如何在ios11中修复导航栏标题位置 [英] How can I fix the navigationbar title position in ios11

问题描述

这是代码

[self presentViewController:viewController animated:YES completion:nil];

viewController是UIImagePickerController

当我在viewController中发言时，navigationbar标题发生了变化.

When I presented in viewController, navigationbar title shifted.

请检查图像.

有人知道我该如何解决吗?

Does anyone know how can I fix it?

推荐答案

您需要给titleView设置约束，因为iOS11导航栏中的约束正在播放约束，而不是像以前那样播放帧，

You need to give a constraint to titleView, from iOS11 navigation bar is playing with constraint instead of frames like before so,

public extension UIView {
//From iOS 11 -> UIBarButtonItem uses autolayout instead of dealing with frames. so adding contraint for the barbuttonItem
public func applyNavBarConstraints(size: (width: CGFloat, height: CGFloat)) {
    if #available(iOS 11.0, *) {
        let widthConstraint = self.widthAnchor.constraint(equalToConstant: size.width)
        let heightConstraint = self.heightAnchor.constraint(equalToConstant: size.height)
        heightConstraint.isActive = true
        widthConstraint.isActive = true
    }
}}

并按如下所示使用它:

navigationItem.titleView.applyNavBarConstraints(size: (width: viewWidth, height: viewHeight))

希望这会有所帮助！

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