Question

how do I ensure a custom UIView I have is repositioned properly after an orientation change of the iPhone?

Background

• As a parent view I have a UIViewController with an XIB
• I have a custom UIView which is used in this parent (inserted in the XIB via Interface Builder). It programmatically at init creates some UIImageView’s and adds them via “self addSubview”, and then positions them via “self addSubview:imageView1” type approach

So the questions are how do I ensure I get the correct layout of these as orientation changes. Specifically:

1. Where do I trigger any such redrawing of the custom UIView? (e.g. is there a method in the parent UIViewController I should be using to trigger from?)

2. When the trigger occurs how do I request the redraw of the custom UIView? Do I need a custom method I create myself like “relayoutCustomView”? or should I be able to use an existing method in the custom UIView, in which case do I need to make sure in the custom UIView that my layout code is in a particular method?

thanks

Answer 1

how’s this for the answer – seems to be starting to work, not sure if it’s the best way:

1. separate out the layout code in my custom view and put in a separate method and make this public
2. this method will be called from within the custom view “init” method upon setup
3. also now however create an “didRotateFromInterfaceOrientation” method in the parent, and from within here also call into the new custom view layout method mentioned in [1]
4. noted it had to be “didRotateFromInterfaceOrientation”, as with the “didRotateFromInterfaceOrientation” method it didn’t work as the self.bounds result hadn’t yet changed

How does this sound? I didn’t use the “setNeedsDisplay” anywhere…