CODEWITHSUNDEEP
objective-cnsdate
Atilla Jax
Atilla Jax

Reputation: 615

Convert a string timezone to NSTimeZone

I have a time zone formatted like this in an incoming string which I have no control over (it comes in a dictionary from server)

tzHours = NSString * @"+01:00"

But I need to convert it into a NSTimeZone so I can format a date

NSString *date = [dateDictionary safeObjectForKey:@"date"];
    NSString *time = [dateDictionary safeObjectForKey:@"time"];
    NSString *tzHours = [dateDictionary safeObjectForKey:@"timeZone"];

// Format the date based off the timezone
NSDateFormatter *formatter = [self _apiDateFormatterWithTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];

But I am unsure how to do this.

Is there a good way to do handle this?

Many thanks

Upvotes: 0

Views: 560

Answers (1)

mbogh
mbogh

Reputation: 1361

So given you have the three NSStrings: date, time and tzHours. You could do something like this:

NSString *date = @"2015-01-01";
NSString *time = @"14:00:01";
NSString *tzHours = @"+01:00";

NSString *dateString = [NSString stringWithFormat:@"%@ %@ %@", date, time, tzHours];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = @"yyyy-MM-dd HH:mm:ss ZZZZZ";
dateFormatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];

NSDate *dateObject = [dateFormatter dateFromString:dateString];

The dateFormat of the NSDateFormatter naturally depends on the format of date and time.

Also remember to cache the NSDateFormatter or else you will suffer performance-wise.

Upvotes: 3

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