CurrencyField

With Currency Field you can create a numerical input field most commonly found in banking apps. The user types in the amount, and the digits fill in from the right. It uses a UITextField for custom input, and a SwiftUI.Text to display the formatted value which allows for easy styling. This also makes it possible to use the .focused() modifier to update its first responder state.

Example:

Installation

Swift Package Manager

dependencies: [
    .package(url: "https://github.com/jtrinc/swiftui-currency-field.git", from: "1.0.0")
]

Sample Usage

import SwiftUI
import CurrencyField

struct Content: View {
    @State private var value: Int = 0

    var body: some View {
        Form {
            HStack {
                Spacer()
                
                CurrencyField(value: $value)
                    .font(.largeTitle.monospaced())
            }
        }
    }
}

• The value assigned is an Int representing the amount in cents.

Using a Custom Number Formatter

import SwiftUI
import CurrencyField

struct Content: View {
    @State private var value = 0
    @State private var chosenLocale = Locale(identifier: "en_CA")

    private var formatter: NumberFormatter {
        let fmt = NumberFormatter()
        fmt.numberStyle = .currency
        fmt.minimumFractionDigits = 2
        fmt.maximumFractionDigits = 2
        fmt.locale = chosenLocale
        return fmt
    }

    private let locales = [
        Locale(identifier: "en_CA"),
        Locale(identifier: "fr_FR"),
        Locale(identifier: "ja_JP"),
    ]

    var body: some View {
        Form {
            Picker(selection: $chosenLocale) {
                ForEach(locales, id: \.self) {
                    if let cc = $0.currencyCode, let sym = $0.currencySymbol {
                        Text("\(cc) \(sym)")
                    }
                }
            } label: {
                Text("Currency")
            }

            CurrencyField(value: $value, formatter: formatter)
        }
    }
}

• Pass in a custom number formatter to support different currencies.

Credits

This package was originally inspired by this tutorial: Currency TextField in SwiftUI

License

CurrencyField is available under the MIT license. See the LICENSE for more info.