使用SurfaceView+MediaPlayer+SeekBar实现视频播放

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以下是我使用SurfaceView+MediaPlayer+SeekBar实现简单的视频播放，这是基于音乐播放的前提实现的
这里写图片描述

只要是获取手机内存的内容都需要在清单文件中添加权限:

   <!-- 读取内存卡的权限 -->    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main2"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.g150825_playvideo.Main2Activity">    <SurfaceView        android:layout_width="match_parent"        android:layout_height="300dp"        android:id="@+id/sv_main_surface"        />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content">        <SeekBar            android:layout_width="0dp"            android:layout_weight="1"            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="isPlayOrPause"            />    </LinearLayout></LinearLayout>

Main2Activity.java

package com.example.g150825_playvideo;import android.media.AudioManager;import android.media.MediaPlayer;import android.net.Uri;import android.os.Environment;import android.os.SystemClock;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.widget.ImageButton;import android.widget.SeekBar;import java.io.IOException;public class Main2Activity 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_main2);        sb_main_bar = (SeekBar) findViewById(R.id.sb_main_bar);        sv_main_surface = (SurfaceView) findViewById(R.id.sv_main_surface);//给进度条设置滑动的监听        sb_main_bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {            }            @Override            public void onStopTrackingTouch(SeekBar seekBar) {                int progress=seekBar.getProgress();                //在当前位置播放                mediaPlayer.seekTo(progress);            }        });    }    public void isPlayOrPause(View view){        final ImageButton imageButton= (ImageButton) view;        if(mediaPlayer==null){            //播放内存中音频            //mediaPlayer = MediaPlayer.create(this, R.raw.f);            //播放内存卡中文件            mediaPlayer=new MediaPlayer();            //设置音源            try {                mediaPlayer.setDataSource(this, Uri.parse("file://mnt/sdcard/music11/videoplayer.mp4"));//            //准备                mediaPlayer.prepare();                //mediaPlayer.prepareAsync();            } catch (IOException e) {                e.printStackTrace();            }            //将媒体播放器捕捉的画面展示到SurfaceView            mediaPlayer.setDisplay(sv_main_surface.getHolder());            mediaPlayer.start();            imageButton.setImageResource(android.R.drawable.ic_media_pause);            //获取音乐的总时长            int duration=mediaPlayer.getDuration();            //将进度条设置最大值为：音乐的总时长            sb_main_bar.setMax(duration);            new MyThread().start();//                }//            });        }else if(mediaPlayer.isPlaying()){            mediaPlayer.pause();            imageButton.setImageResource(android.R.drawable.ic_media_play);        }else{            mediaPlayer.start();            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()){                //获取音乐当前播放的位置                int position=mediaPlayer.getCurrentPosition();                sb_main_bar.setProgress(position);            }        }    }}

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