5

I want a custom UIView in my UINavigationBar between a left and a right BarButtonItem but as wide as possible. For this reason I added a UIView in IB to the NavigationBar. With autolayout disabled everything works as expected with the autoresizing masks. But in my storyboard with autolayout enabled I just cann't get it to work. It doesn't look like I can set any constraints in IB for the titleView. If I rotate my device to landscape mode, the UIView has still the same width. What do I have to do so that the titleView fills the space between my UIBarButtonItems with autolayout enabled?

Thank you for any help

Linard

4

2 回答 2

5

我在我的代码中解决了以下问题：

 - (void)willAnimateRotationToInterfaceOrientation:(__unused UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
 {
 [super willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];

    CGSize navigationBarSize = self.navigationController.navigationBar.frame.size;
    UIView *titleView = self.navigationItem.titleView;
    CGRect titleViewFrame = titleView.frame;
    titleViewFrame.size = navigationBarSize;
    self.navigationItem.titleView.frame = titleViewFrame;
 }

我还没有找到另一个解决方案（自动调整大小），但我愿意接受新的和/或更好的解决方案

利纳德

于 2013-08-16T16:17:45.273 回答
-4

您可以在代码中添加约束。

在viewDidLoad中，您可以执行以下操作：

UIView *titleView = [[UIView alloc] initWithFrame:CGRectZero];
self.navigationItem.titleView = titleView;
UIView *titleViewSuperview = titleView.superview;
titleView.translatesAutoresizingMaskIntoConstraints = NO;
[titleViewSuperview addConstraint:[NSLayoutConstraint constraintWithItem:titleView attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:titleViewSuperview attribute:NSLayoutAttributeLeading multiplier:1 constant:0]]; // leading
[titleViewSuperview addConstraint:[NSLayoutConstraint constraintWithItem:titleView attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:titleViewSuperview attribute:NSLayoutAttributeTop multiplier:1 constant:0]]; // top
[titleViewSuperview addConstraint:[NSLayoutConstraint constraintWithItem:titleViewSuperview attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:titleView attribute:NSLayoutAttributeWidth multiplier:1 constant:0]]; // width
[titleViewSuperview addConstraint:[NSLayoutConstraint constraintWithItem:titleViewSuperview attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:titleView attribute:NSLayoutAttributeHeight multiplier:1 constant:0]]; // height
于 2013-10-31T16:22:40.960 回答