Why my ViewDidLoad Loads every time?

Question

I am Creating a App in which I implemented FB login. So i write a FBLogin button code in my ViewDidLoad in ViewController.m file.

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

FBSDKLoginButton *loginButton = [[FBSDKLoginButton alloc] init];
loginButton.center = self.view.center;
[self.view addSubview:loginButton];

}

but when i ran this code. fb buttons appears in all pages of my app, it means my viewController.m ViewDidLoad method call every time.Why? I am looking for solution last 4 hours but didnt get any result yet. please help me out.

Answer 1

Here is the Answer for my question

I made a small mistake when i inherit all Other ViewControllers and main ViewController class with ViewController. i modified my code with

 @interface ViewController : UIViewController


 @end

instead of

 @interface ViewController : ViewController

 @end

and all other classes too like

   @interface homeViewController : UIViewController

   @interface contestViewController : UIViewController


   @interface menuViewController : UIViewController 

etc.

This simply solved my question. thanks for the help guys.