相关疑难解决方法(0)

我有这个日期格式化程序:

 NSDateFormatter *timeFormatter = [[NSDateFormatter alloc] init];
 [timeFormatter setDateFormat:@"HH:mm"];

如果我用这个:

 NSDate *myDate = [timeFormatter dateFromString:@"13:00"];

它返回:

 "1:00"

这是因为模拟器已关闭24小时.但对于我的应用程序,我真的需要"13:00"而不是"1:00"

--- 编辑1 ---

添加了新代码:

NSCalendar *calendar= [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSCalendarUnit unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;

NSDateFormatter *timeFormatter = [[NSDateFormatter alloc] init];
[timeFormatter setDateFormat:@"HH:mm"];
NSDate *timeForFirstRow = [timeFormatter dateFromString:@"13:00"];
NSDateComponents *dateComponents = [calendar components:unitFlags fromDate:timeForFirstRow];
NSInteger hour = [dateComponents hour]; //This will be 1 instead of 13
NSInteger minute = [dateComponents minute];