Disable back button in android

Question

How to disable back button in android while logging out the application?

Answer 1

If you want to make sure your android client application is logged out from some server before your Activity gets killed --> log out with a service on its own thread (that's what you're supposed to do anyway).

Disabling the back button won't solve anything for you. You'll still have the same problem when the user receives a phone call for instance. When a phone call is received, your activity has about as much chances of getting killed before it gets a reliable answer back from the network.

That's why you should let a service wait on its own thread for the answer from the network, and then make it try again if it doesn't succeed. The android service is not only much less likely to get killed before it gets an answer back, but should it really get killed before finishing the job, it can always get revived by AlarmManager to try again.