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iphonecocoa-touchsuperview

iPhone: calling a parent/super method from a subview

hope someone can help me on this as been stuck for hours.

I am trying to make a kind of picture book. I have a view which is my container and I add subviews to that by using addsubview.

On the subview, I have swipe gestures etc that I want to trigger off method in the parent view. I worked out how to trigger the delegate but I cant get the delegate to trigger the parent view. I have read over 10 different ways of doing it and none work.

I now very confused about what a super view is to. Just to confuse matters, the delegate has a tabcontroller and the parent view is tab button 1

I tried

[self.view.superview method]
[self.superview method]

On the delegate I tried self.tabcontroller.parentviewcontroller, selectedview, super view.super

UPDATE : The subview needs to be independant of the parent view as its a reusable view. Also I have not set the parentview to superview as I just thought a superview is a view with subviews (please don't kill me). So maybe I just need to set the parentview to a superview?

Solution

  • The proper way of doing such things is to use protocol and delegate pattern.

    Define a protocol like

    @protocol subViewDelegate
   -(void)somethingHappened:(id)sender;
@end

    then implement that protocol in your superview :

    @interface superView:UIViewController<subViewDelegate> {
...
}
...
@end

    define a delegate property in your SubView like this

    @interface subView : UIView {
   id<subViewDelegate> delegate;
   ...
}
@propery (nonatomic, assign) id<subViewDelegate> delegate;
...
@end

    the in your subview, call the delegate like this

    [self.delegate somethingHappened :self];