Custom NavigationLink SwiftUI

Question

I have a custom NavigationLink in SwiftUI. Now I'm trying to add isActive to my customNavLink but I'm facing with Missing argument for parameter 'isActive' in call across all project. I want to make this isActive optional to use where I need it.

Do you know how could I resolve this issue?

This is My CustomNavLink

struct CusNavLink<Label: View, Destination: View>: View {

    let destination: Destination
    let label : Label
    let isActive: Binding<Bool>

    init(destination: Destination, isActive: Binding<Bool>, @ViewBuilder label: () -> Label) {
        self.destination = destination
        self.label = label()
        self.isActive = isActive
    }

    var body: some View {
        NavigationLink(
            destination: CusNavContainer{
                destination
            }
                .navigationBarHidden(true),
            isActive: isActive,
            label:{
                label
            })
    }
}

jnpdx · Accepted Answer · 2022-04-30 16:36:50Z

If you want isActive to be Optional, you'd have to declare it as such in the initializer and properties. Then, you'd conditionally display a different NavigationLink initializer depending on if you have an isActive Binding to pass it:

struct CusNavLink<Label: View, Destination: View>: View {

    let destination: Destination
    let label : Label
    let isActive: Binding<Bool>?

    init(destination: Destination, isActive: Binding<Bool>? = nil, @ViewBuilder label: () -> Label) {
        self.destination = destination
        self.label = label()
        self.isActive = isActive
    }

    var body: some View {
        if let isActive = isActive {
            NavigationLink(
                destination: CusNavContainer {
                    destination
                }
                .navigationBarHidden(true),
                isActive: isActive,
                label:{
                    label
                })
        } else {
            NavigationLink(
                destination: CusNavContainer {
                    destination
                }
                .navigationBarHidden(true),
                label:{
                    label
                })
        }
    }
}

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