iOS find out when a user closes the app from the background?
126332
iOS how to detect when app was removed from process
120365
Display notification whenever app is running or not
78757
What's the best way to detect when the app is entering the background for my view?
98310
How can I tell if Android app is running in the foreground?
136460
Best way to detect when a user leaves a web page?
111002
Possible to get SMS/text message notification when process ends or is killed?
152173
Is there any way to use window.onbeforeunload on Mobile Safari for iOS devices?
144839
Exit application in iOS 4.0
153604
How do I detect when someone shakes an iPhone?
157593
Is it possible to get app id from iOS application programmatically?
89860
Why is it better for an iPhone’s battery to NOT close down apps?
143520
Detecting the call events in ios
87739
How to get the status of bluetooth (ON/OFF) in iphone programmatically
111562
How to make NSTimer and some operations keep working on background?
97719
iphone app allow background music to continue to play
111618
How do I check the progress of Badblocks if it's running in the background?
151099
How can I keep an app open in the background?