harmony 鸿蒙Action Sheet

2022-08-09
浏览 (830)

Action Sheet

An action sheet is a dialog box that displays actions a user can take.

NOTE

The APIs of this module are supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.

The functionality of this module depends on UI context. This means that the APIs of this module cannot be used where the UI context is unclear. For details, see UIContext.

Since API version 10, you can use the showActionSheet API in UIContext to obtain the UI context.

ActionSheet.show

show(value: { title: string|Resource, subtitle: Resource, message: string|Resource, confirm?: {enabled?: boolean, defaultFocus?: boolean, style?: DialogButtonStyle, value: string|Resource, action:() => void}, cancel?:()=>void, sheets: Array<SheetInfo>, autoCancel?:boolean, alignment?: DialogAlignment, offset?: { dx: number|string|Resource; dy: number|string|Resource } })

Defines and shows the action sheet.

Parameters

Name	Type	Mandatory	Description
title	Resource \|string	Yes	Title of the dialog box.
subtitle¹⁰⁺	ResourceStr	No	Subtitle of the dialog box.
message	Resource \|string	Yes	Content of the dialog box.
autoCancel	boolean	No	Whether to close the dialog box when the overlay is clicked. Default value: true The value true means to close the dialog box when the overlay is clicked, and false means the opposite.
confirm	{ enabled¹⁰⁺?: boolean, defaultFocus¹⁰⁺?: boolean, style¹⁰⁺?: DialogButtonStyle, value: ResourceStr, action: () => void }	No	Information about the confirm button. enabled: whether to respond when the button is clicked. Default value: true defaultFocus: whether the button is the default focus. Default value: false style: button style. Default value: DialogButtonStyle.DEFAULT value: button text. action: callback upon button clicking.
cancel	() => void	No	Callback invoked when the dialog box is closed after the overlay is clicked.
alignment	DialogAlignment	No	Alignment mode of the dialog box in the vertical direction. Default value: DialogAlignment.Bottom
offset	{ dx: Length, dy: Length }	No	Offset of the dialog box relative to the alignment position.{ dx: 0, dy: 0 }
sheets	Array<SheetInfo>	Yes	Options in the dialog box. Each option supports the image, text, and callback.
maskRect¹⁰⁺	Rectangle	No	Mask area of the dialog box. Events outside the mask area are transparently transmitted, and events within the mask area are not. Default value: { x: 0, y: 0, width: ‘100%’, height: ‘100%’ }

SheetInfo

Name	Type	Mandatory	Description
title	ResourceStr	Yes	Sheet text.
icon	ResourceStr	No	Sheet icon. By default, no icon is displayed.
action	()=>void	Yes	Callback when the sheet is selected.

DialogButtonStyle¹⁰⁺

Name	Description.
DEFAULT	Blue text on white background (black background under the dark theme).
HIGHLIGHT	White text on blue background.

Example

@Entry
@Component
struct ActionSheetExample {
  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
      Button('Click to Show ActionSheet')
        .onClick(() => {
          ActionSheet.show({
            title: 'ActionSheet title',
            subtitle: 'ActionSheet subtitle',
            message: 'message',
            autoCancel: true,
            confirm: {
              defaultFocus: true,
              value: 'Confirm button',
              action: () => {
                console.log('Get Alert Dialog handled')
              }
            },
            cancel: () => {
              console.log('actionSheet canceled')
            },
            alignment: DialogAlignment.Bottom,
            offset: { dx: 0, dy: -10 },
            sheets: [
              {
                title: 'apples',
                action: () => {
                  console.log('apples')
                }
              },
              {
                title: 'bananas',
                action: () => {
                  console.log('bananas')
                }
              },
              {
                title: 'pears',
                action: () => {
                  console.log('pears')
                }
              }
            ]
          })
        })
    }.width('100%')
    .height('100%')
  }
}

en-us_image_action