ios - How to check whether the ViewController is popped or pushed without using the BOOL variable? -


how check whether viewcontroller popped or pushed without using bool variable ? there inbuilt method tells whether si popped or pushed ??

if (self.navigationcontroller != nil) {     // can pop }

or views.

nsarray* views = [mynavigationcontroller viewcontrollers];  [views objectatindex:0] //will root

and can check current root or not

if(self == [views objectatindex:0]) //yes root


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