请帮忙：类型'()'不能符合'View'； 只有结构/枚举/类类型可以符合协议

Question

I am trying to write code containing an If statement which depends on the responses entered by user for a series of questions. Different responses will add different values to variable "Score". My code is fairly simple, but I cannot figure why the error message "Type '()' cannot conform to 'View'; only struct/enum/class types can conform to protocols" keeps popping up around my If statement. The If statement is at the very end. Thank you to anyone who is willing to help!

import SwiftUI

struct InfluenceLevel: View {
    @State private var name = ""
    @State private var age = "0"
    @State private var gender = ""
    @State private var nationality = ""
    @State private var Instagram = ""
    @State private var Celebrities = ""
    @State private var Time = ""
    @State private var products = ""
    @State private var score = 0

    
    var body: some View {
        VStack {
            Text("Please fill out the following questions to the best of your ability, allowing us to assess your susceptibility to advertising on social media")

            Form{
                Group{
                    
                    
                    
                    Text("What is your gender? \(gender)" )
                    TextField("(Male/Female/Other):", text: $gender)
                    
                    
                    
                    Text("Are you Chinese? \(nationality)" )
                    TextField("(Yes/No):", text: $nationality)
                    
                    
                    Text("Do you use Instagram? \(Instagram)" )
                    TextField("(Yes/No):", text: $Instagram)
                }
                Group{
                    
                    Text("Do you mainly follow celebrities on social media? \(Celebrities)" )
                    TextField("(Yes/No):", text: $Celebrities)
                    
                
                    Text("Do you spend less than an hour on social media every day? \(Time)" )
                    TextField("(Yes/No)", text: $Time)
                    
                    Text("Do you use more than half of your monthly expenditure on stuff seen online? \(products)" )
                    TextField("(Yes/No)", text: $products)
                    
                    
                
                
                }
            }
        }
            .navigationBarTitle("Level of Influence")
        if gender == "Male" {
            score = score + 1
        }
    }
}

struct InfluenceLevel_Previews: PreviewProvider {
    static var previews: some View {
        InfluenceLevel()
    }
}

Answer 1

Try this:

enum GenderEnum: Int {
    case female, male, other
    
    init(str: String) {
        switch str {
        case "Male":
            self = .male
        case "Female":
            self = .female
        default:
            self = .other
        }
    }
}

struct InfluenceLevel: View {
    @State private var gender = ""
    @State private var score = 0

    
    var body: some View {
                
        let binding = Binding<String>(get: {
                    self.gender
                }, set: {
                    self.gender = $0
                    score = GenderEnum(str: $0).rawValue
                    print(score)
                })
        
        VStack {
            Text("Please fill out the following questions to the best of your ability, allowing us to assess your susceptibility to advertising on social media")

            Form{
                Group{
                    
                    Text("What is your gender? \(gender)" )
                    TextField("(Male/Female/Other):", text: binding)
            }
        }
        .navigationBarTitle("Level of Influence")
    }
}