<button 
    open-type="addCalendarEvent"
    bindaddcalendarevent="eventHandler" 
    data-calendar-options="{{calendarOptions}}"
>
  写日系统日历
</button>

Page({
  data: {
    calendarOptions: {
      title: "事件标题",
      startTime: new Date("2023-08-20T12:00:00").getTime() / 1000,
      endTime: new Date("2022-08-21T12:00:00").getTime() / 1000,
      description: "事件描述",
      location: "事件地址",
      alarm: true,
      alarmOffset: 5,
    },
  },
  eventHandler(e) {
    if (e.detail.errNo) {
      console.log("添加日历事件失败", e.detail);
    } else {
      console.log("添加日历事件成功");
    }
  },
});