(Objective-C) List Google Calendars

See more Google Calendar Examples

Demonstrates how to list the Google Calendars for an account.

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#import <CkoJsonObject.h>
#import <CkoHttp.h>
#import <NSString.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses a previously obtained access token having permission for the 
// Google Calendar scope.

// In this example, Get Google Calendar OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/googleCalendar.json"];
if ([jsonToken HasMember: @"access_token"] == NO) {
    NSLog(@"%@",@"No access token found.");
    return;
}

CkoHttp *http = [[CkoHttp alloc] init];
http.AuthToken = [jsonToken StringOf: @"access_token"];

NSString *jsonResponse = [http QuickGetStr: @"https://www.googleapis.com/calendar/v3/users/me/calendarList"];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@",jsonResponse);
NSLog(@"%@",@"-----------------------------");

// This is a sample JSON response:
// (Sample code to iterate over the JSON response is shown below.)

// {
//  "kind": "calendar#calendarList",
//  "etag": "\"p32cfpufit76da0g\"",
//  "nextSyncToken": "CJj8-fLpzNUCEhhzdXBwb3J0QGNoaWxrYXRjbG91ZC5jb20=",
//  "items": [
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1465249947472000\"",
//    "id": "support@chilkatcloud.com",
//    "summary": "support@chilkatcloud.com",
//    "timeZone": "America/Chicago",
//    "colorId": "14",
//    "backgroundColor": "#9fe1e7",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "owner",
//    "defaultReminders": [
//     {
//      "method": "popup",
//      "minutes": 10
//     }
//    ],
//    "notificationSettings": {
//     "notifications": [
//      {
//       "type": "eventCreation",
//       "method": "email"
//      },
//      {
//       "type": "eventChange",
//       "method": "email"
//      },
//      {
//       "type": "eventCancellation",
//       "method": "email"
//      },
//      {
//       "type": "eventResponse",
//       "method": "email"
//      }
//     ]
//    },
//    "primary": true
//   },
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1502373382732000\"",
//    "id": "#contacts@group.v.calendar.google.com",
//    "summary": "Contacts",
//    "timeZone": "America/Chicago",
//    "colorId": "13",
//    "backgroundColor": "#92e1c0",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "reader",
//    "defaultReminders": []
//   },
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1502373376447000\"",
//    "id": "en.usa#holiday@group.v.calendar.google.com",
//    "summary": "Holidays in United States",
//    "timeZone": "America/Chicago",
//    "colorId": "8",
//    "backgroundColor": "#16a765",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "reader",
//    "defaultReminders": []
//   }
//  ]
// }
// 

// Iterate over the JSON response..
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json Load: jsonResponse];

int numCalendars = [[json SizeOfArray: @"items"] intValue];
int i = 0;
while (i < numCalendars) {
    NSLog(@"%@%d%@",@"--- ",i,@" ---");
    json.I = [NSNumber numberWithInt: i];
    NSLog(@"%@%@",@"kind: ",[json StringOf: @"items[i].kind"]);
    NSLog(@"%@%@",@"id: ",[json StringOf: @"items[i].id"]);

    // Examine the notification settings, if any..
    int numSettings = [[json SizeOfArray: @"items[i].notificationSettings.notifications"] intValue];
    if (numSettings > 0) {
        int j = 0;
        while (j < numSettings) {
            json.J = [NSNumber numberWithInt: j];
            NSLog(@"%@%@",@"Notification Type: ",[json StringOf: @"items[i].notificationSettings.notifications[j].type"]);
            NSLog(@"%@%@",@"Notification Method: ",[json StringOf: @"items[i].notificationSettings.notifications[j].method"]);
            j = j + 1;
        }

    }

    i = i + 1;
}