HarmonyOS API：全局UI方法

// xxx.ets
@Entry
@Component
struct AlertDialogExample {
  build() {
    Column({ space: 5 }) {
      Button('one button dialog')
        .onClick(() => {
          AlertDialog.show(
            {
              title: 'title',
              message: 'text',
              autoCancel: true,
              alignment: DialogAlignment.Bottom,
              offset: { dx: 0, dy: -20 },
              gridCount: 3,
              confirm: {
                value: 'button',
                action: () => {
                  console.info('Button-clicking callback')
                }
              },
              cancel: () => {
                console.info('Closed callbacks')
              }
            }
          )
        })
        .backgroundColor(0x317aff)
      Button('two button dialog')
        .onClick(() => {
          AlertDialog.show(
            {
              title: 'title',
              message: 'text',
              autoCancel: true,
              alignment: DialogAlignment.Bottom,
              gridCount: 4,
              offset: { dx: 0, dy: -20 },
              primaryButton: {
                value: 'cancel',
                action: () => {
                  console.info('Callback when the first button is clicked')
                }
              },
              secondaryButton: {
                value: 'ok',
                action: () => {
                  console.info('Callback when the second button is clicked')
                }
              },
              cancel: () => {
                console.info('Closed callbacks')
              }
            }
          )
        }).backgroundColor(0x317aff)
    }.width('100%').margin({ top: 5 })
  }
}

@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',
            message: 'message',
            autoCancel: true,
            confirm: {
              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%')
  }
}

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

// 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 })
  }
}