SwiftUI:单击 NavigationLink 时如何做额外的工作? [英] SwiftUI: How to do additional work when clicking a NavigationLink?

问题描述

现在我有一个导航链接

NavigationView {
     NavigationLink(destination: AnotherView())) {
          Text("Click Here")
     }
}
    .navigationBarTitle("SwiftUI")

我想要发生的是，当我单击导航链接时，我希望实例化一个对象并将其放入数据库.

What I want to have happen is that when I click the navigation link, I want an object to instantiated and put into a database.

换句话说，我的问题是:在使用 NavigationLink 时，除了推送新视图之外，您如何执行工作?

My question, in other words, is: how do you perform work aside from just pushing the new view when using NavigationLink?

推荐答案

对于你描述的场景，这里是最简单的方法

For your described scenario here is the simplest way

NavigationView {
     NavigationLink("Click Here", destination: 
         AnotherView()
             .onAppear {
                 // any action having access to current view context
             })
}

这篇关于SwiftUI:单击 NavigationLink 时如何做额外的工作?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！