How to play a video from raw folder?-CodePudding

I want to play a video from raw folder. I tried a java code but I give an error on my Logcat and the app is stops on the phone.

This is my code:

public class Help extends AppCompatActivity {
VideoView videoView;

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


    videoView = findViewById(R.id.helpvideo);

    MediaController mediaController = new MediaController(this);
    videoView.setMediaController(mediaController);
    Uri uri = Uri.parse("android.resource://"   getPackageName()   "/"   R.raw.video);
    videoView.setVideoURI(uri);
    videoView.start();



  }
}

And this is the error:

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.sinaMoradi.iran.ps, PID: 25296
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sinaMoradi.iran.ps/com.sinaMoradi.iran.ps.Help}: java.lang.ClassCastException: androidx.constraintlayout.widget.ConstraintLayout cannot be cast to android.widget.VideoView
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3827)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4003)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2317)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:246)
    at android.app.ActivityThread.main(ActivityThread.java:8595)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
 Caused by: java.lang.ClassCastException: androidx.constraintlayout.widget.ConstraintLayout cannot be cast to android.widget.VideoView
    at com.sinaMoradi.iran.ps.Help.onCreate(Help.java:24)
    at android.app.Activity.performCreate(Activity.java:8207)
    at android.app.Activity.performCreate(Activity.java:8191)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3800)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4003) 
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85) 
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2317) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:246) 
    at android.app.ActivityThread.main(ActivityThread.java:8595) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)

I'm a novice developer and I don't what are this errors. Thanks for your help.

CodePudding user response：

In res/layout/activity_help.xml, you have a widget named helpvideo. This is a ConstraintLayout. It is not a VideoView (or, perhaps, you have two widgets both named helpvideo). Ensure that the only helpvideo in the layout is the VideoView.

CodePudding user response：

You can create your xml file like this to open video view

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:layout_gravity="center" >
 
     <VideoView
        android:id="@ id/video_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center"/>
 
  </FrameLayout>

Paste video file to your res/Raw folder of the project.

Source code for main activity:

public class AndroidVideoViewExample extends Activity {
 
    private VideoView myVideoView;
    private int position = 0;
    private ProgressDialog progressDialog;
    private MediaController mediaControls;
 
    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        // set the main layout of the activity
        setContentView(R.layout.activity_main);
 
        //set the media controller buttons
        if (mediaControls == null) {
            mediaControls = new MediaController(AndroidVideoViewExample.this);
        }
 
        //initialize the VideoView
        myVideoView = (VideoView) findViewById(R.id.video_view);
 
        // create a progress bar while the video file is loading
        progressDialog = new ProgressDialog(AndroidVideoViewExample.this);
        // set a title for the progress bar
        progressDialog.setTitle("JavaCodeGeeks Android Video View Example");
        // set a message for the progress bar
        progressDialog.setMessage("Loading...");
        //set the progress bar not cancelable on users' touch
        progressDialog.setCancelable(false);
        // show the progress bar
        progressDialog.show();
 
        try {
            //set the media controller in the VideoView
            myVideoView.setMediaController(mediaControls);
 
            //set the uri of the video to be played
            myVideoView.setVideoURI(Uri.parse("android.resource://"   getPackageName()   "/"   R.raw.kitkat));
 
        } catch (Exception e) {
            Log.e("Error", e.getMessage());
            e.printStackTrace();
        }
 
        myVideoView.requestFocus();
        //we also set an setOnPreparedListener in order to know when the video file is ready for playback
        myVideoView.setOnPreparedListener(new OnPreparedListener() {
         
            public void onPrepared(MediaPlayer mediaPlayer) {
                // close the progress bar and play the video
                progressDialog.dismiss();
                //if we have a position on savedInstanceState, the video playback should start from here
                myVideoView.seekTo(position);
                if (position == 0) {
                    myVideoView.start();
                } else {
                    //if we come from a resumed activity, video playback will be paused
                    myVideoView.pause();
                }
            }
        });
 
    }
 
    @Override
    public void onSaveInstanceState(Bundle savedInstanceState) {
        super.onSaveInstanceState(savedInstanceState);
        //we use onSaveInstanceState in order to store the video playback position for orientation change
        savedInstanceState.putInt("Position", myVideoView.getCurrentPosition());
        myVideoView.pause();
    }
 
    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        //we use onRestoreInstanceState in order to play the video playback from the stored position 
        position = savedInstanceState.getInt("Position");
        myVideoView.seekTo(position);
    }
}

the part where the URI of the video file from raw folder is below:

 myVideoView.setVideoURI(Uri.parse("android.resource://"   getPackageName()   "/"   R.raw.kitkat));

You can use this code to play video from your raw folder. #HappyCoding