安卓使用MediaPlayer和SurfaceView播放视频

来源：互联网发布：大数据在传媒界的应用编辑：程序博客网时间：2024/04/30 17:09

效果

代码

package com.javen.devicemange.CrazyOne.media;import android.Manifest;import android.media.AudioManager;import android.media.MediaPlayer;import android.os.Bundle;import android.os.Environment;import android.support.annotation.Nullable;import android.support.v4.app.ActivityCompat;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.widget.Button;import com.javen.devicemange.R;import java.io.File;import java.io.IOException;/** * Created by Administrator on 2017/2/27 0027. * 使用MediaPlayer和SurfaceView播放视频 */public class SurfaceViewPlayVideo extends AppCompatActivity implements View.OnClickListener {    private SurfaceView surface_view;    private Button play;    private Button pause;    private Button stop;    private MediaPlayer mediaPlayer;    private int position;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.surfaceviewplayvideo);        initView();        requestPermission();        mediaPlayer = new MediaPlayer();        //设置surface自己不管理的缓冲区        surface_view.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);        //设置播放时打开屏幕        surface_view.getHolder().setKeepScreenOn(true);        //设置监听        surface_view.getHolder().addCallback(new SurfaceListner());    }    private void requestPermission() {        String[] needPermission = {                Manifest.permission.READ_EXTERNAL_STORAGE,                Manifest.permission.WRITE_EXTERNAL_STORAGE,        };        ActivityCompat.requestPermissions(this, needPermission, 1);    }    private void initView() {        surface_view = (SurfaceView) findViewById(R.id.surface_view);        play = (Button) findViewById(R.id.play);        pause = (Button) findViewById(R.id.pause);        stop = (Button) findViewById(R.id.stop);        play.setOnClickListener(this);        pause.setOnClickListener(this);        stop.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            //播放            case R.id.play:                try {                    playMediaPlayer();                } catch (IOException e) {                    e.printStackTrace();                    Log.d("GsonUtils", "Exception=" + e.toString());                }                break;            //暂停            case R.id.pause:                if (mediaPlayer.isPlaying()) {                    mediaPlayer.pause();                } else {                    mediaPlayer.start();                }                break;            //停止            case R.id.stop:                if (mediaPlayer.isPlaying()) {                    mediaPlayer.stop();                }                break;        }    }    private class SurfaceListner implements SurfaceHolder.Callback {        @Override        public void surfaceCreated(SurfaceHolder holder) {            Log.d("GsonUtils", "surfaceCreated_position=" + position);            if (position > 0) {                Log.d("GsonUtils", "seekTo=");                try {                    playMediaPlayer();                    //跳到上次继续播放                    mediaPlayer.seekTo(position);                    position = 0;                } catch (Exception e) {                    e.printStackTrace();                    Log.d("GsonUtils", "Exception=" + e.toString());                }            }        }        @Override        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {        }        @Override        public void surfaceDestroyed(SurfaceHolder holder) {        }    }    private void playMediaPlayer() throws IOException {        mediaPlayer.reset();        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);        //获取sd卡根目录下的test.mp4文件        File file = new File(Environment.getExternalStorageDirectory().toString() + "/test.mp4");        if (file.exists()) {            mediaPlayer.setDataSource(file.getAbsolutePath());            //把视频画面输出到surfaceView            mediaPlayer.setDisplay(surface_view.getHolder());            mediaPlayer.prepare();            mediaPlayer.start();        }    }    //当打开其它activity或者最小化回到桌面时候    @Override    protected void onPause() {        if (mediaPlayer.isPlaying()) {            //保存视频播放的位置            position = mediaPlayer.getCurrentPosition();            mediaPlayer.stop();        }        super.onPause();    }    @Override    protected void onDestroy() {        if (mediaPlayer.isPlaying()) {            mediaPlayer.stop();        }        mediaPlayer.release();        super.onDestroy();    }}

sd卡mp4的位置

布局xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:layout_height="match_parent"              android:orientation="vertical">    <SurfaceView android:id="@+id/surface_view"                 android:layout_width="match_parent"                 android:layout_height="300dp"    />    <Button        android:id="@+id/play"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="play"/>    <Button        android:id="@+id/pause"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="pause"/>    <Button        android:id="@+id/stop"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="stop"/></LinearLayout>

AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

。。。

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