Android 播放音频和视频

目前只能播放项目中的音频和视频文件，如果要播放手机中文件还待进一步研究

一、播放音频：

public class MainActivity extends Activity {
VideoView vv;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
vv = (VideoView) findViewById(R.id.surface);
//播放视频需要使用VideoView控件
findViewById(R.id.button1).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
play_video();
}
});

findViewById(R.id.button2).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
play_music();
}
});
}

private void play_video() {
String uri = "android.resource://" + getPackageName() + "/"
+ R.raw.three;
//注意构造的url！！！
vv.setVideoURI(Uri.parse(uri));
// 添加资源的url
vv.setMediaController(new MediaController(this));
//给空间绑定安卓自带的控制器
vv.start();
//停止就是调用stop方法
}

private void play_music() {
MediaPlayer mediaPlayer = MediaPlayer.create(this, R.raw.bkg);
//添加资源id
mediaPlayer.setLooping(true);
//是否循环播放
mediaPlayer.start();
//停止就是调用stop方法

}

}

今天测试了下，终于把一个错误给解决了，在真机上测试的时候要注意视频的格式！！如果只有声音没有图像那么应该就是视频格式的问题了

二、播放视频

（1）使用mediaplayer播放视频：

package com.example.activity;

import java.io.IOException;

import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback2;
import android.view.SurfaceView;
import android.view.View;

import com.example.dasaitest.R;

public class MainActivity extends Activity implements Callback2 {

SurfaceView sv;
MediaPlayer mp;
SurfaceHolder surfaceHolder;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.media_shipin);
init();
play();
}

public void play() {
surfaceHolder = sv.getHolder();
surfaceHolder.addCallback(this);

}

public void init() {
sv = (SurfaceView) this.findViewById(R.id.surface);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);

}

@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
Uri uri = Uri.parse("android.resource://"
+ getApplicationContext().getPackageName() + "/"
+ R.drawable.haha);
try {
mp = new MediaPlayer();
mp.setDisplay(surfaceHolder);
mp.setDataSource(this, uri);
//          AssetFileDescriptor af = getAssets().openFd("haha.3gp");
//          mp.setDataSource(af.getFileDescriptor(), af.getStartOffset(),
//                  af.getLength());
mp.prepare();
mp.start();
mp.setOnCompletionListener(new OnCompletionListener() {

@Override
public void onCompletion(MediaPlayer mp) {
// TODO Auto-generated method stub
sv.setVisibility(View.GONE);
}
});
} 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 surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub

}

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

}

@Override
public void surfaceRedrawNeeded(SurfaceHolder holder) {
// TODO Auto-generated method stub

}

}

需要在布局文件中加surfaceview控件~~

（2）使用VideoView播放视频：

<VideoView
android:id="@+id/vv"
android:layout_width="match_parent"
android:layout_height="250dp" />

//可加视频播放控制器
VideoView videoView;
MediaController controller;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.videoview);
Uri uri = Uri.parse("android.resource://com.example.playvideo/"
+ R.drawable.video);
/*com.example.playvideo是该Activity所在的包名 */
videoView = (VideoView) findViewById(R.id.vv);
videoView.setVideoURI(uri);
videoView.start();
//下面是设置和添加视频播放控制器
controller = new MediaController(this);
controller.setMediaPlayer(videoView);
videoView.setMediaController(controller);
}

如果是播放手机存储卡上的音频或视频，只要找到文件的绝对路径就可以播放