Close all running activities in an android application?

Question

I create one application and never use finish() for each activity. If my user clicks on the logout button it goes to the previous page.

How can I close my previous

Answer 1

Thanks for your replies. I solved my problem.

Solution: I write a file with some data and when the user clicks logout, I remove data from that file and finish() current activity, and all in previous activity I write code in onResume() I read file and if it is blank or null finish() so in that it will close all your activity and your application get close. Thank you for the great help.