My application is not resuming to previous state when it is reopen Although its working well when a call is recieved or other application is open and then closed it comes in front
but
when HOME_KEY is pressed it start from first activity.
It not happened on Emulator it Happens only on device
It happens from any activity among many activities in my app
Do you reimplement the onResume() method in your activity?
I'm not sure what state you need to restore, but perhaps Saving Android Activity state using Save Instance State might help (duplicate?)?
You are familiar with the activity lifecycle?