Swift Google Calendar: Update (Patch) an Event

Back to Index

Updates an event. (This example modifies the start/end date/time for the event id 52e7uk7j7vl5dosj7b25memov0 in the calendar with id = "support@chilkatcloud.com".)

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

func chilkatTest() {
    let rest = CkoRest()
    var success: Bool

    //   Provide a previously obtained OAuth2 access token.
    let oauth2 = CkoOAuth2()
    oauth2.AccessToken = "OAUTH2_ACCESS_TOKEN"

    success = rest.Connect("www.googleapis.com", port: 443, tls: true, autoReconnect: true)
    if success != true {

    //  The following code creates the JSON request body.
    //  The JSON created by this code is shown below.
    let jsonReq = CkoJsonObject()
    jsonReq.UpdateString("start.dateTime", value: "2017-11-27T10:30:00-06:00")
    jsonReq.UpdateString("end.dateTime", value: "2017-11-27T11:30:00-06:00")

    let sbReq = CkoStringBuilder()

    rest.AddHeader("Content-Type", value: "application/json")

    let sbJson = CkoStringBuilder()
    success = rest.FullRequestSb("PATCH", uriPath: "/calendar/v3/calendars/support@chilkatcloud.com/events/52e7uk7j7vl5dosj7b25memov0", requestBody: sbReq, responseBody: sbJson)
    if success != true {

    if rest.ResponseStatusCode.integerValue != 200 {
        print("Received error response code: \(rest.ResponseStatusCode.integerValue)")
        print("Response body:")

    let json = CkoJsonObject()

    //  The following code parses the JSON response.
    //  A sample JSON response is shown below the sample code.
    var kind: String?
    var etag: String?
    var id: String?
    var status: String?
    var htmlLink: String?
    var created: String?
    var updated: String?
    var summary: String?
    var creatorEmail: String?
    var creatorSelf: Bool
    var organizerEmail: String?
    var organizerSelf: Bool
    var startDateTime: String?
    var endDateTime: String?
    var iCalUID: String?
    var sequence: Int
    var hangoutLink: String?
    var remindersUseDefault: Bool

    kind = json.StringOf("kind")
    etag = json.StringOf("etag")
    id = json.StringOf("id")
    status = json.StringOf("status")
    htmlLink = json.StringOf("htmlLink")
    created = json.StringOf("created")
    updated = json.StringOf("updated")
    summary = json.StringOf("summary")
    creatorEmail = json.StringOf("creator.email")
    creatorSelf = json.BoolOf("creator.self")
    organizerEmail = json.StringOf("organizer.email")
    organizerSelf = json.BoolOf("organizer.self")
    startDateTime = json.StringOf("start.dateTime")
    endDateTime = json.StringOf("end.dateTime")
    iCalUID = json.StringOf("iCalUID")
    sequence = json.IntOf("sequence").integerValue
    hangoutLink = json.StringOf("hangoutLink")
    remindersUseDefault = json.BoolOf("reminders.useDefault")

    print("Example Completed.")


Sample JSON Request Body

  "start": {
    "dateTime": "2017-11-27T10:30:00-06:00"
  "end": {
    "dateTime": "2017-11-27T11:30:00-06:00"

Sample JSON Response Body

  "kind": "calendar#event",
  "etag": "\"3020353646374000\"",
  "id": "52e7uk7j7vl5dosj7b25memov0",
  "status": "confirmed",
  "htmlLink": "https://www.google.com/calendar/event?eid=NTJlN3VrN2o3dmw1ZG9zajdiMjVtZW1vdjAgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
  "created": "2017-11-08T21:27:50.000Z",
  "updated": "2017-11-08T21:33:43.187Z",
  "summary": "Dentist Appointment",
  "creator": {
    "email": "support@chilkatcloud.com",
    "self": true
  "organizer": {
    "email": "support@chilkatcloud.com",
    "self": true
  "start": {
    "dateTime": "2017-11-27T10:30:00-06:00"
  "end": {
    "dateTime": "2017-11-27T11:30:00-06:00"
  "iCalUID": "52e7uk7j7vl5dosj7b25memov0@google.com",
  "sequence": 1,
  "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.52e7uk7j7vl5dosj7b25memov0",
  "reminders": {
    "useDefault": true