Android--VideoPlay--视频播放器

代码跟音乐播放器有大部分是相同的，各位可以将mp4格式的

视频文件放到sdcard卡中，在输入框中输入文件名即可，在

模拟器上运行请使用android2.0版本，据说其他版本的模拟器

不支持视频播放，如有错误之处请大家指出

java代码如下：

package cn.mrzhu;import java.io.File;import android.app.Activity;import android.media.MediaPlayer;import android.media.MediaPlayer.OnPreparedListener;import android.os.Bundle;import android.os.Environment;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;import android.view.View;import android.widget.EditText;import android.widget.Toast;public class VideoPlayDemoActivity extends Activity { private EditText nameText; private String path;//文件路径 private MediaPlayer mediaPlayer;//media对象 private SurfaceView surfaceView; private boolean pause;//暂停标记 private int position;//播放的进度 /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);    nameText = (EditText)findViewById(R.id.filename);  surfaceView = (SurfaceView)findViewById(R.id.surfaceview);    //把输送给surfaceview的视频画面，直接显示到屏幕上，不要维持它自身的缓冲区  surfaceView.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);  surfaceView.getHolder().setFixedSize(176, 144);//设置视频播放窗口的大小  surfaceView.getHolder().setKeepScreenOn(true);//保持屏幕高亮  surfaceView.getHolder().addCallback(new SurfaceCallback());  mediaPlayer = new MediaPlayer();//实例化一个播放器对象 } private final class SurfaceCallback implements Callback{  public void surfaceChanged(SurfaceHolder holder, int format, int width,    int height) {     }  /*   * 当surfaceView被创建时   */  public void surfaceCreated(SurfaceHolder holder) {   if(position > 0 && path != null){    play(position);    position = 0;   }  }  /*   * 当surfaceView被销毁时   */    public void surfaceDestroyed(SurfaceHolder holder) {   mediaPlayer.stop();  }   }   /*  * 按钮事件，在main.xml中，每个按钮的click_on = mediaplay  */ public void mediaplay(View v){  switch(v.getId()){    case R.id.playbutton://播放按钮   String filename = nameText.getText().toString();//获取文件名   File file = new File(Environment.getExternalStorageDirectory(), filename);   if(file.exists()){    path = file.getAbsolutePath();    play(0);   }else{    //若路径不存在，弹出Toast提示    Toast.makeText(getApplicationContext(), R.string.filenoexsit, Toast.LENGTH_SHORT).show();   }   break;     case R.id.pausebutton://暂停按钮   if(mediaPlayer.isPlaying()){    mediaPlayer.pause();    pause = true;   }else{    mediaPlayer.start();    pause = false;   }   break;     case R.id.resetbutton://重播按钮   if(mediaPlayer.isPlaying()){    mediaPlayer.seekTo(0);   }else{    if(path != null){     play(0);//将播放进度置为0，恢复初始状态    }   }   break;     case R.id.stopbutton://停止按钮   if(mediaPlayer.isPlaying()){    mediaPlayer.stop();   }   break;  } } private void play(int position) {  try {   mediaPlayer.reset();   mediaPlayer.setDataSource(path);   mediaPlayer.setDisplay(surfaceView.getHolder());   mediaPlayer.prepare();   mediaPlayer.setOnPreparedListener(new PrepareListener(position));  } catch (Exception e) {  } }  private final class PrepareListener implements OnPreparedListener{  private int position;  public PrepareListener(int position) {   super();   this.position = position;  }  public void onPrepared(MediaPlayer mp) {   mediaPlayer.start();//播放视频   if(position > 0) mediaPlayer.seekTo(position);  }   } @Override protected void onDestroy() {  mediaPlayer.release();  mediaPlayer = null;  super.onDestroy(); }}

main.xml代码如下：

<?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"    android:background="#FFFFFF" >    <TextView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/filename" />    <EditText        android:id="@+id/filename"        android:layout_width="fill_parent"        android:layout_height="wrap_content"         android:text="@string/file"/>    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"         android:orientation="horizontal">                <Button             android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/playbutton"            android:onClick="mediaplay"            android:text="@string/playbutton"            />                <Button             android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/pausebutton"            android:onClick="mediaplay"            android:text="@string/pausebutton"            />                <Button             android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/resetbutton"            android:onClick="mediaplay"            android:text="@string/resetbutton"            />                <Button             android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:id="@+id/stopbutton"            android:onClick="mediaplay"            android:text="@string/stopbutton"            />    </LinearLayout>        <SurfaceView                 android:layout_width="fill_parent"        android:layout_height="240dp"        android:id="@+id/surfaceview"        /></LinearLayout>

string.xml代码如下：

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="filenoexsit">视频文件不存在</string>    <string name="app_name">视频播放器</string>    <string name="filename">视频文件名称</string>    <string name="playbutton">播放</string>    <string name="pausebutton">暂停</string>    <string name="resetbutton">重播</string>    <string name="stopbutton">停止</string>    <string name="file">OPPO.mp4</string></resources>

资源下载地址：http://download.csdn.net/detail/zlqqhs/4870784

资源里面有一个mp4文件，可直接放到 sdcard 卡中使用

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