How to navigate back to a specific activity?

Question

Android

In general, there is an activity that emulates working with a tree.
The id_parent is passed to him in the Intent. id_parent=0 is the root of the tree. The investment is not limited in any way.
The back button navigates to the parent element.
I want to make a transition to the root of the tree by long pressing the back button. I know how to hang up an event for a long press of the button back (back).
The question arose of how to go to the root (Intent: id_parent=0) without breaking the navigation history?

Answer 1

I solved the problem by maintaining my own navigation stack Stack<Activity>and sequentially calling the finish () method of the activity in the stack with a long press on the "back" button.

Answer 2

In my opinion, it is more correct to solve this issue not with the activity stack, but with the fragment stack with the redefinition of the back button.