UIScrollView -setContentInset not working

问题

I've got a fairly straightforward scroll view setup, and I want to get rid of the contentInset.

MyViewController.h

@interface MyViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
@end

MyViewController.m

@interface MyViewController

-(void)viewDidLoad
{
    [super viewDidLoad];

    [self.scrollView setContentInset:UIEdgeInsetsZero];
    ...
}

In my storyboard, my scrollview starts from the bottom of the navbar. Unfortunately, I get the below result when running the app. Seems like the contentInset is still very much alive. I've made the scrollView background green.

EDIT: just providing a pic of the storyboard and the outlet link

回答1:

Ok, so the code

[self.myScrollViewOutlet setContentInset:UIEdgeInsetsZero];

worked only when placed in -(void)viewWillLayoutSubviews.

It did not work in -(void)viewDidLoad, -(void)viewWillAppear:(BOOL)animated or -(void)viewDidAppear:(BOOL)animated.

Hope that helps people in future!

回答2:

Swift 3

In your UIViewController which contains your WebView surprisingly named for example webView.

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews();

    webView.scrollView.contentInset = UIEdgeInsets.zero;
}

来源：https://stackoverflow.com/questions/25714681/uiscrollview-setcontentinset-not-working