CODEWITHSUNDEEP
iosobjective-cnstimezone
kaushal
kaushal

Reputation: 1573

Daylight saving time with NSTimeZone best practice

I have created a weekly view(similar to calendar) with header day of week. I am creating the current time using below code :

+(NSDate *) getCurrentDate {

    NSDate* datetime = [NSDate date];
    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
    NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"America/Juneau"];// this is dynamic and coming from server.
    [dateFormatter setTimeZone:timeZone]; // Prevent adjustment to user's local time zone.
    [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"];
    NSString* dateTimeInIsoFormatForUserTimeZone = [dateFormatter stringFromDate:datetime];  
    return [dateFormatter dateFromString:dateTimeInIsoFormatForUserTimeZone];

}

I am using this date as reference to create week date (from monday to sunday). My code work fine for all case but I was failing at DST time zone.

I have seen similar question on stack-overflow but they are more subjective and not able to solve my problem. Answer with code and best practise is highly appreciated. Thanks In advance!.

Upvotes: 0

Views: 1175

Answers (1)

7vikram7
7vikram7

Reputation: 2824

[[NSTimeZone *yourTimeZone*] secondsFromGMTForDate:*yourDate*]

With this method, you can get secondsFromGMTForDate for a particular timezone which is also adjusted with daylight saving.

You can use this offset to create a date object in your timezone and show the weekview accordingly.

Upvotes: 2

Related Questions