个人练习代码库/VideoView封装

简单的VideoView方法应用+权限判断

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import android.widget.VideoView;

import java.io.File;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

private VideoView videoView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
videoView= (VideoView) findViewById(R.id.videoView);
Button play= (Button) findViewById(R.id.play);
Button pause= (Button) findViewById(R.id.pause);
Button replay= (Button) findViewById(R.id.replay);
play.setOnClickListener(this);
pause.setOnClickListener(this);
replay.setOnClickListener(this);
if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.
WRITE_EXTERNAL_STORAGE)!= PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.
WRITE_EXTERNAL_STORAGE},1);
}else {
initVideoPath();//初始化
}

}

private void initVideoPath() {
File file=new File(Environment.getExternalStorageDirectory(),"movie.mp4");
videoView.setVideoPath(file.getPath());
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode){
case 1:
if (grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED){
initVideoPath();
}else {
Toast.makeText(this,"拒绝权限将无法使用此软件",Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
}
}

@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.play:
if (!videoView.isPlaying()){
videoView.start();
}
break;
case R.id.pause:
if (videoView.isPlaying()){
videoView.pause();
}
break;
case R.id.replay:
if (videoView.isPlaying()){
videoView.resume();
}
break;
}

}

@Override
protected void onDestroy() {
super.onDestroy();
if (videoView!=null){
videoView.suspend();
}
}
}