If an app is forced stop by following the steps Settings->Application->ManageApplications -> --> Force Stop , Does android call the onDestroy of the Activity or the Application ? (If not , Is there any way to know if the application has died due to a force Stop triggered by the User ) .

解决方案

Force stopping the app will kill the entire process (i.e. with Process.killProcess(int pid)). All resources associated with the application will be removed and freed by the kernel. So no, there is no way that you can intercept this action.

When you release your application on the market, the developer console will provide you with stats regarding force closes, crashes, etc. (if that is why you are asking).