Creating a delegate for a UIViewController

Question

I looked through everything and found a lot of people with similar problems, but I still can't get my delegates to work. I want to create a model view manager, and then call a method in the view that made the model look to reject it. So, I have this line:

mergeConfig *view = [[mergeConfig alloc] initWithNibName:@"mergeConfig" bundle:nil]; 

and I'm trying [view setDelegate:self]; as stated on the Apple developer pages , but as expected, in my view of the model there is no setDelegate method.

So I want to know how I can get it to set a delegate? And as soon as I do this, it just automatically passes calls to methods on methods in the parent view with the same name? Apple pages do not indicate which code to enter into the model view controller.

Answer 1

You need to define a delegate on your custom view controller, for example:

 @interface mergeConfig { id delegate; } @property (nonatomic, assign) id delegate; @end @implementation mergeConfig @synthesize delegate; @end 

Then, in another place in the class for your view controller, you can reference any methods that you need for your delegate.

Personally, I like to improve the above by defining the protocol that my delegates execute, as follows:

 @protocol MyDelegateProtocol - (void)delegateMethod; @end @interface mergeConfig { id<MyDelegateProtocol> delegate; } @property (nonatomic, assign) id<MyDelegateProtocol> delegate; @end @implementation mergeConfig @synthesize delegate; @end 

Answer 2

If you just need to reject the modal view controller, just call [self.parentViewController dismissModalViewControllerAnimated:YES]; at the appropriate time. There is no need for delegates unless you need to pass information to the chain.