【HarmonyOS开发】ArkUI中的自定义弹窗

弹窗是一种模态窗口,通常用来展示用户当前需要的或用户必须关注的信息或操作。在弹出框消失之前,用户无法操作其他界面内容。ArkUI 为我们提供了丰富的弹窗功能,弹窗按照功能可以分为以下两类:

  • 确认类:例如警告弹窗 AlertDialog。

  • 选择类:包括文本选择弹窗 TextPickerDialog 、日期滑动选择弹窗 DatePickerDialog、时间滑动选择弹窗 TimePickerDialog 等。

您可以根据业务场景,选择不同类型的弹窗。

参考:OpenHarmony 弹窗文档V4.0

 今天我们主要了解一下自定义弹窗的使用

自定义弹窗

自定义弹窗的使用更加灵活,适用于更多的业务场景,在自定义弹窗中您可以自定义弹窗内容,构建更加丰富的弹窗界面。自定义弹窗的界面可以通过装饰器@CustomDialog 定义的组件来实现,然后结合 CustomDialogController 来控制自定义弹窗的显示和隐藏。

1、定义自定义弹窗

@CustomDialog
struct CustomDialogExample {
  // 双向绑定传值
  @Prop title: string
  @Link inputValue: string
  // 弹窗控制器,控制打开/关闭,必须传入,且名称必须为:controller
  controller: CustomDialogController
  // 弹窗中的按钮事件
  cancel: () => void
  confirm: () => void

  // 弹窗中的内容描述
  build() {
    Column() {
      Text(this.title || "是否修改文本框内容?")
        .fontSize(16)
        .margin(24)
        .textAlign(TextAlign.Start)
        .width("100%")
      TextInput({ 
        placeholder: '文本输入框', 
        text: this.inputValue
      })
        .height(60)
        .width('90%')
        .onChange((value: string) => {
          this.textValue = value
        })
      Flex({ justifyContent: FlexAlign.SpaceAround }) {
        Button('取消')
          .onClick(() => {
            this.controller.close()
            this.cancel()
          }).backgroundColor(0xffffff).fontColor(Color.Black)
        Button('确定')
          .onClick(() => {
            this.controller.close()
            this.confirm()
          }).backgroundColor(0xffffff).fontColor(Color.Red)
      }.margin({ bottom: 10 })
    }
  }
}

2、使用自定义弹窗

@Entry
@Component
struct Index {
  @State title: string = '标题'
  @State inputValue: string = '文本框父子组件数据双绑'
  // 定义自定义弹窗的Controller,传入参数和回调函数
  dialogController: CustomDialogController = new CustomDialogController({
    builder: CustomDialogExample({
      cancel: this.onCancel,
      confirm: this.onAccept,
      textValue: $textValue,
      inputValue: $inputValue
    }),
    cancel: this.existApp,
    autoCancel: true,
    alignment: DialogAlignment.Bottom,
    offset: { dx: 0, dy: -20 },
    gridCount: 4,
    customStyle: false
  })

  aboutToDisappear() {
    this.dialogController = undefined // 将dialogController置空
  }

  onCancel() {
    console.info('点击取消按钮', this.inputValue)
  }

  onAccept() {
    console.info('点击确认按钮', this.inputValue)
  }
  
  build() {
    Column() {
       Button('打开自定义弹窗')
        .width('60%')
        .margin({top:320})
        .zIndex(999)
        .onClick(()=>{
          if (this.dialogController != undefined) {
            this.dialogController.open()
          }
        })
    }
    .height('100%')
    .width('100%')
}

3、一个完整的示例(常用网站选择)

export interface HobbyBean {
  label: string;
  isChecked: boolean;
}

export type DataItemType = { value: string }

@Extend(Button) function dialogButtonStyle() {
  .fontSize(16)
  .fontColor("#007DFF")
  .layoutWeight(1)
  .backgroundColor(Color.White)
  .width(500)
  .height(40)
}

@CustomDialog
struct CustomDialogWidget {
  @State hobbyBeans: HobbyBean[] = [];

  @Prop title:string;
  @Prop hobbyResult: Array<DataItemType>;
  @Link hobbies: string;
  private controller: CustomDialogController;

  setHobbiesValue(hobbyBeans: HobbyBean[]) {
    let hobbiesText: string = '';
    hobbiesText = hobbyBeans.filter((isCheckItem: HobbyBean) =>
    isCheckItem?.isChecked)
      .map((checkedItem: HobbyBean) => {
        return checkedItem.label;
      }).join(',');
    this.hobbies = hobbiesText;
  }

  aboutToAppear() {
    // let context: Context = getContext(this);
    // let manager = context.resourceManager;
    // manager.getStringArrayValue($r('app.strarray.hobbies_data'), (error, hobbyResult) => {
    // });
    this.hobbyResult.forEach(item => {
      const hobbyBean = {
        label: item.value,
        isChecked: this.hobbies.includes(item.value)
      }
      this.hobbyBeans.push(hobbyBean);
    });
  }
  build() {
    Column() {
      Text(this.title || "兴趣爱好")
        .fontWeight(FontWeight.Bold)
        .alignSelf(ItemAlign.Start)
        .margin({ left: 24, bottom: 12 })
      List() {
        ForEach(this.hobbyBeans, (itemHobby: HobbyBean) => {
          ListItem() {
            Row() {
              Text(itemHobby.label)
                .fontSize(16)
                .fontColor("#182431")
                .layoutWeight(1)
                .textAlign(TextAlign.Start)
                .fontWeight(500)
                .margin({ left: 24 })
              Toggle({ type: ToggleType.Checkbox, isOn: itemHobby.isChecked })
                .margin({
                  right: 24
                })
                .onChange((isCheck) => {
                  itemHobby.isChecked = isCheck;
                })
            }
          }
          .height(36)
        }, itemHobby => itemHobby.label)
      }
      .margin({
        top: 6,
        bottom: 8
      })
      .divider({
        strokeWidth: 0.5,
        color: "#0D182431"
      })
      .listDirection(Axis.Vertical)
      .edgeEffect(EdgeEffect.None)
      .width("100%")
      // .height(248)

      Row({
        space: 20
      }) {
        Button("关闭")
          .dialogButtonStyle()
          .onClick(() => {
            this.controller.close();
          })
        Blank()
          .backgroundColor("#F2F2F2")
          .width(1)
          .opacity(1)
          .height(25)
        Button("保存")
          .dialogButtonStyle()
          .onClick(() => {
            this.setHobbiesValue(this.hobbyBeans);
            this.controller.close();
          })
      }
    }
    .width("93.3%")
    .padding({
      top: 14,
      bottom: 16
    })
    .borderRadius(32)
    .backgroundColor(Color.White)
  }
}

@Entry
@Component
struct HomePage {
  @State hobbies: string = '';
  @State hobbyResult: Array<DataItemType> = [
    {
      "value": "FaceBook"
    },
    {
      "value": "Google"
    },
    {
      "value": "Instagram"
    },
    {
      "value": "Twitter"
    },
    {
      "value": "Linkedin"
    }
  ]
  private title: string = '常用网站'
  customDialogController: CustomDialogController = new CustomDialogController({
    builder: CustomDialogWidget({
      hobbies: $hobbies,
      hobbyResult: this.hobbyResult,
      title: this.title
    }),
    alignment: DialogAlignment.Bottom,
    customStyle: true,
    offset: { dx: 0,dy: -20 }
  });

  build() {
    Column() {
      Button('打开自定义弹窗')
        .width('60%')
        .margin({top: 50})
        .zIndex(999)
        .onClick(()=>{
          if (this.customDialogController != undefined) {
            this.customDialogController.open()
          }
        })
      Text(this.hobbies).fontSize(16).padding(24)
    }
    .width('100%')
  }
}

参考:https://gitee.com/harmonyos/codelabs/tree/master/MultipleDialog

猜你喜欢

转载自blog.csdn.net/qq_23334071/article/details/135056005
今日推荐