我不知道为什么我们都错过了这个:localizedStringFromDate:dateStyle:timeStyle:

NSString *dateString = [NSDateFormatter localizedStringFromDate:[NSDate date] 
                                                      dateStyle:NSDateFormatterShortStyle 
                                                      timeStyle:NSDateFormatterFullStyle];
NSLog(@"%@",dateString);

输出'13/06/12 00:22:39 GMT+ 00:00 '

如果你没有NSDate -descriptionWithCalendarFormat:timeZone:locale: available(我不相信iPhone/Cocoa Touch包括这个)，你可能需要使用strftime和一些c风格的字符串。您可以使用NSDate -timeIntervalSince1970从NSDate中获取UNIX时间戳。

#ios #swift #convertDateinString

简单地像这样按你传递的格式“将日期转换为字符串”:

let formatter = DateFormatter()

formatter.dateFormat = "dd-MM-YYYY" // pass formate here
        
let myString = formatter.string(from: date) // this will convert Date in String

注意:你可以指定不同的格式，如"yyyy-MM-dd"， "yyyy"， "MM"等。

迅速:

var formatter = NSDateFormatter()
formatter.dateFormat = "yyyy"
var dateString = formatter.stringFromDate(YourNSDateInstanceHERE)

  NSDateFormatter *dateformate=[[NSDateFormatter alloc]init];
  [dateformate setDateFormat:@"yyyy"]; // Date formater
  NSString *date = [dateformate stringFromDate:[NSDate date]]; // Convert date to string
  NSLog(@"date :%@",date);

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:myNSDateInstance];
NSInteger year = [components year];
// NSInteger month = [components month];
NSString *yearStr = [NSString stringWithFormat:@"%ld", year];