Android Question Issue with Right click on a mouse

Sub Activity_KeyUp (KeyCode As Int) As Boolean
    Private input as JavaObject = Sender
    Private btn as Int = input.RunMethod("getSource", Null)
End Sub

Sub Activity_KeyPress (KeyCode As Int) As Boolean
    Select KeyCode
        Case4
            Do whatever
            Return True
     End Select
     Return False
End Sub

Private input as JavaObject = Sender
Private btn as Int = input.RunMethod("getSource", Null)

#If JAVA
public boolean _onkeydown (int keyCode, android.view.KeyEvent event) {
   BA.Log("onkeydown");
   BA.Log(Integer.toString(keyCode));
   BA.Log(Integer.toString(event.getSource()));
   
   Activity_KeyDown(keyCode, event.getSource());
   return true;
}
#End If

Sub Activity_KeyDown(keyCode As Int, Source As Int)
   Log("Activity_KeyDown: " & keyCode & " Source : " & Source )
End Sub

BA.Activity_KeyDown(keyCode, event.getSource());

#If JAVA
public boolean _onkeydown (int keyCode, android.view.KeyEvent event) {
   anywheresoftware.b4a.keywords.Common.CallSubNew3(mostCurrent.activityBA,main.getObject(),"Activity_KeyDown", keyCode, event.getSource());
   return true;
}
#End If
Sub Activity_KeyDown(keyCode As Int, Source As Int)
   Log("Activity_KeyDown: " & keyCode & " Source : " & Source )
End Sub