then overwrite the method OnError(MediaPlayer mp , int what , int extra) with this method

@Override
public boolean onError(MediaPlayer mp, int what, int extra) 
    if (what == 100)
        video_view.stopPlayback();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    else if (what == 1)
        pb2.setVisibility(View.GONE);
        Log.i("My Error ", "handled here");
        video_view.stopPlayback();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    else if(what == 800)
        video_view.stopPlayback();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    else if (what == 701)
        video_view.stopPlayback();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    else if(what == 700)
        video_view.stopPlayback();
        Toast.makeText(getApplicationContext(), "Bad Media format ", Toast.LENGTH_SHORT).show();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    else if (what == -38)
        video_view.stopPlayback();
        Intent inn = new Intent(HelloInterruptVideoStream.this,TabAct.class);
        startActivity(inn);
    return false;
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Android – How to close/hide the Android soft keyboard programmatically

You can force Android to hide the virtual keyboard using the InputMethodManager, calling hideSoftInputFromWindow, passing in the token of the window containing your focused view.
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This will force the keyboard to be hidden in all situations. In some cases, you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down the menu).
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Kotlin Syntax
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Excellent answers from Luc and Mark. However, a good code sample is missing. Adding the tags android:focusableInTouchMode="true" and android:focusable="true" to the parent layout (e.g. LinearLayout or ConstraintLayout) like in the following example, will fix the problem.
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<LinearLayout
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<!-- :nextFocusUp and :nextFocusLeft have been set to the id of this component
to prevent the dummy from receiving focus again -->
<AutoCompleteTextView android:id="@+id/autotext"
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