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How to connect to icloud calendar?
almost 10 years ago
Hello coder's world,
To connect to icloud calendar is not easy task at all. The reason behind this is, iclound does not provide any APIs to connect with it (Click on the link to read more http://blog.sunrise.am/post/74146344289/about-icloud) for security reason. I have done my research on this calendar feature and found some solution, click see below links for solution.
- http://www.tmssoftware.com/site/tmscloudnet.asp
- http://www.webdavsystem.com/server/server_examples/caldav_carddav_csharp
- http://computing.physics.harvard.edu/icloud
- http://sabre.io/dav/building-a-caldav-client (for php developers)
- http://www.cronofy.com
The easiest solution I found is with http://www.cronofy.com.
#Using Cronofy APIs
1) We can connect to user's icloud calendar. For this we need to create an Enterprise account with Cronofy. For this click on the link (http://www.cronofy.com/pricing).
2) Once the account is created, Cronofy will provide a client id and client secret key to use their APIs (http://www.cronofy.com/developers/api).
3) Using these ids and callback url we can request for authorization code. Using this authorization code we will request for access token to do the operation on user's calendar (http://www.cronofy.com/developers/api#authorization).
We will keep this token with us for future access (we need to refresh it periodically). The authorization process seems like we currently have for Google calendar. But since I did not check it practically, so we need to check this more with Cronofy.4) After following above steps, we can do the following actions with user's calendars a) We can get the list of all calendars. b) We can create/update events for a specific calendar. c) We can delete events. d) We can read events.
5) All the communication will happen in JSON format.
I have explain the flow in the form of diagram too which you can find this in attached icloud_cronofy.png file.
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almost 10 years ago
Another approach I have implemented
Just wanted to brief my understanding on CalDAV:
CalDAV is a calendaring and scheduling client/server protocol designed to allow users to access calendar data on a server, and to schedule meetings with other users on that server or other servers (http://caldav.calconnect.org).
Implementation of CalDAV Client:
User will provide user name (Apple Id), password and URI (https://p25-caldav.icloud.com/).
To connect to icloud Calendar we will create a "PROFIND" request using provided credentials from point 1 and with some CalDAV standard based request xml (https://github.com/muhlba91/icloud/blob/master/PHP/icloud.php).
The first request will return a token(user id). This user id will be the key to communicate with iCloud Calendar. We can store this key on our server for further operations.
Using returned token/user - id we can make request to iCloud Calendar, the URI will be look like this (https://p25-caldav.icloud.com/
/calendars/ ).Once we are able to connect to iCloud Calendar by following steps 1 to 4 mentioned above., then we can do the following actions (http://sabre.io/dav/building-a-caldav-client/) :
a) Retrieve calendar information. b) Download objects. c) Find out if anything has changed. d) Update a calendar object. e) Create a calendar object. f) Deleting a calendar object.
This is the basic idea to integrate iCloud Calendar using CalDAV Client. We also need to take care of all the errors and status returned by the server (401,404,403,409,500 .. etc.). And other cases like if user changed his credentials.
If anyone wants to c# code for this please query to our site.
Happy Coding :)
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