📦AnyShape

SwiftUI ⟩ shapes ⟩ Shape ⟩ AnyShape

A type-erased shape value. You can use this type to dynamically switch between shape types.

💾 程式

struct MyClippedView: View {

    var isCircular: Bool

    var body: some View {
        ClippedView()
            // ✅ OK (將 Circle 與 Capsule 化為 AnyShape)
            .clipShape(isCircular ? AnyShape(Circle()) : AnyShape(Capsule()))
        ErrorView()
            // 🐞 mismatching types (Circle, Capsule 為不同類型)
            .clipShape(isCircular ? Circle() : Capsule())
    }
}

⭐️ 重點

官方有 AnyShape 這個型別，估計實作方式可能類似下面：

import SwiftUI

struct MyAnyShape: Shape {

    private var wrappedShape: any Shape

    init<S: Shape>(_ wrapped: S) {
        self.wrappedShape = wrapped    // ⭐️ 直接儲存 Shape 實例
    }

    // ⭐️ Shape requirement
    func path(in rect: CGRect) -> Path {
        wrappedShape.path(in: rect)
    }
}

👉 參考： has non-Sendable type 👉 應用： view.clipShape()

📘 手冊

• SwiftUI ⟩ Shapes ⟩ AnyShape

👥 相關

• 🔰 type erasure

⛔ 錯誤

🐞 has non-Sendable type

🐞 mismatching types