VideoView，MediaController

image.png
image.png

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.lindingdu.app02">
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
        tools:ignore="ProtectedPermissions" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
            android:screenOrientation="landscape">
          <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">

    <VideoView

        android:id="@+id/video"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
         />

</RelativeLayout>

import android.media.MediaPlayer;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;

import java.io.File;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN
                ,WindowManager.LayoutParams.FLAG_FULLSCREEN);//全屏显示

        VideoView videoView=findViewById(R.id.video);

        /** 加载播放视频 **/
        File file=new File(Environment.getExternalStorageDirectory()+"/a.mp4");
        //获取视频文件对象
        if(file.exists()){
            videoView.setVideoPath(file.getAbsolutePath());//指定要播放的视频

        }else{
            Toast.makeText(MainActivity.this, "文件不存在", Toast.LENGTH_SHORT).show();
        }
        //控制视频播放
        MediaController mc=new MediaController(MainActivity.this);
        videoView.setMediaController(mc);//让VideoView与MediaControl关联
        videoView.requestFocus();//让VideoView获取焦点
        videoView.start();
        videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                Toast.makeText(MainActivity.this, "视频播放完毕", Toast.LENGTH_SHORT).show();
            }
        });

    }
}