A closed range that describes the upper and lower bounds permitted by the stepper.
step
The amount to increment or decrement value each time the user clicks or taps the stepper’s increment or decrement button, respectively. 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.
Discussion
議論
Use Stepper(_:value:in:step:onEditingChanged:) to create a stepper that increments or decrements a value within a specific range of values by a specific step size. In the example below, a stepper increments or decrements a binding to value over a range of 1...50 by 5 each time the user clicks or taps the stepper’s increment or decrement buttons:
structStepperView: View {@Stateprivatevar value =0let step =5let range =1...50var body: someView {Stepper("Current: \(value) in \(range.description) stepping by \(step)", value: $value, in: range, step: step) .padding(10) }}