I have a UIViewController
subclass as a scene in the storyboard that contains a UIScrollView
containing various subviews. One of the subviews is a UIButton
which segues into another scene UIViewController
subclass. When I come back from the view (pop the UIViewController
off the navigation controller stack), I find that the scroll view's origin has somehow changed, although the contentsize
and contentoffset
seem correct.
What's also interesting is that the app has a tab bar, and when I tab away and back to that view, the scroll view is set back correctly with offset at (0, 0).
There is basically no code involved in this process, as it's pretty much all in the storyboard. As I am fairly new to using the storyboard, I figure I'm doing something wrong, although I don't know what. Any ideas as to what that may be? Perhaps sizing issues or constraints?
In iOS 7/8/9 simple self.automaticallyAdjustsScrollViewInsets = NO;
solved the problem in my case.
Try this in viewWillAppear of the view controller you pop back into:
self.scrollView.contentOffset = CGPointMake(0, 0);
Edit: When also adding Peter's code you get the best results with:
- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:YES]; self.scrollView.contentOffset = CGPointMake(0, 0); }
plus
- (void)viewWillDisappear:(BOOL)animated { self.recentContentOffset = self.scrollView.contentOffset; [super viewWillDisappear:animated]; }
and
- (void)viewDidLayoutSubviews { [super viewDidLayoutSubviews]; self.scrollView.contentOffset = CGPointMake(0, self.recentContentOffset.y); }
You return to the original scroll position, have no visual side-effect and the scroll view itself is correctly positioned in its superview (which was a problem) after coming back.
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