SwiftUI ProgressView 在列表内时不显示

发布于 2025-01-13 02:54:00 字数 673 浏览 0 评论 0原文

在下面的简单示例中，您会发现第一次点击Toggle Loading时，ProgressView按其应有的方式显示，但第二次（第三次点击）则不然。看来是周围的List造成的。

有什么想法以及如何使其发挥作用吗？

struct ContentView: View {

    @State private var isLoading = false

    var body: some View {
        List {
            if isLoading {
                HStack(alignment: .center, spacing: 10) {
                    ProgressView()
                    Text("Loading")
                }
            } else {
                Text("Not Loading")
            }

            Button("Toggle Loading") {
                isLoading.toggle()
            }
        }
    }
}

原文

In the following simple example you will find that the first time you tap Toggle Loading the ProgressView is shown as it should, but the second time (3rd tap) it's not.
It seems to be caused by the surrounding List.

Any ideas what the issue is and how to make it work?

struct ContentView: View {

    @State private var isLoading = false

    var body: some View {
        List {
            if isLoading {
                HStack(alignment: .center, spacing: 10) {
                    ProgressView()
                    Text("Loading")
                }
            } else {
                Text("Not Loading")
            }

            Button("Toggle Loading") {
                isLoading.toggle()
            }
        }
    }
}

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征﹌骨岁月お 2025-01-20 02:54:00

struct ContentView: View {
  
  @State private var isLoading = false
  
  var body: some View {
    List {
      HStack(alignment: .center, spacing: 10) {
        if isLoading {
          ProgressView()
        }
        Text(isLoading ? "Loading" : "Not Loading")
      }
      
      Button("Toggle Loading") {
        isLoading.toggle()
      }
    }
  }
}

struct ContentView: View {
  
  @State private var isLoading = false
  
  var body: some View {
    List {
      HStack(alignment: .center, spacing: 10) {
        if isLoading {
          ProgressView()
        }
        Text(isLoading ? "Loading" : "Not Loading")
      }
      
      Button("Toggle Loading") {
        isLoading.toggle()
      }
    }
  }
}

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