android go back to first screen

I have an android app with links (made by lin开发者_StackOverflow中文版kify) that lead into other screens of my app. I'm wondering what's the best approach to close all of the 'child' activities and go back to the first activity that was originally launched.

in otherwords something like this:

HomeScreenActivity => Screen1 (via Linkify-link) => Screen2 => Screen3 => click home => (close screens 1, 2 & 3) => HomeScreenActivity

You should be able to accomplish this by creating an intent for your HomeScreenActivity with the FLAG_ACTIVITY_CLEAR_TOP flag.

You could start Screen3 with startActivityForResult in Screen2. When you want to go back to screen1 from screen3 you return a result that let's Screen2 call finish() and you call finish() yourself in Screen3.