---
title: "React Event calendar Public Google Calendar Integration Example | Mobiscroll"
component: "Event calendar"
framework: "React"
library_version: "6.1.5"
url: "https://demo.mobiscroll.com/react/eventcalendar/load-events-from-google-calendar"
---

# Public Google Calendar Integration - React Event calendar demo

Load events from a public Google Calendar into a React event calendar using the integration plugin — provide your Calendar ID and API key. For React and Next.JS.

- [Live demo](https://demo.mobiscroll.com/react/eventcalendar/load-events-from-google-calendar)
- [View React JS code on GitHub](https://github.com/acidb/mobiscroll-demos-react/tree/main/src/demos/eventcalendar/calendar-view/load-events-from-google-calendar)
- [View React TS code on GitHub](https://github.com/acidb/mobiscroll-demos-react-ts/tree/main/src/demos/eventcalendar/calendar-view/load-events-from-google-calendar)
- This demo in other frameworks: [JavaScript](https://demo.mobiscroll.com/javascript/eventcalendar/load-events-from-google-calendar.md), [jQuery](https://demo.mobiscroll.com/jquery/eventcalendar/load-events-from-google-calendar.md), [Angular](https://demo.mobiscroll.com/angular/eventcalendar/load-events-from-google-calendar.md), [Vue](https://demo.mobiscroll.com/vue/eventcalendar/load-events-from-google-calendar.md)

## Description

Event data can be loaded from remote sources, like public google calendars. Through the [**integration plugin**](https://mobiscroll.com/docs/react/eventcalendar/calendar-integrations) you can easily show events that are available in a public calendar. The integration plugin needs to be added to the download package or installed separately from a dedicated NPM package.

You will just need the `CALENDAR_ID` and an `apiKey` from google and you should be ready to roll.

Public calendars are read-only. If you are interested in syncing private google calendars with read/write/delete access, [check out this example](https://demo.mobiscroll.com/react/eventcalendar/sync-events-google-calendar).

This example uses the [**integration plugin**](https://mobiscroll.com/docs/react/eventcalendar/calendar-integrations) to connect to and load events from Google Calendar and it is not available in the trial. Give the live demo a try and see how it can be configured.

## What this demo shows

- A desktop month-view event calendar with event labels loaded from public Google Calendars.
- **Custom header** The current month and year are shown on the left side of the header.
- **View switching** A segmented control in the center lets users switch between `Month`, `Week`, `Day`, and `Agenda` views, with `Month` selected by default.
- **Secondary navigation** Blue previous and next arrow buttons are shown on the right side of the header with a `Today` button between them.
- **Month view** Days with events display event labels inside the month grid cells.
- **Event selection** Hovering over or clicking an event label highlights the selected event.
- **Day cell states** Hovering a day cell highlights the day number with a gray background, while clicking the empty part of the cell selects the day and highlights the day number with a blue background.
- **Swipe navigation** The calendar supports changing months by clicking and dragging the view left or right.
- **Weekly scheduler view** Selecting the `Week` option from the segmented control switches the layout to a weekly scheduler view. This shows the days of the week at the top, an all-day section for all-day events, and a 24-hour time grid for each day of the week for timed events.
- **Daily scheduler view** Selecting the `Day` option from the segmented control switches the layout to a daily scheduler view. This shows the days of the week at the top, an all-day section for all-day events, and a 24-hour time grid for one day for timed events.
- **Scheduler view** The current time is marked with a blue line in the time grid.
- **Scheduler view** The time grid can be scrolled vertically with the mouse wheel while the header stays sticky.
- **Weekly agenda view** Selecting the `Agenda` option from the segmented control switches the layout to a weekly agenda view. This shows the days of the week at the top, and below the events listed in weekly agenda.

## Best for

- **Google Calendar overlays** Showing events from public Google Calendars inside a Mobiscroll month-view calendar.
- **Read-only event publishing** Sharing team, organization, or community calendars where visitors need to browse events but not edit them.

## API used in this demo

- [`theme`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-theme) - option
- [`themeVariant`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-themeVariant) - option
- [`labels`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-labels) - option
- [`onInit`](https://mobiscroll.com/docs/react/eventcalendar/api#event-onInit) - event
- [`exclusiveEndDates`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-exclusiveEndDates) - option
- [`view`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-view) - option
- [`data`](https://mobiscroll.com/docs/react/eventcalendar/api#opt-data) - option
- [`onPageLoading`](https://mobiscroll.com/docs/react/eventcalendar/api#event-onPageLoading) - event
- [`renderHeader`](https://mobiscroll.com/docs/react/eventcalendar/api#renderer-renderHeader) - renderer
- [`onClose`](https://mobiscroll.com/docs/react/notifications/toast#event-onClose) - event

## Code

### JSX

```jsx
import { googleCalendarSync } from '@mobiscroll/calendar-integration';
import {
  CalendarNav,
  CalendarNext,
  CalendarPrev,
  CalendarToday,
  Eventcalendar,
  Segmented,
  SegmentedGroup,
  setOptions,
  Toast,
} from '@mobiscroll/react';
import { useCallback, useEffect, useRef, useState } from 'react';

setOptions({
  theme: 'ios',
  themeVariant: 'light'
});

const CALENDAR_ID = 'theacidmedia.net_8l6v679q5j2f7q8lpmcjr4mm3k@group.calendar.google.com';

function App() {
  const [events, setEvents] = useState([]);
  const [isLoading, setLoading] = useState(false);
  const [isToastOpen, setToastOpen] = useState(false);
  const [toastMessage, setToastMessage] = useState('');
  const [view, setView] = useState('month');
  const [calView, setCalView] = useState({ calendar: { labels: true } });

  const firstDay = useRef();
  const lastDay = useRef();

  const onError = useCallback((resp) => {
    setToastMessage(resp.error ? resp.error : resp.result.error.message);
    setToastOpen(true);
  }, []);

  const loadEvents = useCallback(() => {
    setLoading(true);
    googleCalendarSync
      .getEvents(CALENDAR_ID, firstDay.current, lastDay.current)
      .then((resp) => {
        setLoading(false);
        setEvents(resp);
      })
      .catch(onError);
  }, [firstDay, lastDay, onError]);

  const changeView = useCallback((event) => {
    let calView;

    switch (event.target.value) {
      case 'month':
      default:
        calView = {
          calendar: { labels: true },
        };
        break;
      case 'week':
        calView = {
          scheduler: { type: 'week' },
        };
        break;
      case 'day':
        calView = {
          scheduler: { type: 'day' },
        };
        break;
      case 'agenda':
        calView = {
          calendar: { type: 'week' },
          agenda: { type: 'week' },
        };
        break;
    }

    setView(event.target.value);
    setCalView(calView);
  }, []);

  const customWithNavButtons = useCallback(() => {
    <>
      <CalendarNav className="google-cal-header-nav" />
      <div className="md-spinner">
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
      </div>
      <div className="google-cal-header-picker">
        <SegmentedGroup value={view} onChange={changeView}>
          <Segmented value="month">Month</Segmented>
          <Segmented value="week">Week</Segmented>
          <Segmented value="day">Day</Segmented>
          <Segmented value="agenda">Agenda</Segmented>
        </SegmentedGroup>
      </div>
      <CalendarPrev className="google-cal-header-prev" />
      <CalendarToday className="google-cal-header-today" />
      <CalendarNext className="google-cal-header-next" />
    </>;
  }, [changeView, view]);

  const handlePageLoading = useCallback(
    (event) => {
      const start = event.viewStart;
      const end = event.viewEnd;

      // Calculate dates
      // (pre-load events for previous and next pages as well)
      if (view === 'month') {
        firstDay.current = start;
        lastDay.current = end;
      } else {
        firstDay.current = new Date(start.getFullYear(), start.getMonth(), start.getDate() - 7);
        lastDay.current = new Date(end.getFullYear(), end.getMonth(), end.getDate() + 7);
      }

      loadEvents();
    },
    [loadEvents, view],
  );

  const handleToastClose = useCallback(() => {
    setToastOpen(false);
  }, []);

  useEffect(() => {
    googleCalendarSync.init({
      apiKey: '<YOUR_GOOGLE_API_KEY>',
      onInit: loadEvents,
    });
  }, [loadEvents]);

  return (
    <>
      <Eventcalendar
        className={'md-google-calendar ' + (isLoading ? 'md-loading-events' : '')}
        exclusiveEndDates={true}
        view={calView}
        data={events}
        onPageLoading={handlePageLoading}
        renderHeader={customWithNavButtons}
      />
      <Toast isOpen={isToastOpen} message={toastMessage} onClose={handleToastClose} />
    </>
  );
}

export default App;
```

### TSX

```tsx
import { googleCalendarSync } from '@mobiscroll/calendar-integration';
import {
  CalendarNav,
  CalendarNext,
  CalendarPrev,
  CalendarToday,
  Eventcalendar,
  MbscCalendarEvent,
  MbscEventcalendarView,
  MbscPageLoadingEvent,
  Segmented,
  SegmentedGroup,
  setOptions,
  Toast,
} from '@mobiscroll/react';
import { ChangeEvent, FC, useCallback, useEffect, useRef, useState } from 'react';

setOptions({
  theme: 'ios',
  themeVariant: 'light'
});

const CALENDAR_ID = 'theacidmedia.net_8l6v679q5j2f7q8lpmcjr4mm3k@group.calendar.google.com';

const App: FC = () => {
  const [events, setEvents] = useState<MbscCalendarEvent[]>([]);
  const [isLoading, setLoading] = useState<boolean>(false);
  const [isToastOpen, setToastOpen] = useState(false);
  const [toastMessage, setToastMessage] = useState('');
  const [view, setView] = useState<string>('month');
  const [calView, setCalView] = useState<MbscEventcalendarView>({
    calendar: { labels: true },
  });

  const firstDay = useRef<Date>(null);
  const lastDay = useRef<Date>(null);

  const onError = useCallback((resp: { error?: string; result: { error: { message: string } } }) => {
    setToastMessage(resp.error ? resp.error : resp.result.error.message);
    setToastOpen(true);
  }, []);

  const loadEvents = useCallback(() => {
    setLoading(true);
    googleCalendarSync
      .getEvents(CALENDAR_ID, firstDay.current!, lastDay.current!)
      .then((resp) => {
        setLoading(false);
        setEvents(resp);
      })
      .catch(onError);
  }, [firstDay, lastDay, onError]);

  const handlePageLoading = useCallback(
    (event: MbscPageLoadingEvent) => {
      const start = event.viewStart!;
      const end = event.viewEnd!;

      // Calculate dates
      // (pre-load events for previous and next pages as well)
      if (view === 'month') {
        firstDay.current = start;
        lastDay.current = end;
      } else {
        firstDay.current = new Date(start.getFullYear(), start.getMonth(), start.getDate() - 7);
        lastDay.current = new Date(end.getFullYear(), end.getMonth(), end.getDate() + 7);
      }

      loadEvents();
    },
    [loadEvents, view],
  );

  const handleToastClose = useCallback(() => {
    setToastOpen(false);
  }, []);

  const changeView = useCallback((event: ChangeEvent<HTMLInputElement>) => {
    let calView: MbscEventcalendarView;

    switch (event.target.value) {
      case 'month':
      default:
        calView = {
          calendar: { labels: true },
        };
        break;
      case 'week':
        calView = {
          scheduler: { type: 'week' },
        };
        break;
      case 'day':
        calView = {
          scheduler: { type: 'day' },
        };
        break;
      case 'agenda':
        calView = {
          calendar: { type: 'week' },
          agenda: { type: 'week' },
        };
        break;
    }

    setView(event.target.value);
    setCalView(calView);
  }, []);

  const customWithNavButtons = useCallback(() => {
    <>
      <CalendarNav className="google-cal-header-nav" />
      <div className="md-spinner">
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
        <div className="md-spinner-blade"></div>
      </div>
      <div className="google-cal-header-picker">
        <SegmentedGroup value={view} onChange={changeView}>
          <Segmented value="month">Month</Segmented>
          <Segmented value="week">Week</Segmented>
          <Segmented value="day">Day</Segmented>
          <Segmented value="agenda">Agenda</Segmented>
        </SegmentedGroup>
      </div>
      <CalendarPrev className="google-cal-header-prev" />
      <CalendarToday className="google-cal-header-today" />
      <CalendarNext className="google-cal-header-next" />
    </>;
  }, [changeView, view]);

  useEffect(() => {
    googleCalendarSync.init({
      apiKey: '<YOUR_GOOGLE_API_KEY>',
      onInit: loadEvents,
    });
  }, [loadEvents]);

  return (
    <>
      <Eventcalendar
        className={'md-google-calendar ' + (isLoading ? 'md-loading-events' : '')}
        exclusiveEndDates={true}
        view={calView}
        data={events}
        onPageLoading={handlePageLoading}
        renderHeader={customWithNavButtons}
      />
      <Toast isOpen={isToastOpen} message={toastMessage} onClose={handleToastClose} />
    </>
  );
};
export default App;
```

### CSS

```css
.md-google-calendar .mbsc-segmented {
  max-width: 300px;
  margin: 0 auto;
}

.google-cal-header-picker {
  flex: 1 0 auto;
}

/* material header order */

.mbsc-material.google-cal-header-prev {
  order: 1;
}

.mbsc-material.google-cal-header-next {
  order: 2;
}

.mbsc-material.google-cal-header-nav {
  order: 3;
}

.mbsc-material .google-cal-header-picker {
  order: 4;
}

.mbsc-material .google-cal-header-today {
  order: 5;
}

/* windows header order */

.mbsc-windows.google-cal-header-nav {
  order: 1;
}

.mbsc-windows.google-cal-header-prev {
  order: 2;
}

.mbsc-windows.google-cal-header-next {
  order: 3;
}

.mbsc-windows .google-cal-header-picker {
  order: 4;
}

.mbsc-windows .google-cal-header-today {
  order: 5;
}

/* loading spinner and overlay */

.md-loading-events .md-sync-events-overlay {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.md-spinner {
  visibility: hidden;
  position: relative;
  width: 20px;
  height: 20px;
}

.md-loading-events .md-spinner {
  visibility: visible;
}

.md-spinner .md-spinner-blade {
  position: absolute;
  left: 44.5%;
  top: 37%;
  width: 10%;
  height: 25%;
  border-radius: 50%/20%;
  background-color: #8c8c8c;
  -webkit-animation: md-spinner-fade 1s linear infinite;
  animation: md-spinner-fade 1s linear infinite;
  -webkit-animation-play-state: paused;
  animation-play-state: paused;
}

.md-spinner .md-spinner-blade:nth-child(1) {
  -webkit-animation-delay: -1.66667s;
  animation-delay: -1.66667s;
  -webkit-transform: rotate(30deg) translate(0, -150%);
  transform: rotate(30deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(2) {
  -webkit-animation-delay: -1.58333s;
  animation-delay: -1.58333s;
  -webkit-transform: rotate(60deg) translate(0, -150%);
  transform: rotate(60deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(3) {
  -webkit-animation-delay: -1.5s;
  animation-delay: -1.5s;
  -webkit-transform: rotate(90deg) translate(0, -150%);
  transform: rotate(90deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(4) {
  -webkit-animation-delay: -1.41667s;
  animation-delay: -1.41667s;
  -webkit-transform: rotate(120deg) translate(0, -150%);
  transform: rotate(120deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(5) {
  -webkit-animation-delay: -1.33333s;
  animation-delay: -1.33333s;
  -webkit-transform: rotate(150deg) translate(0, -150%);
  transform: rotate(150deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(6) {
  -webkit-animation-delay: -1.25s;
  animation-delay: -1.25s;
  -webkit-transform: rotate(180deg) translate(0, -150%);
  transform: rotate(180deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(7) {
  -webkit-animation-delay: -1.16667s;
  animation-delay: -1.16667s;
  -webkit-transform: rotate(210deg) translate(0, -150%);
  transform: rotate(210deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(8) {
  -webkit-animation-delay: -1.08333s;
  animation-delay: -1.08333s;
  -webkit-transform: rotate(240deg) translate(0, -150%);
  transform: rotate(240deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(9) {
  -webkit-animation-delay: -1s;
  animation-delay: -1s;
  -webkit-transform: rotate(270deg) translate(0, -150%);
  transform: rotate(270deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(10) {
  -webkit-animation-delay: -0.91667s;
  animation-delay: -0.91667s;
  -webkit-transform: rotate(300deg) translate(0, -150%);
  transform: rotate(300deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(11) {
  -webkit-animation-delay: -0.83333s;
  animation-delay: -0.83333s;
  -webkit-transform: rotate(330deg) translate(0, -150%);
  transform: rotate(330deg) translate(0, -150%);
}

.md-spinner .md-spinner-blade:nth-child(12) {
  -webkit-animation-delay: -0.75s;
  animation-delay: -0.75s;
  -webkit-transform: rotate(360deg) translate(0, -150%);
  transform: rotate(360deg) translate(0, -150%);
}

.md-loading-events .md-spinner-blade {
  -webkit-animation-play-state: running;
  animation-play-state: running;
}

@-webkit-keyframes md-spinner-fade {
  0% {
    opacity: 0.85;
  }
  50% {
    opacity: 0.25;
  }
  100% {
    opacity: 0.25;
  }
}

@keyframes md-spinner-fade {
  0% {
    opacity: 0.85;
  }
  50% {
    opacity: 0.25;
  }
  100% {
    opacity: 0.25;
  }
}
```

## Implementation notes

- Import `googleCalendarSync` from `@mobiscroll/calendar-integration` (a separately installed package). Define a single `CALENDAR_ID` constant - one public Google Calendar. No user sign-in required; access is via API key only. Set `exclusiveEndDates: true`. The calendar is read-only (no `clickToCreate`/`dragToCreate`).
- Default view: `calendar: { labels: true }`. A `SegmentedGroup` view switcher in the header lets the user pick between four views:
  - `'month'` → `{ calendar: { labels: true } }`
  - `'week'` → `{ scheduler: { type: 'week' } }`
  - `'day'` → `{ scheduler: { type: 'day' } }`
  - `'agenda'` → `{ calendar: { type: 'week' }, agenda: { type: 'week' } }`
- Call `googleCalendarSync.init({ apiKey, onInit: loadEvents })` on mount. `onInit` fires when the integration is ready.
- **`loadEvents`**: calls `googleCalendarSync.getEvents(CALENDAR_ID, firstDay.current, lastDay.current)` and replaces the events array on success.
- **`onPageLoading`**: sets date refs and calls `loadEvents()`. For `'month'` view use `args.viewStart`/`args.viewEnd` directly. For all other views, pre-load ±7 days: `firstDay = start − 7 days`, `lastDay = end + 7 days`.
- **Custom header** (`renderHeader`, Angular: `headerTemplate`, Vue: `#header` slot): `CalendarNav` (left), spinner (visible while loading), `SegmentedGroup` (Month/Week/Day/Agenda), then `CalendarPrev`, `CalendarToday`, `CalendarNext` (right).

## Run it in your project

Running a demo locally requires a Mobiscroll trial or a license; setup is per framework at https://mobiscroll.com/docs/react/getting-started/installation

## Related demos

- Previous: [Outlook Integration](https://demo.mobiscroll.com/react/eventcalendar/sync-events-outlook-calendar.md) - Connect the React event calendar to Outlook via plugin — sign in users, load calendars, and add, edit, or delete events with optional write-back.