Add callbacks to view swiftui

struct MyComponen: View {
    @Binding var alert: String
    var action: (() -> Void)?
    var body: some View {
        VStack {
            Text("Alert: \(alert)")
            if nil != action {
                Button(action: action!) {
                    Text("Action")
                }
            }
        }
    }
}

extension MyComponen {

    func foo(perform action: @escaping () -> Void ) -> Self {
         var copy = self
         copy.action = action
         return copy
     }
}

struct TestCustomModifier: View {
    @State var message = "state 2"
    var body: some View {
        VStack {
            MyComponen(alert: .constant("state 1"))
            MyComponen(alert: $message).foo(perform: {
                print(">> got action")
            })
        }
    }
}

struct TestCustomModifier_Previews: PreviewProvider {
    static var previews: some View {
        TestCustomModifier()
    }
}

Source: stackoverflow.com

Similar codes

0 vote208 views1 answer
Get device height spritekit
Swift
0 vote211 views1 answer
Swift variable in a string
Swift
1 vote206 views1 answer
How to make a image flip swift
Swift
0 vote215 views1 answer
Wkwebview load delegate in swift
Swift
0 vote229 views1 answer
Swift 5 flatMap wtih keypath
Swift
0 vote215 views1 answer
Data source in swift
Swift
0 vote194 views1 answer
Xcode how to get aspect ratio of device
Swift
0 vote217 views1 answer
Remove title only back button swift
Swift
0 vote236 views1 answer
Swift dictionary sorted
Swift
1 vote240 views1 answer
Print document directory path swift
Swift