SwiftUI中的自定义视图可在另一个视图中重用，但需要使该视图更改自定义视图的属性，例如按钮文本颜色

Question

我创建了一个自定义登录视图。我在另一个视图中使用该视图。我希望使用它的视图能够在按钮上设置某种颜色。我尝试通过在初始化中传递颜色来进行此操作，并且能够使它起作用。这感觉不太像swiftui风格。我尝试添加一个方法来代替，然后调用该方法，代码似乎可以运行，但实际上并没有改变颜色。我的问题是我是否使用方法正确执行此操作，这是最好的方法还是应该回到使用init或其他方法。谢谢。

自定义登录视图： ''' 公共结构LoginView：查看{ @ObservedObject var keyboardHandler：KeyboardFollower

select beer, group_concat(distinct name)
from bpb
group by beer
having count(distinct name) > 1

}

'''

我的其他观点： ''' struct ContentView：查看{

@State var username: String = ""
@State var password: String = ""

@Binding var presentingLoginModal: Bool

@ObservedObject var userDefaultsManager = UserDefaultsManager()

let loginService: SoCoLoginService
let defaults = UserDefaults.standard
@State var loginTextButtonColor: Color = Color.blue

public init(loginService: SoCoLoginService, presentingLoginModal: Binding<Bool>) {
        self.keyboardHandler = KeyboardFollower()
        self.loginService = loginService
        self._presentingLoginModal = presentingLoginModal
    }

public var body: some View {
    VStack(content: {
        TextField("Username", text: $username)                
            .autocapitalization(UITextAutocapitalizationType.none).textFieldStyle(RoundedBorderTextFieldStyle())

        SecureField("Password", text: $password) {
            self.loginUser()
        }
            .autocapitalization(UITextAutocapitalizationType.none)
            .textFieldStyle(RoundedBorderTextFieldStyle())

        Button(action: self.loginUser) {
         HStack {
           Text("Log In")
             .font(.body)
             .bold()
             .foregroundColor(loginTextButtonColor)
         }
        }
        .disabled(username.isEmpty || password.isEmpty)
        .padding()

        Toggle(isOn: self.$userDefaultsManager.useFaceID) {
            Text("Use Face ID/Touch ID")
        }
    })
    .onAppear {
        if self.userDefaultsManager.useFaceID {
            let context = LAContext()
            context.localizedCancelTitle = "Enter Username/Password"
            var error: NSError?
            if context.canEvaluatePolicy(.deviceOwnerAuthentication, error: &error) {
                let reason: String
                if (context.biometryType == LABiometryType.faceID) {
                    reason = "Unlock using Face ID"
                } else if (context.biometryType == LABiometryType.touchID) {
                    reason = "Unlock using Touch ID"
                } else {
                    reason = "Log in to your account"
                }
                context.evaluatePolicy(.deviceOwnerAuthentication, localizedReason: reason ) { success, error in

                    if success {
                        do {
                            let credentials = try self.loginService.getCredentialsInKeychain()
                            self.username = credentials.username
                            self.password = credentials.password
                            self.loginUser()
                        } catch KeychainError.unhandledError(let status) {
                          print("Unhandled error of: " + status.description)
                        } catch KeychainError.noPassword {
                          print("No password in keychain")
                        } catch {
                          print("Unexpected error.")
                        }
                    } else {
                        print(error?.localizedDescription ?? "Failed to authenticate")
                    }
                }
            }
        }
    }
    .padding(.bottom, keyboardHandler.keyboardHeight)
    .padding()
}

}

'''