harmony 鸿蒙Toggle

2022-08-09
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Toggle

The <Toggle> component provides a clickable element in the check box, button, or switch type.

NOTE

This component is supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

This component can contain child components only when ToggleType is set to Button.

APIs

Toggle(options: { type: ToggleType, isOn?: boolean })

Since API version 9, this API is supported in ArkTS widgets.

Parameters

Name	Type	Mandatory	Description
type	ToggleType	Yes	Type of the toggle.
isOn	boolean	No	Whether the toggle is turned on. The value true means that the toggle is turned on, and false means the opposite. Default value: false Since API version 10, this parameter supports $$ for two-way binding of variables.

ToggleType

Since API version 9, this API is supported in ArkTS widgets.

Name	Description
Checkbox	Check box type. NOTE The default value of the universal attribute margin is as follows: { top: 14 px, right: 14 px, bottom: 14 px, left: 14 px }
Button	Button type. The set string, if any, will be displayed inside the button.
Switch	Switch type. NOTE The default value of the universal attribute margin is as follows: { top: 6px, right: 14px, bottom: 6 px, left: 14 px }

Attributes

In addition to the universal attributes, the following attributes are supported.

Name	Parameter	Description
selectedColor	ResourceColor	Background color of the component when it is turned on. Since API version 9, this API is supported in ArkTS widgets.
switchPointColor	ResourceColor	Color of the circular slider when the component is of the Switch type. NOTE This attribute is valid only when type is set to ToggleType.Switch. Since API version 9, this API is supported in ArkTS widgets.

Events

In addition to the universal events, the following events are supported.

Name	Description
onChange(callback: (isOn: boolean) => void)	Triggered when the toggle status changes. Since API version 9, this API is supported in ArkTS widgets. NOTE If isOn is true, it indicates that the toggle changes from off to on. If isOn is false, it indicates that the toggle changes from on to off.

Example

// xxx.ets
@Entry
@Component
struct ToggleExample {
  build() {
    Column({ space: 10 }) {
      Text('type: Switch').fontSize(12).fontColor(0xcccccc).width('90%')
      Flex({ justifyContent: FlexAlign.SpaceEvenly, alignItems: ItemAlign.Center }) {
        Toggle({ type: ToggleType.Switch, isOn: false })
          .selectedColor('#007DFF')
          .switchPointColor('#FFFFFF')
          .onChange((isOn: boolean) => {
            console.info('Component status:' + isOn)
          })

        Toggle({ type: ToggleType.Switch, isOn: true })
          .selectedColor('#007DFF')
          .switchPointColor('#FFFFFF')
          .onChange((isOn: boolean) => {
            console.info('Component status:' + isOn)
          })
      }

      Text('type: Checkbox').fontSize(12).fontColor(0xcccccc).width('90%')
      Flex({ justifyContent: FlexAlign.SpaceEvenly, alignItems: ItemAlign.Center }) {
        Toggle({ type: ToggleType.Checkbox, isOn: false })
          .size({ width: 20, height: 20 })
          .selectedColor('#007DFF')
          .onChange((isOn: boolean) => {
            console.info('Component status:' + isOn)
          })

        Toggle({ type: ToggleType.Checkbox, isOn: true })
          .size({ width: 20, height: 20 })
          .selectedColor('#007DFF')
          .onChange((isOn: boolean) => {
            console.info('Component status:' + isOn)
          })
      }

      Text('type: Button').fontSize(12).fontColor(0xcccccc).width('90%')
      Flex({ justifyContent: FlexAlign.SpaceEvenly, alignItems: ItemAlign.Center }) {
        Toggle({ type: ToggleType.Button, isOn: false }) {
          Text('status button').fontColor('#182431').fontSize(12)
        }.width(106)
        .selectedColor('rgba(0,125,255,0.20)')
        .onChange((isOn: boolean) => {
          console.info('Component status:' + isOn)
        })

        Toggle({ type: ToggleType.Button, isOn: true }) {
          Text('status button').fontColor('#182431').fontSize(12)
        }.width(106)
        .selectedColor('rgba(0,125,255,0.20)')
        .onChange((isOn: boolean) => {
          console.info('Component status:' + isOn)
        })
      }
    }.width('100%').padding(24)
  }
}

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