In general, applications won't need an "Exit" Button inside Andorid OS. There is a lifecylce for every application where you have certain automatic exit and return or reentry points. This is, onPause, onStop, onDestroy and so on.
If an application is done well, there is no need for an explicit exit button. If it is prgrammed in a way which differs from best practice, chances high that some routines will stay in memory and the OS will encounter problems removing this app from application stack.
I have noticed that if I open the internet on my phone or go to the stock text messaging app, after I close these by hitting on the return back button on bottom right of phone, then when I go into task manager I see that both still show under Active Applications, would you say this is normal so that they start fast when executed? not many other apps seem to be like this and wondered why being curious?
With these not closing in task manager does this have any form of issues to the battery power?EDIT.
It would be most interesting to know how long the lifetime is for both the Internet App and the Stock Messaging App when there is plenty of memory on the phone.
In other words how long it would be before any of the apps disappear from the active apps on Task Manager
I had both on task manager/active apps, I switched off my phone for 10 or so minutes, after switching back on again the active apps had zero showing, so my question is how long would it take for the apps to disappear from the active apps without the need to switch off the phone?
— modified on Mar 31, 2013 5:12:56 PM