在SwiftUI中从导航栏中删除后退按钮文本 [英] Remove back button text from navigationbar in SwiftUI

问题描述

我最近开始在SwiftUI中工作，得出的结论是使用导航还不是很好.我正在尝试实现以下目标.我终于设法摆脱了半透明的背景，而没有导致应用程序崩溃，但是现在我遇到了下一个问题.如何摆脱navbaritem内部的后退"文本?

I've recently started working in SwiftUI, came to the conclusion that working with navigation isn't really great yet. What I'm trying to achieve is the following. I finally managed to get rid of the translucent background without making the application crash, but now I ran into the next issue. How can I get rid of the "back" text inside the navbaritem?

我通过在SceneDelegate.swift文件中设置默认外观来实现上述观点.

I achieved the view above by setting the default appearance in the SceneDelegate.swift file like this.

let newNavAppearance = UINavigationBarAppearance()
newNavAppearance.configureWithTransparentBackground()
newNavAppearance.setBackIndicatorImage(UIImage(named: "backButton"), transitionMaskImage: UIImage(named: "backButton"))
newNavAppearance.titleTextAttributes = [
    .font: UIFont(name: GTWalsheim.bold.name, size: 18)!,
    .backgroundColor: UIColor.white

]

UINavigationBar.appearance().standardAppearance = newNavAppearance

我可以实现此目标的一种可能方法是，覆盖导航栏项目，但这有一个缺点(

One possible way that I could achieve this is by overriding the navigation bar items, however this has one downside (SwiftUI Custom Back Button Text for NavigationView) as the creator of this issue already said, the back gesture stops working after you override the navigation bar items. With that I'm also wondering how I could set the foregroundColor of the back button. It now has the default blue color, however I'd like to overwrite this with another color.

推荐答案

因此，我实际上得到了以下切实可行的解决方案.我正在覆盖导航栏项目，例如

So I actually ended up with the following solution that actually works. I am overwriting the navigation bar items like so

.navigationBarItems(leading:
    Image("backButton")
        .foregroundColor(.blue)
        .onTapGesture {
            self.presentationMode.wrappedValue.dismiss()
    }
)

唯一的问题是后向手势不起作用，因此可以通过实际扩展UINavigationController

The only issue with this was that the back gesture wasn't working so that was solved by actually extending the UINavigationController

extension UINavigationController: UIGestureRecognizerDelegate {
    override open func viewDidLoad() {
        super.viewDidLoad()
        interactivePopGestureRecognizer?.delegate = self
    }

    public func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return viewControllers.count > 1
    }
}

现在，它看起来完全符合我的要求，该解决方案有点笨拙……但它现在可以正常运行，希望SwiftUI能够成熟一点，以便更轻松地完成此工作.

Now it's looking exactly the way I want it, the solution is kinda hacky... but it works for now, hopefully SwiftUI will mature a little bit so this can be done easier.

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