NSDateformatter added in Interface Builder on NSTextfield adds GMT difference

Question

OK, I want to build a countdown timer with a NSTextfield and a NSStepper to increase it. Both have bindings to the same int property in ModelKeyPath in Interface Builder. To format the int value output to 00:00:00, I added a NSDateFormatter in IB to the NSTextfield.

It's working, but when I run the application, the difference to GMT in my case +001 is added. The int value should be 0, but the textField shows 01:00:00

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    // Insert code here to initialize your application
    self.countdownTimer = [[Timer alloc] init];

    [self.countdownTimer setTimerCount:0];
}

I've done it programatically with this solution: Convert Seconds Integer To HH:MM, iPhone but i want to use the NSDateFormatter. Help appreciated.

Thx for the quick answer, so i have to set the NSDateformatter programatically, because i have no option to do that in Inspector? — seinfeld, Mar 13 '13 at 15:47
there is a relative date checkbox, but i really don't know what that does.. you can make one pretty easily, in `-awakeFromNib` just make a formatter, and add to the field with `-addFormatter:` — Grady Player, Mar 13 '13 at 16:37
You can create an outlet for the date formatter and set the time zone in `-awakeFromNib`. — paulmelnikow, Mar 14 '13 at 02:57
@noa thx for the hint :) I created an outlet timerFormatter from the NSDateFormatter and set it with: `[_timerFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0.0]];` in applicationDidFinishLaunching method. — seinfeld, Mar 14 '13 at 04:10

score 1 · Accepted Answer · answered Mar 14 '13 at 05:02

1

Set the formatter's time zone to be your current time zone.

There isn't a way to do that in IB, but you can create an outlet for the date formatter and set the time zone in -awakeFromNib.

answered Mar 14 '13 at 05:02

paulmelnikow

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NSDateformatter added in Interface Builder on NSTextfield adds GMT difference

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