompletionListener(new OnCompletionListener() {  
   
                 @Override  
                 public void onCompletion(MediaPlayer mp) {  
                     button_play.setEnabled(true);  
                 }  
             });  
               
             mediaPlayer.setOnErrorListener(new OnErrorListener() {  
   
                 @Override  
                 public boolean onError(MediaPlayer mp, int what, int extra) {  
                     button_play.setEnabled(true);  
                     return false;  
                 }  
             });  
         } catch (Exception e) {  
             e.printStackTrace();  
         }  
     }  
   
 }  