How to assign an optional Binding parameter in SwiftUI?

Question

I\'m trying to build a custom NavBar with some optional Views, like a searchbar (but only if the view needs to display it).

I need to pass

Answer 1

What you want is an Optional Binding of a String, not a Binding of an Optional String. I don't think you can achieve that by using the @Binding annotation.

However, you don't need to used the annotation. You can just declare the variable as a Binding:

Your

@Binding var searchTxt: String?;

then turns to this

var searchTxt: Binding

But this way the syntax lets you place the ? wherever you want. So if you move it to the end, after the Binding's closing tag, you have what you want.

var searchTxt: Binding?

If you want to access the String inside your Binding, you have to use the wrappedValue property.

Text(searchTxt!.wrappedValue)