uiviewcontroller life cycle

application  - AppDelegate
viewDidLoad
viewWillAppear
viewDidAppear
applicationDidBecomeActive  - AppDelegate
applicationWillResignActive - AppDelegate

home click
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applicationDidEnterBackground - AppDelegate
applicationWillEnterForeground - AppDelegate

again open app from icon click
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applicationDidBecomeActive - AppDelegate
applicationWillResignActive - AppDelegate

app killed by using running apps
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applicationWillTerminate - AppDelegate


viewDidLoad  -  oncreate
viewWillAppear  - onresume
viewDidAppear  - onresume
viewWillDisappear - onpause ( these will called when open another controller, not at home click )

viewDidDisappear - ondestroy ( these will called when open another controller , not at home click)