Custom View centerX not working

[Shawkaine]

My customView is a view which contains a UIImageView and a label above both centering, and I return it at - (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView

However, the view's x is 0 instead of center, y works fine.

I tried to modify it in - (void)setupConstraints { ... if (_customView) {
using

 [self.contentView addConstraint:[self.contentView equallyRelatedConstraintWithView:_customView attribute:NSLayoutAttributeCenterX]];

the customView's right became clinging to the content view. Then I tried below

 if (_customView) {
        CGFloat padding = self.bounds.size.width/2-_customView.bounds.size.width/2;
        
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-(padding@750)-[customView(>=10)]-(padding@750)-|" options:0 metrics:@{@"padding":@(padding)} views:@{@"customView":_customView}]];

This worked.

But it's really weird that I have to go through all this, did I do something wrong? Or is there a bug?

[KeymonWong]

My customView is a view which contains a UIImageView and a label above both centering, and I return it at - (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView

However, the view's x is 0 instead of center, y works fine.

I tried to modify it in - (void)setupConstraints { ... if (_customView) {
using

 [self.contentView addConstraint:[self.contentView equallyRelatedConstraintWithView:_customView attribute:NSLayoutAttributeCenterX]];

the customView's right became clinging to the content view. Then I tried below

 if (_customView) {
        CGFloat padding = self.bounds.size.width/2-_customView.bounds.size.width/2;
        
        [self.contentView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-(padding@750)-[customView(>=10)]-(padding@750)-|" options:0 metrics:@{@"padding":@(padding)} views:@{@"customView":_customView}]];

This worked.

But it's really weird that I have to go through all this, did I do something wrong? Or is there a bug?

- (UIView *)customViewForEmptyDataSet:(UIScrollView *)scrollView, when u use this method to create a custom view, u should remember to use Autolayout to layout your subviews, such as using Masonry, Because inner DZNEmptyDataSet use NSLayoutConstraint to layout view.