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Editorial Team
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Asked: 2026-06-04T02:38:34+00:00

NSDateFormatter *timeFormatter = [[[NSDateFormatter alloc] init] autorelease]; [timeFormatter setDateFormat:@h:mm a]; NSString *fullTime = [timeFormatter

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    NSDateFormatter *timeFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [timeFormatter setDateFormat:@"h:mm a"];
    NSString *fullTime = [timeFormatter stringFromDate:someDateHere];
    NSArray *timeParts = [fullTime componentsSeparatedByString:@" "];
    timeLabel.text = [timeParts objectAtIndex:0];
    ampmLabel.text = [timeParts objectAtIndex:1];

The LAST line crashes with

    NSRangeException*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]

How is this possible? There is a nil check on the date that returns just before this code.

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1 Answer

  1. Editorial Team

    From the Data Formatting Guide documentation (section Date Formatters > Use Format Strings to Specify Custom Formats > Fixed Formats):

    Although in principle a format string specifies a fixed format, by default NSDateFormater still takes the user’s preferences (including the locale setting) into account.
    …
    In iOS, the user can override the default AM/PM versus 24-hour time setting. This may cause NSDateFormatter to rewrite the format string you set.

    In other words, on an iOS device that’s set for 24-hour time setting, you won’t get “6:02 PM”, you’ll get “18:02”, even though you specified “h:mm a”. So when you separate that by spaces, you get back a single value, “18:02”, not two values.

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