Instance Method インスタンスメソッド

pageCommand(value:in:step:)

Steps a value through a range in response to page up or page down commands.

Declaration 宣言 

func pageCommand<V>(value: Binding<V>, in bounds: ClosedRange<V>, step: V = 1) -> some View where V : BinaryInteger

Parameters パラメータ

value

A Binding to the value to modify when the user pages up or down.

bounds

A closed range that specifies the upper and lower bounds of value.

step

The amount by which to increment or decrement value. Defaults to 1.

Discussion 議論

Use this command to step through sections of a data model associated with a view by providing a binding to a value, a range, and step. If taking another step would cause the value to exceed the bounds, then the value remains unchanged.

On tvOS, the user triggers ‘pageUp’ and ‘pageDown’ commands by pressing a dedicated button on a connected remote. For example, you can let a user page through a TV programming guide using the channel buttons:


struct GuideView: View {
    @State private var pageOffset: Int = 0


    var body: some View {
        GuideContent(at: pageOffset)
            .pageCommand(
                value: $pageOffset,
                in: 0...9,
                step: 1)
    }
}

See Also 参照

Commands

func onExitCommand(perform: (() -> Void)?) -> some View
Sets up an action that triggers in response to receiving the exit command while the view has focus. ビューがフォーカスを持つ間に退出命令を受け取ることに答えて引き起こされるアクションを準備します。
func onPlayPauseCommand(perform: (() -> Void)?) -> some View
Adds an action to perform in response to the system’s Play/Pause command. システムのもつ「再生／一時停止」コマンドに答えて実行するアクションを加えます。
func onCommand(Selector, perform: (() -> Void)?) -> some View
Adds an action to perform in response to the given selector. 与えられたセレクタに答えて実行するあるアクションを加えます。