Objective-C Google Calendar: List Events on a Calendar

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Returns events on the specified calendar.
This example returns the events for the calendar having the ID = "support@chilkatcloud.com"

Documentation: https://developers.google.com/google-apps/calendar/v3/reference/events/list


#import <CkoRest.h>
#import <CkoOAuth2.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>
#import <NSString.h>

CkoRest *rest = [[CkoRest alloc] init];
BOOL success;

//   Provide a previously obtained OAuth2 access token.
CkoOAuth2 *oauth2 = [[CkoOAuth2 alloc] init];
oauth2.AccessToken = @"OAUTH2_ACCESS_TOKEN";
[rest SetAuthOAuth2: oauth2];

success = [rest Connect: @"www.googleapis.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

CkoStringBuilder *sbJson = [[CkoStringBuilder alloc] init];
success = [rest FullRequestNoBodySb: @"GET" uriPath: @"/calendar/v3/calendars/support@chilkatcloud.com/events" sb: sbJson];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@%d",@"Received error response code: ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@",@"Response body:");
    NSLog(@"%@",[sbJson GetAsString]);
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json LoadSb: sbJson];

//  The following code parses the JSON response.
//  A sample JSON response is shown below the sample code.
NSString *kind = 0;
NSString *etag = 0;
NSString *summary = 0;
NSString *updated = 0;
NSString *timeZone = 0;
NSString *accessRole = 0;
NSString *nextSyncToken = 0;
int i;
int count_i;
NSString *method = 0;
int minutes;
NSString *id = 0;
NSString *status = 0;
NSString *htmlLink = 0;
NSString *created = 0;
NSString *creatorEmail = 0;
BOOL creatorSelf;
NSString *organizerEmail = 0;
BOOL organizerSelf;
NSString *startDateTime = 0;
NSString *endDateTime = 0;
NSString *iCalUID = 0;
int sequence;
NSString *hangoutLink = 0;
BOOL remindersUseDefault;
NSString *location = 0;

kind = [json StringOf: @"kind"];
etag = [json StringOf: @"etag"];
summary = [json StringOf: @"summary"];
updated = [json StringOf: @"updated"];
timeZone = [json StringOf: @"timeZone"];
accessRole = [json StringOf: @"accessRole"];
nextSyncToken = [json StringOf: @"nextSyncToken"];
i = 0;
count_i = [[json SizeOfArray: @"defaultReminders"] intValue];
while (i < count_i) {
    json.I = [NSNumber numberWithInt: i];
    method = [json StringOf: @"defaultReminders[i].method"];
    minutes = [[json IntOf: @"defaultReminders[i].minutes"] intValue];
    i = i + 1;
}

i = 0;
count_i = [[json SizeOfArray: @"items"] intValue];
while (i < count_i) {
    json.I = [NSNumber numberWithInt: i];
    kind = [json StringOf: @"items[i].kind"];
    etag = [json StringOf: @"items[i].etag"];
    id = [json StringOf: @"items[i].id"];
    status = [json StringOf: @"items[i].status"];
    htmlLink = [json StringOf: @"items[i].htmlLink"];
    created = [json StringOf: @"items[i].created"];
    updated = [json StringOf: @"items[i].updated"];
    summary = [json StringOf: @"items[i].summary"];
    creatorEmail = [json StringOf: @"items[i].creator.email"];
    creatorSelf = [json BoolOf: @"items[i].creator.self"];
    organizerEmail = [json StringOf: @"items[i].organizer.email"];
    organizerSelf = [json BoolOf: @"items[i].organizer.self"];
    startDateTime = [json StringOf: @"items[i].start.dateTime"];
    endDateTime = [json StringOf: @"items[i].end.dateTime"];
    iCalUID = [json StringOf: @"items[i].iCalUID"];
    sequence = [[json IntOf: @"items[i].sequence"] intValue];
    hangoutLink = [json StringOf: @"items[i].hangoutLink"];
    remindersUseDefault = [json BoolOf: @"items[i].reminders.useDefault"];
    location = [json StringOf: @"items[i].location"];
    i = i + 1;
}

NSLog(@"%@",@"Example Completed.");

Sample JSON Response Body

{
  "kind": "calendar#events",
  "etag": "\"p32gd13choqmte0g\"",
  "summary": "support@chilkatcloud.com",
  "updated": "2017-11-07T22:49:27.892Z",
  "timeZone": "America/Chicago",
  "accessRole": "owner",
  "defaultReminders": [
    {
      "method": "popup",
      "minutes": 10
    }
  ],
  "nextSyncToken": "CKDQjZHGrdcCEKDQjZHGrdcCGAU=",
  "items": [
    {
      "kind": "calendar#event",
      "etag": "\"3004746854620000\"",
      "id": "5jt9fopfg3rr9eftegiuq7gc5k",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=NWp0OWZvcGZnM3JyOWVmdGVnaXVxN2djNWsgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-10T13:57:07.000Z",
      "updated": "2017-08-10T13:57:07.310Z",
      "summary": "Run 10 miles",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-10T12:00:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-10T13:00:00-05:00"
      },
      "iCalUID": "5jt9fopfg3rr9eftegiuq7gc5k@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.5jt9fopfg3rr9eftegiuq7gc5k",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004746898118000\"",
      "id": "7dvh49vd219r3sq7jdueieu8rc",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=N2R2aDQ5dmQyMTlyM3NxN2pkdWVpZXU4cmMgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-10T13:57:29.000Z",
      "updated": "2017-08-10T13:57:29.059Z",
      "summary": "Eat Giordano's Pizza",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-10T15:00:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-10T16:00:00-05:00"
      },
      "iCalUID": "7dvh49vd219r3sq7jdueieu8rc@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.7dvh49vd219r3sq7jdueieu8rc",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004746915224000\"",
      "id": "5btd89ljn07bg3tlgpimcaqrro",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=NWJ0ZDg5bGpuMDdiZzN0bGdwaW1jYXFycm8gc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-10T13:57:37.000Z",
      "updated": "2017-08-10T13:57:37.612Z",
      "summary": "Nap",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-10T16:30:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-10T17:30:00-05:00"
      },
      "iCalUID": "5btd89ljn07bg3tlgpimcaqrro@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.5btd89ljn07bg3tlgpimcaqrro",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004915127736000\"",
      "id": "703fss5qdedn1egq80ildhslba",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=NzAzZnNzNXFkZWRuMWVncTgwaWxkaHNsYmEgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-11T13:19:23.000Z",
      "updated": "2017-08-11T13:19:23.868Z",
      "summary": "Run 12 miles",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-12T09:30:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-12T10:30:00-05:00"
      },
      "iCalUID": "703fss5qdedn1egq80ildhslba@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.703fss5qdedn1egq80ildhslba",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004915160212000\"",
      "id": "02pv1cpdp7vm11htnfi3ii7iie",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=MDJwdjFjcGRwN3ZtMTFodG5maTNpaTdpaWUgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-11T13:19:40.000Z",
      "updated": "2017-08-11T13:19:40.106Z",
      "summary": "Eat Lou Malnati's Pizza",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-12T12:00:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-12T13:00:00-05:00"
      },
      "iCalUID": "02pv1cpdp7vm11htnfi3ii7iie@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.02pv1cpdp7vm11htnfi3ii7iie",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004915175982000\"",
      "id": "20l29s2idr5ggorncd3teahm0e",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=MjBsMjlzMmlkcjVnZ29ybmNkM3RlYWhtMGUgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-11T13:19:47.000Z",
      "updated": "2017-08-11T13:19:47.991Z",
      "summary": "Nap",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-12T16:30:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-12T17:30:00-05:00"
      },
      "iCalUID": "20l29s2idr5ggorncd3teahm0e@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.20l29s2idr5ggorncd3teahm0e",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3004969011208000\"",
      "id": "v7kvmsvsoms3hjl5uq423jqhb0",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=djdrdm1zdnNvbXMzaGpsNXVxNDIzanFoYjAgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-08-11T20:48:25.000Z",
      "updated": "2017-08-11T20:48:25.604Z",
      "summary": "Eat Lou Malnati's Pizza",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-08-12T12:00:00-05:00"
      },
      "end": {
        "dateTime": "2017-08-12T13:00:00-05:00"
      },
      "iCalUID": "v7kvmsvsoms3hjl5uq423jqhb0@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.v7kvmsvsoms3hjl5uq423jqhb0",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007268672000\"",
      "id": "1p7fb5vob7vm57fepk4p1teft9",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=MXA3ZmI1dm9iN3ZtNTdmZXBrNHAxdGVmdDkgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:27:14.000Z",
      "updated": "2017-11-06T21:27:14.336Z",
      "summary": "Breakfast at Tiffany's",
      "location": "Tiffany's",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-06T07:00:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-06T08:00:00-06:00"
      },
      "iCalUID": "1p7fb5vob7vm57fepk4p1teft9@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.1p7fb5vob7vm57fepk4p1teft9",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007309018000\"",
      "id": "05f5eieun35hoofbiab00ru03o",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=MDVmNWVpZXVuMzVob29mYmlhYjAwcnUwM28gc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:27:34.000Z",
      "updated": "2017-11-06T21:27:34.509Z",
      "summary": "Lunch at Sushi House",
      "location": "Sushi House",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-06T12:30:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-06T13:30:00-06:00"
      },
      "iCalUID": "05f5eieun35hoofbiab00ru03o@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.05f5eieun35hoofbiab00ru03o",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007516220000\"",
      "id": "4hrv7chnc3jspepqr4ntrsq6k9",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=NGhydjdjaG5jM2pzcGVwcXI0bnRyc3E2azkgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:29:17.000Z",
      "updated": "2017-11-06T21:29:18.110Z",
      "summary": "Dinner at Gia Mia",
      "location": "Gia Mia",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-06T19:00:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-06T20:00:00-06:00"
      },
      "iCalUID": "4hrv7chnc3jspepqr4ntrsq6k9@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.4hrv7chnc3jspepqr4ntrsq6k9",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007580384000\"",
      "id": "53k665tdurv5geejkl8d9eljmp",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=NTNrNjY1dGR1cnY1Z2VlamtsOGQ5ZWxqbXAgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:29:50.000Z",
      "updated": "2017-11-06T21:29:50.192Z",
      "summary": "Breakfast at McDonald's",
      "location": "McDonald's",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-09T07:00:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-09T08:00:00-06:00"
      },
      "iCalUID": "53k665tdurv5geejkl8d9eljmp@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.53k665tdurv5geejkl8d9eljmp",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007628078000\"",
      "id": "27n9mbbabkur965n87ddir6m1i",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=MjduOW1iYmFia3VyOTY1bjg3ZGRpcjZtMWkgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:30:14.000Z",
      "updated": "2017-11-06T21:30:14.039Z",
      "summary": "Lunch at McDonald's",
      "location": "McDonald's",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-09T13:00:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-09T14:00:00-06:00"
      },
      "iCalUID": "27n9mbbabkur965n87ddir6m1i@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.27n9mbbabkur965n87ddir6m1i",
      "reminders": {
        "useDefault": true
      }
    },
    {
      "kind": "calendar#event",
      "etag": "\"3020007645098000\"",
      "id": "3jmu86tk17hc21gam5l073pu1k",
      "status": "confirmed",
      "htmlLink": "https://www.google.com/calendar/event?eid=M2ptdTg2dGsxN2hjMjFnYW01bDA3M3B1MWsgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
      "created": "2017-11-06T21:30:22.000Z",
      "updated": "2017-11-06T21:30:22.549Z",
      "summary": "Dinner at McDonald's",
      "location": "McDonald's",
      "creator": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "organizer": {
        "email": "support@chilkatcloud.com",
        "self": true
      },
      "start": {
        "dateTime": "2017-11-09T19:00:00-06:00"
      },
      "end": {
        "dateTime": "2017-11-09T20:00:00-06:00"
      },
      "iCalUID": "3jmu86tk17hc21gam5l073pu1k@google.com",
      "sequence": 0,
      "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.3jmu86tk17hc21gam5l073pu1k",
      "reminders": {
        "useDefault": true
      }
    }
  ]
}