Initializer

init(value:step:onEditingChanged:label:)

Creates a stepper configured to increment or decrement a binding to a value using a step value you provide.

Declaration 宣言

init<V>(value: Binding<V>, step: V.Stride = 1, onEditingChanged: @escaping (Bool) -> Void = { _ in }, label: () -> Label) where V : Strideable

Available when Label conforms to View. LabelがViewに準拠する場合に利用可能です。

Parameters パラメータ

value: The Binding to a value that you provide.
step: The amount to increment or decrement value each time the user clicks or taps the stepper’s increment or decrement buttons. Defaults to 1.
onEditingChanged: A closure that’s called when editing begins and ends. For example, on iOS, the user may touch and hold the increment or decrement buttons on a stepper which causes the execution of the onEditingChanged closure at the start and end of the gesture.
label: A view describing the purpose of this stepper.

Discussion 議論

Use this initializer to create a stepper that increments or decrements a bound value by a specific amount each time the user clicks or taps the stepper’s increment or decrement buttons.

In the example below, a stepper increments or decrements value by the step value of 5 at each click or tap of the control’s increment or decrement button:

struct StepperView: View {
    @State private var value = 1
    let step = 5
    var body: some View {
        Stepper(value: $value,
                step: step) {
            Text("Current value: \(value), step: \(step)")
        }
            .padding(10)
    }
}

A view displaying a stepper that increments or decrements a value by

init(value:step:onEditingChanged:label:)

Declaration 宣言

Parameters パラメータ

Discussion 議論

See Also 参照

Deprecated Initializers