安卓本地视频播放SurfaceView+MediaPlayer

MainActivity

public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback{

    private SurfaceView sfv;
    private MediaPlayer mediaPlayer;
    private SurfaceHolder holder;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        sfv = (SurfaceView) findViewById(R.id.sfv);

        mediaPlayer = new MediaPlayer();

        holder = sfv.getHolder();

        holder.addCallback(this);

        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                mediaPlayer.start();
            }
        });
//        视频播放完成后会回调的方法
        mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                mediaPlayer.release();
            }
        });
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        mediaPlayer.reset();
        mediaPlayer.setDisplay(holder);
        Uri uri = Uri.parse("android.resource://"+getPackageName()+"/"+R.raw.minion_01);
        try {
            mediaPlayer.setDataSource(this,uri);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

    }
    @Override
    protected void onStop() {
        super.onStop();
        if (mediaPlayer!=null) {
            mediaPlayer.release();
        }
    }
    public void play(View view) {
        mediaPlayer.prepareAsync();
    }
}

activity_main

<?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"
    >
    <SurfaceView
        android:id="@+id/sfv"
        android:layout_width="match_parent"
        android:layout_height="300dp" />
    <Button
        android:id="@+id/btn_play"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="开始播放"
        android:onClick="play"/>
</LinearLayout>

权限++

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!-- 粗略定位 -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- 精准定位 -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.LOCATION_HARDWARE" />