HarmonyOS 应用开发 —— ArkTS 可复用代码块梳理

@Entry
@Component
struct DialogPage {

  // ...
  build() {
    Row() {
      Column() {
        Button("AlertDialog 警告弹窗")
          .onClick(() => {
            AlertDialog.show({
              message: "Hello",
              primaryButton: {
                value: "取消",
                action: () => {
                  console.log("你点击了取消按钮");
                }
              },
              secondaryButton: {
                value: "确认",
                action: () => {
                  console.log("你点击了确认按钮")
                }
              },
              // 控制显示位置，默认居中
              alignment: DialogAlignment.Bottom,
              // 相对偏移量
              offset: {
                dx: 0,
                dy: 0
              //   dy -20，使弹窗距离屏幕底部 20vp
              }
            })
          })

        Button("日期选择 弹窗")
          .onClick(() => {
            DatePickerDialog.show({
              start: new Date("1900-1-1"),
              end: new Date(),
              selected: new Date("2021-7-1"),
              lunar: false, // 默认公历。 true 表示农历
              onAccept: (value: DatePickerResult) => {
                let year = value.year;
                let month = value.month + 1;
                let day = value.day;
                console.log(`你选择了 ${year}年 ${month}月 ${day}日`);
              }
            })
          })

  // ....
  }
}

// 自定义 dialog
import CommonConstants from '../container/common/constants/CommonConstants';
import HobbyBean from './HobbyBean'

// 上面引入的内容
class HobbyBean {
  label: string
  isChecked: boolean
}

@CustomDialog
export default struct CustomDialogWidget {
  @State hobbyBeans: HobbyBean[] = [];
  @Link hobbies: string;
  private controller: CustomDialogController;

  aboutToAppear() {
    // let Context = getContext(this);
    // let manager = Context.resourceManager;
    // manager.getStringArrayValue($r("app.strarray.hobbies_data"), (err, hoobyResult) => {
    //   hoobyResult.forEach((hobbyItem: string) => {
    //     let hobbyBean = new HobbyBean();
    //     hobbyBean.label = hobbyBean.label;
    //     hobbyBean.isChecked = false;
    //     this.hobbyBeans.push(hobbyBean);
    //   })
    // });
    this.hobbyBeans = [{
      label: "唱",
      isChecked: false
    }, {
      label: "跳",
      isChecked: false,
    }, {
      label: "rap",
      isChecked: false
    }]
    console.log(JSON.stringify(this.hobbyBeans))
  }

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

  // 创建弹窗组件
  build() {
    Column() {
      Text($r("app.string.text_title_hobbies"))
        .fontSize(24)
        .fontWeight(FontWeight.Bold)
      List() {
        ForEach(this.hobbyBeans, (itemHobby: HobbyBean, HobbyBean) => {
          ListItem() {
            Row() {
              Text(itemHobby.label)
                .fontSize(24)
                .fontWeight(FontWeight.Medium)
                .fontStyle(FontStyle.Italic)
              Toggle({ type: ToggleType.Checkbox, isOn: false })
                .onChange((isCheck: boolean) => {
                  itemHobby.isChecked = isCheck;
                })
            }
          }
        }, (itemHobby: HobbyBean) => itemHobby.label)
      }
      Row() {
        Button($r("app.string.cancel_button"))
          .onClick(() => {
            this.controller.close();
          })

        Button("确认")
          .onClick(() => {
            this.setHobbiesValue(this.hobbyBeans);
            this.controller.close();
          })
      }.width(CommonConstants.BUTTON_WIDTH)
      .justifyContent(FlexAlign.Center)

    }
  }

}

   // 定义 builder，实例化一个自定义弹窗
  customDialogController: CustomDialogController = new CustomDialogController({
    builder: CustomDialogWidget({
      hobbies: $hobbies
    }),
    alignment: DialogAlignment.Bottom,
    customStyle: true,
    offset: {dx: 0, dy: -20}
  });

// 使用自定义弹窗
  build() {
    Row() {
        Button("CustomDialog")
          .onClick(() => {
            this.customDialogController.open();
          })
       }
    }

import http from '@ohos.net.http';

class ResponseResult {
  /**
   * Code returned by the network request: success, fail.
   */
  code: string;

  /**
   * Message returned by the network request.
   */
  msg: string | Resource;

  /**
   * Data returned by the network request.
   */
  data: string | Object | ArrayBuffer;

  constructor() {
    this.code = '';
    this.msg = '';
    this.data = '';
  }
}

export function httpRequestGet(url: string): Promise<ResponseResult> {
  let httpRequest = http.createHttp();
  let responseResult = httpRequest.request(url, {
    method: http.RequestMethod.GET,
    readTimeout: Const.HTTP_READ_TIMEOUT,
    header: {
      'Content-Type': ContentType.JSON
    },
    connectTimeout: Const.HTTP_READ_TIMEOUT,
    extraData: {}
  });
  let serverData: ResponseResult = new ResponseResult();
  // Processes the data and returns.
  return responseResult.then((value: http.HttpResponse) => {
    if (value.responseCode === Const.HTTP_CODE_200) {
      // Obtains the returned data.
      let result = `${value.result}`;
      let resultJson: ResponseResult = JSON.parse(result);
      if (resultJson.code === Const.SERVER_CODE_SUCCESS) {
        serverData.data = resultJson.data;
      }
      serverData.code = resultJson.code;
      serverData.msg = resultJson.msg;
    } else {
      serverData.msg = `${$r('app.string.http_error_message')}&${value.responseCode}`;
    }
    return serverData;
  }).catch(() => {
    serverData.msg = $r('app.string.http_error_message');
    return serverData;
  })
}

import notification from '@ohos.notificationManager';

  publishNotification() {
    let notificationRequest: notification.NotificationRequest = { // 描述通知的请求
      id: 1, // 通知ID
      slotType: notification.SlotType.SERVICE_INFORMATION,
      content: { // 通知内容
        contentType: notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT, // 普通文本类型通知
        normal: { // 基本类型通知内容
          title: '通知内容标题',
          text: '通知内容详情',
          additionalText: '通知附加内容', // 通知附加内容，是对通知内容的补充。
        }
      }
    }
    notification.publish(notificationRequest).then(() => { // 发布通知
      console.info('publish success');
    }).catch((err) => {
      console.error(`publish failed, dcode:${err.code}, message:${err.message}`);
    });
  }

struct XX {
  @Styles list() {
    .backgroundColor($r("app.color.default_btn_normal_background"))
    .opacity(1)
  }

  @Styles pressedList() {
    .backgroundColor($r("app.color.default_btn_pressed_background"))
    .opacity(0.8)
  }

build() {

  // ....
            Row() {


            }
            .onClick(() => {
                console.log(`item is => ${item.type}`)
              })
              // 两种写法等价
              // .gesture(
              //   TapGesture()
              //     .onAction(() => {
              //       if (item.type === "FAMILY") {
              //
              //       } else if (item.type === "VERSION_UPADTED") {
              //
              //       }
              //       console.log("click the item " + `${item.type}`)
              //     }))
              .stateStyles({
                normal: this.list,    // 这里很容易写错，不要加括号，不然会报错，不是标准语法！
                pressed: this.pressedList
              })
  // ....

      }
}

      List({ space: 10 }) {
        ForEach(this.tasks, (item: Task, index: number) => {
            ListItem() {
              // ListItem 的内容需要自行填充
              // ...
            }
            .swipeAction({ end: this.DeleteButton(index)})

        }, (item: Task) => JSON.stringify(item))
      }

  @Builder DeleteButton(index: number) {
    Button({ stateEffect: true }) {
      Image($r("app.media.delete"))
        .fillColor(0xffffff)
        .width(20)
    }
    .width(40)
    .height(40)
    .type(ButtonType.Circle)
    .backgroundColor(Color.Red)
    .margin(5)
    .onClick(() => {
      this.tasks.splice(index, 1);
      this.handleTaskChange();
    })
  }