How to call drawRect after an orientation rotation animation is completed

Question

I am trying to use drawRect to draw a rectangle in the space below a collectionView contained in another view (self in the code below) using the frames of both views to define the rectangle.

This code works fine until the device orientation changes. Everything I have tried calls drawRect before the animated rotation begins. This means the collectionView.frame and self.frame have not yet been adjusted by autoLayout and the resulting rectangle is wrong.

CGRect frame = self.collectionViwOutlet.frame;
CGFloat x = frame.origin.x;
CGFloat y = frame.origin.y + frame.size.height + 8;
CGFloat w = frame.size.width;
CGFloat h = self.frame.origin.y + self.frame.size.height - y - 8;
CGRect drawableRect = CGRectMake(x, y, w, h);

Any suggestions would be appreciated.

http://stackoverflow.com/q/2526162/1402846 – Pang Jul 14 '15 at 03:46 — Pang, Jul 14 '15 at 03:46

score 1 · Accepted Answer · edited May 23 '17 at 11:44

1

On your custom UIView override there layoutSubviews, which will be called for you by the system only when needed and when all the variables (orientation, size, etc.)

PS.: Consider it: https://stackoverflow.com/a/19505582/846780

edited May 23 '17 at 11:44

Community

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answered Mar 17 '15 at 22:51

Klevison

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Thank you. This explains the problem. I'm still looking for a way around this. – Carl Carlson Mar 18 '15 at 00:14

How to call drawRect after an orientation rotation animation is completed

1 Answers1