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IOS App Solution

A Software application created for use on Apple's iOS-controlled iPhone gadgets. iPhone applications are accessible through the Apple Application Store and are intended to keep running on Apple's iOS portable working framework.

iOS App life cycle

Today will see the iOS App life cycle, primarily on

The App Launch Cycle

The View Controller Life Cycle

The App Launch Cycle

Gives see when you a chance to tap on any application symbol to open any iOS application in your gadget springboard what will happen,

- As a major aspect of the dispatch cycle, the iOS framework makes a procedure and principle string for your application and calls your application's fundamental capacity on that primary string.

- The default fundamental capacity that accompanies your Xcode extend speedily hands control over to the UIKit system, it will instate your application and sets it up to run.

will demonstrate the succession of occasions that happens when an application is propelled into the frontal area

The principle capacity's primary occupation is to hand control to the UIKit system.

The View Controller Life Cycle

Presently let's see once your application is propelled then say your first screen (Root/Home View Controller), how it will stack into the screen at the end of the day the view controller lifecycle order,

In the event that you are making your UI or View automatically then the main technique which gets called is loadView, trailed by viewDidLoad - > viewWillAppear - > viewDidAppear and keeping in mind that moving to the following screen or view Controller the pecking order of strategies resemble viewWillDisappear - > viewDidDisappear - > viewDidUnload

Note: In iOS 6 and later, the viewDidUnload technique is belittled since perspectives are no longer cleaned under low-memory conditions.

viewDidLoad – Called just once amid the underlying heap of interface builder(.xib) record. Starting set up of view controller can be taken care here.

viewWillAppear – This technique gets called just before your view shows up or renders on the screen each time when you explore or switch between various perspectives. Assume on the off chance that you need to overhaul your view distinctive while exchanging forward and backward in view of some necessity for that sort of element changes to the perspectives should be possible here.

viewDidAppear – Once your view stacks totally on screen this strategy gets called and here you can deal with further UI or functionalities w.r.t your view controller like database call or whatever you need to do in the wake of stacking your view.

viewWillDisappear - This strategy is called before the view is really evacuated and before any activities are arranged. Advises the view controller that its view is going to be expelled from a view chain of command.

viewDidDisappear - This strategy informs the view controller that its view was expelled from a view progressive system, here you can play out extra assignments related with rejecting or concealing the view.

viewDidUnload - Called when the controller's view is discharged from memory. In iOS 6 and later, clearing references to sets and different questions in your view controller is superfluous. In iOS 6 and later, the viewDidUnload strategy is belittled.

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