Re: 12 hr vs 24 hr time display
Re: 12 hr vs 24 hr time display
- Subject: Re: 12 hr vs 24 hr time display
- From: Alex Zavatone <email@hidden>
- Date: Tue, 03 Jan 2017 12:47:03 -0600
iOS or Mac?
In any case, this will help you out to no end.
http://NSDateformatter.com/
And note that the case of the letters you use in your formatter matter.
GL.
- Alex Zavatone
On Jan 3, 2017, at 12:16 AM, Sandor Szatmari wrote:
> I am working on a small application where the primary function is to display the time to the user. My hope was to honor the user's preference setting. I am either missing something or honoring the user's preference is harder than expected.
>
> So, there are two places to set 24 hr time display.
>
> 1. Date & Time preference panel
> 2. Language & Region preference panel
>
> The cocoa frameworks react differently depending on where you set this.
>
> If set by method 1, cocoa frameworks seem unaware of this setting and it appears this is cosmetic in that it only affects the display of the clock in the NSStatusBar.
>
> If set by method 2, cocoa frameworks reflect this and the Date & Time setting is disabled noting that the setting has been overridden.
>
> So if a user uses method 1, potentially unaware of method 2, how should one go about determining the user's intentions.
>
> There are deprecated methods using: (didn't try, it's deprecated)
> NSUserDefaults with the key NSShortTimeDateFormatString
>
> There are supported methods using: (works with method 2)
> NSString *format = [NSDateFormatter dateFormatFromTemplate:@"j" options:0 locale:[NSLocale currentLocale]];
> BOOL is24Hour = ([format rangeOfString:@"a"].location == NSNotFound);
>
> Can anyone provide any clarity here?
>
> Sandor
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