12 hr vs 24 hr time display
12 hr vs 24 hr time display
- Subject: 12 hr vs 24 hr time display
- From: Sandor Szatmari <email@hidden>
- Date: Tue, 03 Jan 2017 01:16:01 -0500
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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