HarmonyOS 如何动态修改@CustomDialog里面的参数？

Question

比如我的弹窗是一个TextTimer倒计时验证码，验证码计时完，text变成“重新发送”字样

Answer 1

可以通过TextTimer的contentModifier属性自定义显示区域,参考以下示例：

@CustomDialog
struct CustomDialogExample {
  controller?: CustomDialogController
  @State myTimerModifier: MyTextTimerModifier = new MyTextTimerModifier()
  textTimerController: TextTimerController = new TextTimerController()
  count:number = 1000*60
  @State format: string = 'ss'
  @State utc: number = 0
  @State elapsedTime: number = 0
  cancel: () => void = () => {
  }
  confirm: () => void = () => {
  }
  build() {
    Column() {
      if ((Math.max(this.count / 1000 - this.elapsedTime))>0){
        TextTimer({isCountDown: true, count: this.count, controller: this.textTimerController})
          .contentModifier(this.myTimerModifier)
          .format(this.format)
          .onAppear(()=>{
            this.textTimerController.start()
          })
          .onTimer((utc: number, elapsedTime: number) => {
            this.elapsedTime = elapsedTime
            console.info('textTimer notCountDown utc is：' + utc + ', elapsedTime: ' + elapsedTime)
          })
      }else {
        Button('重新发送')
          .onClick(()=>{
            this.elapsedTime = 0
            this.textTimerController.start()
          })
      }
    }
  }
}
@Entry
@Component
struct CustomDialogUser {
  dialogController: CustomDialogController | null = new CustomDialogController({
    builder: CustomDialogExample({
      cancel: ()=> { this.onCancel() },
      confirm: ()=> { this.onAccept() }
    }),
    cancel: this.existApp,
    autoCancel: true,
    onWillDismiss:(dismissDialogAction: DismissDialogAction)=> {
      console.info("reason=" + JSON.stringify(dismissDialogAction.reason))
      console.log("dialog onWillDismiss")
      if (dismissDialogAction.reason == DismissReason.PRESS_BACK) {
        dismissDialogAction.dismiss()
      }
      if (dismissDialogAction.reason == DismissReason.TOUCH_OUTSIDE) {
        dismissDialogAction.dismiss()
      }
    },
    alignment: DialogAlignment.Center,
    offset: { dx: 0, dy: -20 },
    customStyle: false,
    cornerRadius: 20,
    width: 300,
    height: 200,
    borderWidth: 1,
    borderStyle: BorderStyle.Dashed,//使用borderStyle属性，需要和borderWidth属性一起使用
    borderColor: Color.Blue,//使用borderColor属性，需要和borderWidth属性一起使用
    backgroundColor: Color.White,
    shadow: ({ radius: 20, color: Color.Grey, offsetX: 50, offsetY: 0}),
  })
  // 在自定义组件即将析构销毁时将dialogController置空
  aboutToDisappear() {
    this.dialogController = null // 将dialogController置空
  }

  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('click me')
        .onClick(() => {
          if (this.dialogController != null) {
            this.dialogController.open()
          }
        }).backgroundColor(0x317aff)
    }.width('100%').margin({ top: 5 })
  }
}


class MyTextTimerModifier implements ContentModifier<TextTimerConfiguration> {
  constructor() {
  }
  applyContent() : WrappedBuilder<[TextTimerConfiguration]>
  {
    return wrapBuilder(buildTextTimer)
  }
}

@Builder function buildTextTimer(config: TextTimerConfiguration) {
  Column() {
        Text((Math.max(config.count / 1000 - config.elapsedTime )+'')).fontSize(22).fontColor(Color.Red)
          .width(100).height(40).borderRadius(10).borderColor(Color.Brown).backgroundColor(Color.Gray)
          .textAlign(TextAlign.Center)
  }
}