Question

(This should be simple. But it has been driving me nuts for many hours.)
I am simply trying to call a ViewController method, from inside its UIView.

myViewController declares and creates a UIView:

myUIView = [[viewCreator alloc] init…];

and my myViewController also has a method:

-(void)inABottle{
    NSLog(@"Hello.");
}

Inside the UIView, a UIButton is created. This button has a ‘selector’ to a method – in the UIView – which then tries to call the ‘inABottle’ method in the ViewController. Inside the UIView:

...
[myButton addTarget:self action:@selector(isPressed) forControlEvents:UIControlEventTouchUpInside];

-(void)isPressed{
    [myViewController inABottle];// <<< This is where I have spent my day.
}

(The ViewController header file is #import ed in the UIView.)

Would really appreciate some help. Surely this should be simples!

Answer 1

Make a property in your view and set it to the current view controller when you create it:

viewcontroller.m:

myUIView = [[viewCreator alloc] init...];
myUIView.myViewController = self;

view.h:

@property (weak) ViewController *myViewController;//weak or assign depending if you are using ARC or not, and ViewController should be the class of your view controller

view.m:

@synthesize myViewController;

Then just call the method like you are in your code in the question.

You should also look into how to use delegates, this is a perfect example of when you should use one.