SwiftUI中的錯誤訊息：型別'()->()'不能符合'ShapeStyle'-有解無憂

我為應用程式內部的指令寫了一個擴展，寫了一個錯誤后：

Type '() -> ()' cannot conform to 'ShapeStyle'

這是擴展本身，這是錯誤：

extension View{
    //MARK: - Custom Spotlight Modefier
    func spotlight(enabled: Bool, title: String = "")->some View{ 
        return self  //Error Message: Type '() -> ()' cannot conform to 'ShapeStyle'
            .overlay{
                if enabled{
                    //To Get the Current Content Size
                    GeometryReader{proxy in
                        let rect = proxy.frame(in: .global)
                        
                        SpotlightView(rect: rect, content: title){
                            self
                        }
                    }
                }
            }
    }
    
    //MARK: - Screen Bounds
    func screenBound()->CGRect{ }

    //MARK: - Root Controller
    func rootController()->UIViewController{ }
}

顯示指令所需的結構

struct SpotlightView<Content: View>: View{
    var content: Content
    var title: String
    var rect: CGRect

    init(rect: CGRect ,title: String, @ViewBuilder content: @escaping ()->Content){
        self.content = content()
        self.title = title
        self.rect = rect
    }

    @State var tag: Int = 1009

    var body: some View{
        Rectangle()
            .fill(.white.opacity(0.02))
            .onAppear {
                addOverlayView()
            }
            .onDisappear{
                removeOverlayView()
            }
    }

    //MARK: - Removing the overlay when over view disappeared
    func removeOverlayView(){ }

    //MARK: - Adding An Extra View over the Current View
    func addOverlayView(){ }

    @ViewBuilder
    func overlaySwiftUIView()->some View{ }

    //MARK: - Random Number for Tag
    func generateRandom()->Int{ }

uj5u.com熱心網友回復：

在您對的擴展中View，在這一行中，SpotlightView(rect: rect, content: title)您與初始化程式不匹配。需要3個SpotlightView引數：

rect，型別為 CGRect
標題，字串型別
內容，閉包

您提供：

rect，型別為 CGRect
內容，字串型別
關閉

首先更正對的呼叫SpotlightView，將“內容”替換為“標題”。

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標籤：IOS 迅速代码迅捷

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