Android 播放音频和视频

偏执的太偏执、 2022-08-21 00:04 298阅读 0赞

### 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： ###

①：加控件

②：加代码：

//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 ##