SwiftUIfullScreenCovernoDetail

我需要幫助。我希望在 fullScreenCover 上顯示詳細視圖，下面的代碼不起作用。通過 RowView 從“dataList”創建模板。使用 NavigationLink 它可以作業。使用 fullScreenCover 這在這里不起作用，資料僅靜態顯示而不是動態顯示。提前感謝您的任何建議。我創建了一個簡單的示例專案來重新創建問題。這是代碼：

import SwiftUI

struct Data: Identifiable  {
    
    var id = UUID()
    var title: String
    var titleSecondScreen: String
}


let dataList = [
    Data(title: "Test1", titleSecondScreen: "Second1"),
    Data(title: "Test2", titleSecondScreen: "Second2"),
    Data(title: "Test3", titleSecondScreen: "Second3"),
    Data(title: "Test4", titleSecondScreen: "Second4"),
    Data(title: "Test5", titleSecondScreen: "Second5"),
]



struct ContentView: View {

    let list: Data
    
    @State private  var fullScreen = false
    @State  var selectedData: Data
    
    
    var body: some View {
        
        ForEach(dataList) { value in
            
            Button {
                fullScreen.toggle()
                selectedData = value
            } label: {
                
                Text(value.title)
                    .padding()
                
            }
        }
        .fullScreenCover(isPresented: $fullScreen) {
            fullScreenView(list: dataList[0])
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView(list: dataList[0], selectedData: dataList[0])
    }
}


struct fullScreenView: View {
    
    let list: Data
    
    @Environment(\.presentationMode) var presentationMode
    
    var body: some View {
        
        
        VStack {
            Text(list.titleSecondScreen)
                .padding()
            
            Button {
                presentationMode.wrappedValue.dismiss()
            } label: {
               Text("Closed FullScreen")
            }
        }
    }
}

struct fullScreenView_Previews: PreviewProvider {
    static var previews: some View {
        fullScreenView(list: dataList[0])
    }
}

這是一個 Github 鏈接：在此處輸入鏈接描述

uj5u.com熱心網友回復：

您可以使用該fullScreen(item:)版本將所選專案發送到FullScreenView.

struct MyData: Identifiable  {
    var id = UUID()
    var title: String
    var titleSecondScreen: String
}

let dataList = [
    MyData(title: "Test1", titleSecondScreen: "Second1"),
    MyData(title: "Test2", titleSecondScreen: "Second2"),
    MyData(title: "Test3", titleSecondScreen: "Second3"),
    MyData(title: "Test4", titleSecondScreen: "Second4"),
    MyData(title: "Test5", titleSecondScreen: "Second5"),
]

struct ContentView: View {
    @State private var selectedData: MyData?
    
    var body: some View {
        ForEach(dataList) { value in
            
            Button {
                selectedData = value
            } label: {
                Text(value.title)
                    .padding()
            }
        }
        .fullScreenCover(item: $selectedData) { item in
            FullScreenView(item: item)
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}


struct FullScreenView: View {
    
    let item: MyData
    
    @Environment(\.presentationMode) var presentationMode
    
    var body: some View {
        VStack {
            Text(item.titleSecondScreen)
                .padding()
            Button {
                presentationMode.wrappedValue.dismiss()
            } label: {
               Text("Close FullScreen")
            }
        }
    }
}

我還做了一些其他的小改動：

1. 使用型別名稱的標準 Swift 大寫
2. 避免使用該型別Data，因為它與正常的 SwiftData型別沖突
3. 去掉listContentView 中未使用的引數

標籤：迅速 代码 迅捷

上一篇：原因：'從主執行緒訪問后，不得從后臺執行緒執行對布局引擎的修改。

下一篇：在Xcode中列出的選擇器