add ability to set timezone on events in iOS. necessary for recurrenc…

README.md

@@ -307,6 +307,7 @@ Returns: **Promise**
 | [**attendees**](#attendees)\*               | Array  | The attendees of the event, including the organizer.                                                  |  ✓  |    ✓    |
 | [**calendar**](#calendar)\*                 | Object | The calendar containing the event.                                                                    |  ✓  |    ✓    |
 | **skipAndroidTimezone**                     | Bool   | Skip the process of setting automatic timezone on android                                             |     |    ✓    |
+| **timeZone**                                | String | The time zone associated with the event                                                 |  ✓  |         |
 
 ### Calendar
 
@@ -388,7 +389,7 @@ If you encounter something that is not listed here, try [searching in GitHub iss
 This might be related to a sync issue.
 You need to be sure that the event you saved is matching what your device will keep in sync.
 
-For iOS, you might have not all event synced. You might need to update this iOS settings in _Settings_ > _Calendar_ > _Sync_ > **All Events**. If that's not enough, it might be worth checking [iOS iCloud sync documentation](https://support.apple.com/en-us/HT203521).  
+For iOS, you might have not all event synced. You might need to update this iOS settings in _Settings_ > _Calendar_ > _Sync_ > **All Events**. If that's not enough, it might be worth checking [iOS iCloud sync documentation](https://support.apple.com/en-us/HT203521).
 For Android, you can have a look to [Google Calendar sync problems documentation](https://support.google.com/calendar/answer/6261951).
 
 ## Wiki

ios/RNCalendarEvents.m

@@ -23,6 +23,8 @@ @interface RNCalendarEvents ()
 static NSString *const _isDetached = @"isDetached";
 static NSString *const _availability = @"availability";
 static NSString *const _attendees    = @"attendees";
+static NSString *const _timeZone    = @"timeZone";
+
 dispatch_queue_t serialQueue;
 
 @implementation RNCalendarEvents
@@ -115,6 +117,7 @@ - (NSDictionary *)buildAndSaveEvent:(NSDictionary *)details options:(NSDictionar
     NSString *recurrence = [RCTConvert NSString:details[_recurrence]];
     NSDictionary *recurrenceRule = [RCTConvert NSDictionary:details[_recurrenceRule]];
     NSString *availability = [RCTConvert NSString:details[_availability]];
+    NSString *timeZone = [RCTConvert NSString:details[_timeZone]];
 
     if (eventId) {
         calendarEvent = (EKEvent *)[self.eventStore calendarItemWithIdentifier:eventId];
@@ -133,6 +136,10 @@ - (NSDictionary *)buildAndSaveEvent:(NSDictionary *)details options:(NSDictionar
         }
     }
 
+    if (timeZone) {
+      calendarEvent.timeZone = [NSTimeZone timeZoneWithName:timeZone];
+    }
+
     if (title) {
         calendarEvent.title = title;
     }
@@ -501,6 +508,7 @@ - (NSDictionary *)serializeCalendarEvent:(EKEvent *)event
                                                  @"endDate": @""
                                                  },
                                          _availability: @"",
+                                         _timeZone: @""
                                          };
 
     NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
@@ -543,7 +551,11 @@ - (NSDictionary *)serializeCalendarEvent:(EKEvent *)event
     if (event.location) {
         [formedCalendarEvent setValue:event.location forKey:_location];
     }
-
+
+    if (event.timeZone) {
+        [formedCalendarEvent setValue:event.timeZone forKey:_timeZone];
+    }
+
     @try {
         if (event.attendees) {
             NSMutableArray *attendees = [[NSMutableArray alloc] init];

src/index.d.ts

@@ -95,6 +95,8 @@ interface CalendarEventBase {
   notes?: string;
   /** ANDROID ONLY - The description associated with the calendar event. */
   description?: string;
+  /** iOS ONLY - The time zone associated with the event
+  timeZone?: string;
 }
 
 export interface CalendarEventReadable extends CalendarEventBase {