UPGRADE YOUR SKILLS: Learn advanced Swift and SwiftUI on Hacking with Swift+! >>

Day 19 Challenge, TextField formatting options

Forums > 100 Days of SwiftUI

Hello,

Is there a simple way to format TextField to be empty instead of showing my inputValue while I first launch the app? Currently, I have to delete 0 and than type newValue for conversion. (Or, may be there is a way to delete my default 0 with typing?)

I tried NumberFormatter() option, but it didn't work with my code.

Thank you

2      

I think the easiest way to make custom formatter like this

let numberFormatter: NumberFormatter = {
        let formatter = NumberFormatter()
        formatter.numberStyle = .none
        formatter.zeroSymbol  = ""
        return formatter
    }()

And then use it as usual formatter

TextField("Enter number", value: $number, formatter: numberFormatter)

3      

Thank you!

2      

You can also make the number optional but you then have to unwrap it!

struct ContentView: View {
    @State private var number: Int?

    var displayNumber: Int {
        number ?? 0
    }

    var body: some View {
        VStack {
            Text(displayNumber, format: .number)
                .padding()
            TextField("Enter Number", value: $number, format: .number)
        }
        .padding()
    }
}

2      

TAKE YOUR SKILLS TO THE NEXT LEVEL If you like Hacking with Swift, you'll love Hacking with Swift+ – it's my premium service where you can learn advanced Swift and SwiftUI, functional programming, algorithms, and more. Plus it comes with stacks of benefits, including monthly live streams, downloadable projects, a 20% discount on all books, and free gifts!

Find out more

Sponsor Hacking with Swift and reach the world's largest Swift community!

Archived topic

This topic has been closed due to inactivity, so you can't reply. Please create a new topic if you need to.

All interactions here are governed by our code of conduct.

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.