I am rewriting my app that randomises the numbers from the set for SwiftUI with Combine.

import SwiftUI
import Combine

private final class SomeViewState: ObservableObject {
        
        @Published var resultString = ""
        
    }
    
    struct SomeContent: View {
        
        @StateObject private var state = SomeViewState()
        
        func iterateAndRemove() -> (Set<Int>, Set<Int>){
            var numbers = Set<Int>(1...50)
            var results = Set<Int>()
            for _ in 1...3{
                let randomNumbers = numbers.randomElement()!
                results.insert(randomNumbers)
                numbers.remove(randomNumbers)
            }
        return (numbers, results)
        }
        
        var body: some View {
            VStack{
                Text("Some Text")
                    (...)
                
                Text($state.resultString)
                    .multilineTextAlignment(.center)
                    .frame(width: 195, height: 70)
                    .background(Rectangle().fill(Color.white).shadow(radius: 3))
                    .padding()
                
                Button("Randomise") {
                
                    let runFunction = iterateAndRemove()
                    theResult = runFunction.1
                    state.resultString = theResult.map(String.init).joined(separator: ", ")
                    
                }.padding()

As stated in the title I get the

Initializer 'init(_:)' requires that 'Binding<String>' conform to 'StringProtocol' SwiftUI Text

error. The only solutions I found in the Internet were for when the button throws such an error. Please help!

CodePudding user response：

Text displays an immutable String, hence it's initialiser takes a String, not a Binding<String>.

So inject the String, not a Binding to it.

Text(state.resultString)

Moreover, @State should only be used on Views. resultString should be @Published, not @State.