public class MainActivity extends AppCompatActivity {
Private static final String TAG="MainActivity - v. v."; 

private String path; 
Private VideoView VideoView; 
Private MediaController MediaController; 
Private File File; 

@ Override 
Protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 
Path=Environment. External.getexternalstoragedirectory (.) getAbsolutePath () + "/one. Mp4"; 
The file=new file (path); 

VideoView=the findViewById (R.i d.v ideoview); 
MediaController=new mediaController (this); 
CheckPermissionAndPlayVideo (); 
} 

Private void checkPermissionAndPlayVideo () {
Int I=ContextCompat. CheckSelfPermission (this, the Manifest. Permission. READ_EXTERNAL_STORAGE); 
if (i !=PackageManager. PERMISSION_GRANTED) {
ActivityCompat. RequestPermissions (this, new String [] {the Manifest. Permission. READ_EXTERNAL_STORAGE}, 999); 
} else {
PlayVideo (); 
} 
} 

Private void playVideo () {
VideoView. SetMediaController (mediaController); 
VideoView. SetVideoPath (path); 
VideoView. Start (); 
} 

@ Override 
Public void onRequestPermissionsResult (int requestCode, @ NonNull String [] permissions, @ NonNull int [] grantResults) {
If (requestCode==999) {
If (grantResults. Length & gt; 0 & amp; & GrantResults [0]==PackageManager. PERMISSION_GRANTED) {
PlayVideo (); 
} else {
Toast. MakeText (this, "to take SDcard permissions", Toast. LENGTH_SHORT), show (); 
} 
} 
} 
} 

 & lt; ? The XML version="1.0" encoding="utf-8"?> 
Package="com. Example. Myapplication" & gt; 

 

Android: allowBackup="true" 
The android: icon="@ mipmap/ic_launcher" 
Android: label="@ string/app_name" 
Android: roundIcon="@ mipmap/ic_launcher_round" 
Android: supportsRtl="true" 
Android: theme="@ style/AppTheme" & gt; 
 

 
 

Android: authorities="com. Imooc. The provider" 
The android: name="androidx. Core. Content. FileProvider" 
Android: grantUriPermissions="true" 
Android: exported="false" & gt; 
<meta - data 
The android: name="android. Support. FILE_PROVIDER_PATHS" 
Android: resource="@ XML/file_path" & gt;  
 


 

 

 & lt; ? The XML version="1.0" encoding="utf-8"?> 

Name="name", "
Path="" & gt;  

 

 
The 2020-03-15 09:57:30. 328, 8615-8741/com. Example. Myapplication D/HiTouch_PressGestureDetector: onAttached, package=com. Example. Myapplication, windowType=1, mHiTouchRestricted=false 
2020-03-15 09:57:30. 332, 8615-8615/com. Example. Myapplication W/MediaPlayer: Couldn 't open the uri in attemptDataSource 
The 2020-03-15 09:57:30. 334, 8615-8615/com. Example. Myapplication W/VideoView: Unable to open the content:/storage/emulated/0/one. Mp4 
Java. IO. FileNotFoundException:/storage/emulated/0/one. Mp4: open failed: EACCES (Permission denied) 
The at libcore. IO. IoBridge. Open (IoBridge. Java: 496) 
The at Java. IO. FileInputStream. & lt; init> (a FileInputStream. Java: 159) 
An android. Media. The MediaPlayer. SetDataSource (MediaPlayer. Java: 1264) 
An android. Media. The MediaPlayer. SetDataSource (MediaPlayer. Java: 1208) 
An android. Media. The MediaPlayer. SetDataSource (MediaPlayer. Java: 1124) 
An android. Media. The MediaPlayer. SetDataSource (MediaPlayer. Java: 1145) 
. An android widget. The VideoView. OpenVideo (VideoView. Java: 412) 
. An android widget. The VideoView. Access the $2200 (83) VideoView. Java: 
An android. Widget. VideoView $7. SurfaceCreated (VideoView. Java: 694) 
An android. View. SurfaceView. UpdateSurface (SurfaceView. Java: 786) 
An android. View. SurfaceView $2. OnPreDraw (SurfaceView. Java: 162) 
An android. View. ViewTreeObserver. DispatchOnPreDraw (ViewTreeObserver. Java: 1088) 
An android. View. ViewRootImpl. PerformTraversals (ViewRootImpl. Java: 2944) 
An android. View. ViewRootImpl. DoTraversal (ViewRootImpl. Java: 1857) 
An android. View. ViewRootImpl $TraversalRunnable. Run (ViewRootImpl. Java: 8089) 
At android. View. Choreographer $CallbackRecord. Run (1057) Choreographer. Java: 
An android. View. Choreographer. DoCallbacks (Choreographer. Java: 875) 
An android. View. Choreographer. DoFrame (Choreographer. Java: 776) 
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