Swift attribute failing to populate during struct init

Question

I have the following code.

For some reason, when I initalize the VerifyPhoneView class it properly prints the verificationID, but self.verificationID remains the empty the string.

What could be causing this?

struct VerifyPhoneView: View {

    private var phoneNumber: String
    @State private var verificationID: String = ""

    init(phoneNumber: String, verificationID: String) {
        self.phoneNumber = phoneNumber

        print ("Initializer, verificationID: " + verificationID)

        self.verificationID = verificationID
        print ("Initializer, self.verificationID: " + self.verificationID)
    }
}

What if you tried to remove the empty String in verificationID, just like in phoneNumber? — 0-1
– 0-1, Commented May 4, 2020 at 4:12

Asperi · Accepted Answer · 2020-05-04 04:15:57Z

2

In this case no default value for state needed. Here is a solution:

struct VerifyPhoneView: View {

    private var phoneNumber: String
    @State private var verificationID: String    // << here !!
    ...
    init(phoneNumber: String, verificationID: String) {
        self.phoneNumber = phoneNumber

        print ("Initializer, verificationID: " + verificationID)

        _verificationID = State(initialValue: verificationID) // << here !!
        print ("Initializer, self.verificationID: " + self.verificationID)
    }

edited May 4, 2020 at 4:15

answered May 4, 2020 at 4:12

Asperi

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2 Comments

ajf1000 Over a year ago

I tried doing this and it gave me '''self' used before all stored properties are initialized' within the initializer

ajf1000 Over a year ago

Worked, thank you! I'll accept once it allows me to in 5 minutes

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