Hiding back button in viewDidLoad without animation

Question

I'm using navigationItem.setHidesBackButton(true, animated:false) to hide back button in my iOS10 app in viewDidLoad. When I do this, on navigation bar, back button label is briefly shown (it is fading out) in presenting animation instead not showing it at all, after screen change, button is gone.

How I can prevent it from happening?

Answer 1

Suppose you are going from Controller A to Controller B. Currently you are applying self.navigationItem.hidesBackButton = true in the viewDidLoad of Controller B.

Add this very same code when you are pushing from A to B in Controller A's viewWillDisappear OR prepareForSegue (if you are using segue)

-(void)viewWillDisappear:(BOOL)animated{
     self.navigationItem.hidesBackButton = true;
}

A safer option is in prepareForSegue as viewWillDisappear will get called whenever this Controller A is going OFF-SCREEN. But in prepareForSegue, you can check that the following code will work only when its going from Controller A to Controller B, by the following

Suppose the segue connecting from Controller A to Controller B is named "SEGUE_NAME"

 -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
    if([[segue identifier]isEqualToString:@"SEGUE_NAME"]){
       /*
        this means it is going from Controller A to Controller B
        via segue "SEGUE_NAME"
      */
      self.navigationItem.hidesBackButton = YES;
     }
  }

I think this would be the swift version : Forgive me if the syntax isn't appropriate

 override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if(segue.identifier == "SEGUE_NAME"){
        self.navigationItem.hidesBackButton = true;
    }
 }