#鸿蒙通关秘籍#如何在自定义弹窗中实现路由跳转？

import { router } from '@kit.ArkUI';

@CustomDialog
struct CustomDialogExample {
  @Link textValue: string
  controller?: CustomDialogController
  cancel: () => void = () => {
  }
  confirm: () => void = () => {
  }

  build() {
    Column({ space: 20 }) {
      if (this.textValue != '') {
        Text(`第二个页面的内容为：${this.textValue}`)
          .fontSize(20)
      } else {
        Text('是否获取第二个页面的内容')
          .fontSize(20)
      }
      Flex({ justifyContent: FlexAlign.SpaceAround }) {
        Button('cancel')
          .onClick(() => {
            if (this.controller != undefined) {
              this.controller.close()
              this.cancel()
            }
          }).backgroundColor(0xffffff).fontColor(Color.Black)
        Button('confirm')
          .onClick(() => {
            if (this.controller != undefined && this.textValue != '') {
              this.controller.close()
            } else if (this.controller != undefined) {
              router.pushUrl({
                url: 'pages/Index2'
              })
              this.controller.close()
            }
          }).backgroundColor(0xffffff).fontColor(Color.Red)
      }.margin({ bottom: 10 })
    }.borderRadius(10).padding({ top: 20 })
  }
}
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@Entry
@Component
struct CustomDialogUser {
  @State textValue: string = ''
  dialogController: CustomDialogController | null = new CustomDialogController({
    builder: CustomDialogExample({
      cancel: () => {
        this.onCancel()
      },
      confirm: () => {
        this.onAccept()
      },
      textValue: $textValue
    })
  })

  // 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
  }

  onPageShow() {
    const params = router.getParams() as Record<string, string>; // 获取传递过来的参数对象
    if (params) {
      this.dialogController?.open()
      this.textValue = params.info as string; // 获取info属性的值
    }
  }

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

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

  exitApp() {
    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 })
  }
}
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import { router } from '@kit.ArkUI';

@Entry
@Component
struct Index2 {
  @State message: string = '点击返回';

  build() {
    Column() {
      Button(this.message)
        .fontSize(50)
        .fontWeight(FontWeight.Bold).onClick(() => {
        router.back({
          url: 'pages/Index',
          params: {
            info: 'Hello World'
          }
        });
      })
    }.width('100%').height('100%').margin({ top: 20 })
  }
}
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