Iphone 检查与UIDatePicker一起使用的24小时模式或AM/PM模式

我有一个环绕UIDatePicker的边框，用自定义视图隐藏它周围的蓝色。。我知道在时间模式下，不可能将其设置为专门的AM/PM日期选择器或24小时日期选择器。不过，我想知道如何才能找到它当前的设置，这样我就可以围绕它调整边框，因为它们的大小都不同。

这很简单，您应该检查myDateString中的AMSymbol和PMSymbol是否为“NSNotFound”：

+(BOOL) is24h {
  NSDateFormatter *myFormatter = [[NSDateFormatter alloc] init];
  [myFormatter setLocale:[NSLocale currentLocale]]; 
  [myFormatter setDateStyle:NSDateFormatterNoStyle]; 
  [myFormatter setTimeStyle:NSDateFormatterShortStyle]; 

  NSString *myDateString = [myFormatter stringFromDate:[NSDate date]]; 
  NSRange myAmRange = [myDateString rangeOfString:[myFormatter AMSymbol]]; 
  NSRange myPmRange = [myDateString rangeOfString:[myFormatter PMSymbol]]; 

  return (myAmRange.location == NSNotFound && myPmRange.location == NSNotFound);
}

---

这很简单，您应该检查myDateString中的AMSymbol和PMSymbol是否为“NSNotFound”：

+(BOOL) is24h {
  NSDateFormatter *myFormatter = [[NSDateFormatter alloc] init];
  [myFormatter setLocale:[NSLocale currentLocale]]; 
  [myFormatter setDateStyle:NSDateFormatterNoStyle]; 
  [myFormatter setTimeStyle:NSDateFormatterShortStyle]; 

  NSString *myDateString = [myFormatter stringFromDate:[NSDate date]]; 
  NSRange myAmRange = [myDateString rangeOfString:[myFormatter AMSymbol]]; 
  NSRange myPmRange = [myDateString rangeOfString:[myFormatter PMSymbol]]; 

  return (myAmRange.location == NSNotFound && myPmRange.location == NSNotFound);
}