android 8.4.2
播放视频没什么可说的跟上次一样，先新建项目，然后。。。AndroidManifest.xml<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
activity_main.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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/play"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="play"/>
<Button
android:id="@+id/pause"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="pause"/>
<Button
android:id="@+id/replay"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="replay"/>
</LinearLayout>
<VideoView
android:id="@+id/video_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
mainactivity.javapackage com.example.xinwei.playvideotest;
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.video_view);
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();
}
}
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) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode){
case 1:
if (grantResults.length>0&&grantResults==PackageManager.PERMISSION_GRANTED){
initVideoPath();
}else {
Toast.makeText(this, "can not use this program if denied permission", 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();
}
}
}
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