Text field cuts off last character-CodePudding

so I have a TextField and a SecureField, and both will randomly cut off the last character:

TextField("email address", text: $userInfo.email)
                    .disableAutocorrection(true)
                    .autocapitalization(.none)
                    .keyboardType(.emailAddress)
                    .foregroundColor(Color.buttonText)
            }.textFieldStyle(RoundedBorderTextFieldStyle()).padding().padding(.top, 50)

and

 SecureField("password", text: $userInfo.password)
                    .disableAutocorrection(true)
                    .autocapitalization(.none)
                    .foregroundColor(Color.buttonText)
            }.textFieldStyle(RoundedBorderTextFieldStyle()).padding()

for example, if I entered my email as [email protected] and my password as password123, my print statements in other parts of the code would say [email protected] and password12.

It also says

Binding action tried to update multiple times per frame.

any time I type a key, this might be related. I have only tested on simulators.

edit: user class

class User: ObservableObject{
var id = UUID()
var email : String
var password : String
@Published var loggedIn : Bool 
@Published var image: UIImage = UIImage(named: "user")!

init(email: String = "", loggedIn : Bool = false, password : String = ""){
       self.email = email
       self.loggedIn = loggedIn
       self.password = password
   }

it is an environment object, if that affects it at all.

CodePudding user response：

The user email and password needed @published

CodePudding user response：

Ques:- Binding action tried to update multiple times per frame.

Ans:-

If I decorate my username and password properties with @Published then the message goes away

This is the correct solution. You need to use @Published on those properties because that is how SwiftUI gets notified when the properties change.

the body is rendered each time I type in the TextField

That is fine. Your body method is not expensive to compute.

I don't think I will gain anything from putting the @Published attribute since this is a one-way binding

You cannot be sure SwiftUI will work correctly (now or in future releases) if you don't use @Published. SwiftUI expects to be notified when the value of a Binding changes, even when a built-in SwiftUI component like TextField causes the change.

Ques:- so I have a TextField and a SecureField, and both will randomly cut off the last character

Ans:-

import SwiftUI

struct SecureTextfliedWithEmail: View {
@StateObject var userInfo = User()

var body: some View {
    VStack {
        TextField("email address", text: $userInfo.email)
            .disableAutocorrection(true)
            .autocapitalization(.none)
            .keyboardType(.emailAddress)
            .foregroundColor(Color.red)
            .textFieldStyle(RoundedBorderTextFieldStyle()).padding().padding(.top, 50)
        
        SecureField("password", text: $userInfo.password)
            .disableAutocorrection(true)
            .autocapitalization(.none)
            .foregroundColor(Color.blue)
            .textFieldStyle(RoundedBorderTextFieldStyle()).padding()
        
        Button("Print") {
            print(userInfo.email,userInfo.password)
           }
        }
     }
 }

class User: ObservableObject{
var id = UUID()
@Published var email : String
@Published var password : String
@Published var loggedIn : Bool

init(email: String = "", loggedIn : Bool = false, password : String = ""){
    self.email = email
    self.loggedIn = loggedIn
    self.password = password
  }
}