Possible Duplicate:
Android, Detect when other apps are launched
When stock calculator is being launched, I want for my application to be launched over top of it. Is this possible?
Possible Duplicate:
Android, Detect when other apps are launched
When stock calculator is being launched, I want for my application to be launched over top of it. Is this possible?
It is possible but the application must be running in the background all the time. This will consume memory and battery life.
Also I don't believe that it morally right to force an end user to use your application.