harmony 鸿蒙Safe Area

2023-10-30
浏览 (619)

Safe Area

With the expandSafeArea attribute, you can expand a component’s safe area.

NOTE

This attribute is supported since API version 10. Updates will be marked with a superscript to indicate their earliest API version.

Attributes

Name	Parameter	Description
expandSafeArea	type?: Array <SafeAreaType>, edges?: Array <SafeAreaEdge>	Safe area to be expanded to. Default value: type: [SafeAreaType.SYSTEM, SafeAreaType.CUTOUT, SafeAreaType.KEYBOARD], edges: [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM, SafeAreaEdge.START, SafeAreaEdge.END] The default value expands the safe area to all available areas. type: indicates the type of the extended security zone. This parameter is optional. edges: edge for expanding the safe area. This parameter is optional.

Example

Example 1

// xxx.ets
@Entry
@Component
struct SafeAreaExample1 {
  @State text: string = ''
  controller: TextInputController = new TextInputController()

  build() {
    Row() {
        Column()
          .height('100%').width('100%')
          .backgroundImage($r('app.media.bg')).backgroundImageSize(ImageSize.Cover)
          .expandSafeArea([SafeAreaType.SYSTEM], [SafeAreaEdge.TOP, SafeAreaEdge.BOTTOM])
    }.height('100%')
  }
}

expandSafeArea1

Example 2

@Entry
@Component
struct SafeAreaExample {
  @State text: string = ''
  controller: TextInputController = new TextInputController()

  build() {
    Row() {
      Stack() {
        Column()
          .height('100%').width('100%')
          .backgroundImage($r('app.media.bg')).backgroundImageSize(ImageSize.Cover)
          .expandSafeArea([SafeAreaType.KEYBOARD, SafeAreaType.SYSTEM])
        Column() {
          Button('Set caretPosition 1')
            .onClick(() => {
              this.controller.caretPosition(1)
            })
          TextInput({ text: this.text, placeholder: 'input your word...', controller: this.controller })
            .placeholderFont({ size: 14, weight: 400 })
            .width(320).height(40).offset({y: 120})
            .fontSize(14).fontColor(Color.Black)
            .backgroundColor(Color.White)
        }.width('100%').alignItems(HorizontalAlign.Center)
      }
    }.height('100%')
  }
}

expandSafeArea2