read UI correct frame with Autolayout

Question

I have a UIViewController with UIScrollView inside. The scroll view automatically adjust its frame according with device screen. My problem is that in the code I can't read the correct frame of scroll view. self.scrollView.frame always return {{0, 0}, {600, 600}} that's the default size of view controller in Interface Builder xib.

I have tried in viewDidLoad and in loadView methods but the frame is still {{0, 0}, {600, 600}}.

- (void)viewDidLoad {

    [super viewDidLoad];

    self.scrollView.pagingEnabled = YES;
    self.scrollView.delegate = self;

    NSLog(@"%@",NSStringFromCGRect(self.scrollView.frame));
}

Ideas ?

Probably calling it before AutoLayout has run. Post your code — Simon McLoughlin, Feb 17 '15 at 10:53
possible duplicate of [iOS AutoLayout - get frame size width](http://stackoverflow.com/questions/12527191/ios-autolayout-get-frame-size-width) — Simon McLoughlin, Feb 17 '15 at 10:56

score 1 · Answer 1 · answered Feb 17 '15 at 10:56

1

You can get the correct frame in the -(void)viewDidLayoutSubviews methods of your viewController

answered Feb 17 '15 at 10:56

Tekaya Marouene

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It works but `-(void)viewDidLayoutSubviews` is called twice. Instead `viewDidAppear` is called once – Fry Feb 17 '15 at 10:59
1

this method is called n times where n is the number of the view layout. – Tekaya Marouene Feb 17 '15 at 11:08

score 0 · Answer 2 · answered Feb 17 '15 at 11:18

0

when ever you need correct frame after apply layout constraints
write below two lines

[self.view setNeedsLayout];
[self.view layoutIfNeeded];

answered Feb 17 '15 at 11:18

Jageen

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read UI correct frame with Autolayout

2 Answers2