如何将本地化的日期字符串转换为NSDate

Question

我有NSString * localized_Date = minutesSinceMidnightToLocalizedTime（时间单位）

我收到这个字符串是凌晨4:30，晚上10点

如何将此字符串转换为NSDate？ 请告诉我。

Answer 1

NSDateFormatter是您的朋友，请使用适合您日期/时间的格式

NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease]; 
[df setDateFormat:[NSString stringWithFormat:@"dd MMM yyyy HH:mm"]]; 
NSDate *_date = [df dateFromString:string]; 

约翰

Answer 2

试试这段代码：

NSString *dateString = @"4:30 am";

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

[dateFormatter setDateFormat:@"hh:mm a"];

NSDate *date = [dateFormatter dateFromString:dateString];

希望这会对你有所帮助。

Answer 3

我知道它有点长代码，但我希望尽可能让它变得可读。 此代码使用minutesSinceMidnight而不是本地化字符串。

NSDate *currentDate = [NSDate date];
NSDateComponents *currentDateComponents = [calendar components:NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:currentDate];
NSDateComponents *currentDateToMidnight = [[NSDateComponents alloc] init];
[currentDateToMidnight setHour:-[currentDateComponents hour]];
[currentDateToMidnight setMinute:-[currentDateComponents minute]];
[currentDateToMidnight setSecond:-[currentDateComponents second]];
NSDate *midnight = [calendar dateByAddingComponents:currentDateToMidnight toDate:currentDate options:0];
NSDateComponents *midnightToDesiredDate = [[NSDateComponents alloc] init];
[midnightToDesiredDate setMinute:minutesSinceMidnight];
NSDate *desiredDate = [calendar dateByAddingComponents:midnightToDesiredDate toDate:midnight options:0];