Android SurfaceView视频播放器

视频播放器其实本质上与音乐播放器大同小异，说到底本质上就是音频源的不同，所以我就不像上一篇将音乐播放器那样详细了，只用手机内存卡中的视频做示范。

音乐播放器博客地址http://blog.csdn.net/zhangkaidsy/article/details/75571038

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.android27_zhangkai_playvideo.MainActivity">    <SurfaceView        android:layout_width="match_parent"        android:layout_height="400dp"        android:id="@+id/sv_main_surface"        />    <SeekBar        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/sb_main_bar"        />    <ImageButton        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@android:drawable/ic_media_play"        android:onClick="playOrPause"        /></LinearLayout>

MainActivity.java

package com.example.android27_zhangkai_playvideo;import android.media.AudioManager;import android.media.MediaPlayer;import android.net.Uri;import android.os.Environment;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.SurfaceView;import android.view.View;import android.widget.ImageButton;import android.widget.SeekBar;import java.io.IOException;public class MainActivity extends AppCompatActivity {    private MediaPlayer mediaPlayer;    private SeekBar sb_main_bar;    private SurfaceView sv_main_surface;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        sb_main_bar = (SeekBar) findViewById(R.id.sb_main_bar);        sv_main_surface = (SurfaceView) findViewById(R.id.sv_main_surface);        //给进度条设置滑动监听        sb_main_bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {            }            @Override            public void onStopTrackingTouch(SeekBar seekBar) {                //获取当前进度条的位置                int currentPosition=seekBar.getProgress();                //跳转到某个位置进行播放                mediaPlayer.seekTo(currentPosition);            }        });    }    public void playOrPause(View view){        final ImageButton imageButton= (ImageButton) view;        //实例化MediaPlayer        if(mediaPlayer==null){            if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){                String sdPath=Environment.getExternalStorageDirectory().getAbsolutePath();                mediaPlayer=new MediaPlayer();                //设置音频流的类型                mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);                //设置音源                try {                    mediaPlayer.setDataSource(this, Uri.parse("file://"+sdPath+"/dcim/camera/video_20161013_233717.mp4"));                    mediaPlayer.prepare();                } catch (IOException e) {                    e.printStackTrace();                }                //将画面展示到 SurfaceView上                mediaPlayer.setDisplay(sv_main_surface.getHolder());                mediaPlayer.start();                //暂停图标                imageButton.setImageResource(android.R.drawable.ic_media_pause);                //获取音乐的播放时间                int time=mediaPlayer.getDuration();                //设置进度条的最大值 为  视频的播放时间                sb_main_bar.setMax(time);                new MyThread().start();            }        }else if(mediaPlayer.isPlaying()){            mediaPlayer.pause();            //播放图标            imageButton.setImageResource(android.R.drawable.ic_media_play);        }else{            mediaPlayer.start();            //暂停图标            imageButton.setImageResource(android.R.drawable.ic_media_pause);        }    }    class MyThread extends Thread{        @Override        public void run() {            super.run();            while(sb_main_bar.getProgress()<sb_main_bar.getMax()){                //获取音乐当前的播放位置                int currentPosition=mediaPlayer.getCurrentPosition();                sb_main_bar.setProgress(currentPosition);            }        }    }}

上述代码就可以实现视频播放器了。

除了上述的方式，还有一种更为简单的方式：
那就是使用VideoView标签
activity_video.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent">    <VideoView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/vv_video"        /></LinearLayout>

VedioActivity.java

package com.zking.administrator.g160628_android28_playvideo;import android.net.Uri;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.MediaController;import android.widget.VideoView;public class VideoActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_video);        VideoView vv_video= (VideoView) findViewById(R.id.vv_video);        vv_video.setVideoURI(Uri.parse("file://mnt/sdcard/dcim/camera/VID_20170715_140439.mp4"));        MediaController mediaController=new MediaController(this);        mediaController.setMediaPlayer(vv_video);        vv_video.setMediaController(mediaController);    }}

上述代码也可实现视频播放