自定义弹窗

通过CustomDialogController类显示自定义弹窗。使用弹窗组件时，可优先考虑自定义弹窗，便于自定义弹窗的样式与内容。

说明：

从API Version 7开始支持。后续版本如有新增内容，则采用上角标单独标记该内容的起始版本。

接口

CustomDialogController(value:{builder: CustomDialog, cancel?: () => void, autoCancel?: boolean, alignment?: DialogAlignment, offset?: Offset, customStyle?: boolean, gridCount?: number, maskColor?: ResourceColor, openAnimation?: AnimateParam, closeAniamtion?: AnimateParam})

参数:

CustomDialogController

导入对象

dialogController : CustomDialogController = new CustomDialogController(value:{builder: CustomDialog, cancel?: () => void, autoCancel?: boolean})

说明：CustomDialogController仅在作为@CustomDialog和@Component struct的成员变量，且在@Component struct内部定义时赋值才有效，具体用法可看下方示例。

open()

open(): void

显示自定义弹窗内容，若已显示，则不生效。

close

close(): void

关闭显示的自定义弹窗，若已关闭，则不生效。

示例

// xxx.ets
@CustomDialog
struct CustomDialogExample {
  @Link textValue: string
  @Link inputValue: string
  controller: CustomDialogController
  cancel: () => void
  confirm: () => void

  build() {
    Column() {
      Text('Change text').fontSize(20).margin({ top: 10, bottom: 10 })
      TextInput({ placeholder: '', text: this.textValue }).height(60).width('90%')
        .onChange((value: string) => {
          this.textValue = value
        })
      Text('Whether to change a text?').fontSize(16).margin({ bottom: 10 })
      Flex({ justifyContent: FlexAlign.SpaceAround }) {
        Button('cancel')
          .onClick(() => {
            this.controller.close()
            this.cancel()
          }).backgroundColor(0xffffff).fontColor(Color.Black)
        Button('confirm')
          .onClick(() => {
            this.inputValue = this.textValue
            this.controller.close()
            this.confirm()
          }).backgroundColor(0xffffff).fontColor(Color.Red)
      }.margin({ bottom: 10 })
    }
  }
}

@Entry
@Component
struct CustomDialogUser {
  @State textValue: string = ''
  @State inputValue: string = 'click me'
  dialogController: CustomDialogController = new CustomDialogController({
    builder: CustomDialogExample({
      cancel: this.onCancel,
      confirm: this.onAccept,
      textValue: $textValue,
      inputValue: $inputValue
    }),
    cancel: this.existApp,
    autoCancel: true,
    alignment: DialogAlignment.Default,
    offset: { dx: 0, dy: -20 },
    gridCount: 4,
    customStyle: false
  })

  aboutToDisappear() {
    delete this.dialogController,
    this.dialogController = undefined
  }

  onCancel() {
    console.info('Callback when the first button is clicked')
  }

  onAccept() {
    console.info('Callback when the second button is clicked')
  }

  existApp() {
    console.info('Click the callback in the blank area')
  }

  build() {
    Column() {
      Button(this.inputValue)
        .onClick(() => {
          if (this.dialogController != undefined) {
            this.dialogController.open()
          }
        }).backgroundColor(0x317aff)
    }.width('100%').margin({ top: 5 })
  }
}