java - I want to link my application back button to android mobile builtin back button -

i tried many ways find out linking application android button easy application didn't find anyway. if can me out how can link when press android mobile icon application move category. working on android studio, api 25.

try override method:

@override public boolean onkeydown(int keycode, keyevent event) {     switch (keycode) {         case keyevent.keycode_back:             //your intent     }     return super.onkeydown(keycode, event); } 

or if button toolbar use this

@override     public boolean onoptionsitemselected(menuitem item) {         switch (item.getitemid()) {             case android.r.id.home:                 //your intent                 return true;         }         return super.onoptionsitemselected(item);     }