Harmony NEXT中，如何为ArkTS组件实现自定义的日历和提醒功能？

Question

Harmony NEXT中，如何为ArkTS组件实现自定义的日历和提醒功能？
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Answer 1

鸿蒙有日历的三方库可参考，该三方库包含日历的完整功能。日历三方库
鸿蒙也有系统API---calendarManager可实现。

// 获取上下文mContext
// 获取日历管理器calendarMgr
// 该文件为系统生成，目录：entry/src/main/ets/entryability/EntryAbility.ets
import {
  abilityAccessCtrl,
  AbilityConstant, common, PermissionRequestResult, Permissions, UIAbility, Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { calendarManager } from '@kit.CalendarKit';
import { window } from '@kit.ArkUI';

export let calendarMgr: calendarManager.CalendarManager | null = null;
export let mContext: common.UIAbilityContext | null = null;
export default class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
    console.info("Ability onCreate");
  }

  onDestroy(): void {
    console.info("Ability onDestroy");
  }

  onWindowStageCreate(windowStage: window.WindowStage): void {
    // Main window is created, set main page for this ability
    console.info("Ability onWindowStageCreate");

    windowStage.loadContent('pages/Index', (err, data) => {
      if (err.code) {
        console.error(`Failed to load the content. Code: ${err.code}, message: ${err.message}`);
        return;
      }
      console.info(`Succeeded in loading the content. Data: ${JSON.stringify(data)}`);
    });
    mContext = this.context;
    const permissions: Permissions[] = ['ohos.permission.READ_CALENDAR', 'ohos.permission.WRITE_CALENDAR'];
    let atManager = abilityAccessCtrl.createAtManager();
    atManager.requestPermissionsFromUser(mContext, permissions).then((result: PermissionRequestResult) => {
      console.log(`get Permission success, result: ${JSON.stringify(result)}`);
      calendarMgr = calendarManager.getCalendarManager(mContext);
    }).catch((error: BusinessError) => {
      console.error(`get Permission error, error. Code: ${error.code}, message: ${error.message}`);
    })
  }

  onWindowStageDestroy(): void {
    // Main window is destroyed, release UI related resources
    console.info("Ability onWindowStageDestroy");
  }

  onForeground(): void {
    // Ability has brought to foreground
    console.info("Ability onForeground");
  }

  onBackground(): void {
    // Ability has back to background
    console.info("Ability onBackground");
  }
}