CODEWITHSUNDEEP
ios
Jesse Meyer
Jesse Meyer

Reputation: 315

viewWillAppear isn't called as expected

In my application, the data in the input fields across my views change constantly, so each time a view is brought onto the screen I need to run a function to sort what's displayed.

I found -(void)viewWillAppear, but this isn't being called when I press the "back" button which fires off my segue back from my NavController for some reason. I've read a few threads on this and it seems to me it's a bit ambiguous how it works internally.

How can I force a function to fire every time a view is brought on screen?

The code is basically as simple as

.h

@interface view1 : UIViewController

.m 

// ... do stuff in viewDidLoad
//     I added below, but the code never runs through it.
-(void)viewDidAppear
{
    [self.view setNeedsDisplay];
}

Upvotes: 0

Views: 175

Answers (1)

David Hoerl
David Hoerl

Reputation: 41652

Your method signature is wrong - the correct method is:

- (void)viewDidAppear:(BOOL)animated

You don't get any error as you can always define your own method, and its not like this is in a protocol.

Upvotes: 2

Related Questions