使用MediaPlayer和SurfaceView播放视频

来源：互联网发布：跳过windows update 编辑：程序博客网时间：2024/05/05 01:42

使用MediaPlayer播放视频的步骤

1、创建MediaPlyer的对象，并让他加载指定的视频文件。

2、在界面布局文件中定义SurfaceView组件，或在程序中创建SurfaceView组件。并为SurfaceView的SurfaceHolder添加Callback监听器。

3、调用MediaPlayer对象的setDisplay(Surfaceolder sh)将所播放的视频图像输出到指定的SurfaceView组件

4、调用MediaPlayer对象的start()、stop()、和pause()方法控制视频的播放

实例：

[html] view plaincopyprint?

<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"
tools:context=".MainActivity" >
<SurfaceView
android:id="@+id/surface1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
<LinearLayout
android:id="@+id/linaer1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
>
<Button android:id="@+id/start"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/start"
android:layout_weight="1"/>
<Button
android:id="@+id/pre"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/pre"
android:layout_weight="1"/>
<Button
android:id="@+id/stop"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/stop"
android:layout_weight="1"/>
</LinearLayout>
</RelativeLayout>

<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"    tools:context=".MainActivity" >  <SurfaceView        android:id="@+id/surface1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_centerInParent="true" />    <LinearLayout        android:id="@+id/linaer1"        android:layout_width="match_parent"        android:layout_height="wrap_content"         android:orientation="horizontal"        android:layout_alignParentBottom="true"       >       <Button android:id="@+id/start"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:text="@string/start"           android:layout_weight="1"/>       <Button            android:id="@+id/pre"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:text="@string/pre"           android:layout_weight="1"/>             <Button            android:id="@+id/stop"           android:layout_width="wrap_content"           android:layout_height="wrap_content"           android:text="@string/stop"           android:layout_weight="1"/>                   </LinearLayout>      </RelativeLayout>

[java] view plaincopyprint?

package com.android.xiong.surfaceviewtest;
import java.io.IOException;
import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.view.WindowManager;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener {
private SurfaceView surface1;
private Button start, stop, pre;
private MediaPlayer mediaPlayer1;
private int postion = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
surface1 = (SurfaceView) findViewById(R.id.surface1);
start = (Button) findViewById(R.id.start);
stop = (Button) findViewById(R.id.stop);
pre = (Button) findViewById(R.id.pre);
mediaPlayer1 = new MediaPlayer();
//设置播放时打开屏幕
surface1.getHolder().setKeepScreenOn(true);
surface1.getHolder().addCallback(new SurfaceViewLis());
start.setOnClickListener(this);
stop.setOnClickListener(this);
pre.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.start:
try {
play();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
case R.id.pre:
if (mediaPlayer1.isPlaying()) {
mediaPlayer1.pause();
} else {
mediaPlayer1.start();
}
break;
case R.id.stop:
if (mediaPlayer1.isPlaying())
mediaPlayer1.stop();
break;
default:
break;
}
}
public void play() throws IllegalArgumentException, SecurityException,
IllegalStateException, IOException {
mediaPlayer1.reset();
mediaPlayer1.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer1.setDataSource("/mnt/sdcard/通话录音/1.mp4");
// 把视频输出到SurfaceView上
mediaPlayer1.setDisplay(surface1.getHolder());
mediaPlayer1.prepare();
mediaPlayer1.start();
}
private class SurfaceViewLis implements SurfaceHolder.Callback {
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
if (postion == 0) {
try {
play();
mediaPlayer1.seekTo(postion);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
}
@Override
protected void onPause() {
if (mediaPlayer1.isPlaying()) {
// 保存当前播放的位置
postion = mediaPlayer1.getCurrentPosition();
mediaPlayer1.stop();
}
super.onPause();
}
@Override
protected void onDestroy() {
if (mediaPlayer1.isPlaying())
mediaPlayer1.stop();
mediaPlayer1.release();
super.onDestroy();
}
}

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