Sunday, November 6, 2016

Why don't mobile apps have a 'close' button?



I'm a fairly new user of Android and i'm annoyed by the fact that almost all apps lack a "close" button.


Is there any reason why developers don't make such an option?



Answer



The major mobile touch screen operating systems (iOS, Windows Phone 7, Android) don't trouble the user with "closing" applications in the way that desktop applications do. This simplifies the experience, making applications appear seamlessly built into the operating system.


Typically, applications on these operating systems will "pause" when the user returns to another application or the home screen, using no CPU time but remaining "asleep" in memory. If the current application needs more memory, the operating system closes down the least used application, freeing up memory that can be used by the foreground application.


The answer is: you simply don't need to close applications manually on modern mobile operating systems.


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