使用NSDateFormatter更改日期格式

Question

我想使用類似2015-08-14日期格式，但不幸的是我正在使用這種格式16/11/15

下面是我用來獲取所需輸出的代碼。

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];

NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
[dateFormatter setTimeZone:gmt];

[dateFormatter setDateStyle:kCFDateFormatterShortStyle];

NSString *formattedDateString = [dateFormatter stringFromDate:selectedDate];

誰能建議如何解決這個問題？

Answer 1

只需刪除[dateFormatter setDateStyle:NSDateFormatterShortStyle];

Answer 2

-(NSString*)stringFromDateWithFormat:(NSString*)formatString{

    NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
    dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
    dateFormatter.dateFormat = formatString;
    return [dateFormatter stringFromDate:self];
}

Answer 3

試試看：

NSDate *selectedDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];

NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:@"GMT"];
[dateFormatter setTimeZone:gmt];
NSString *formattedDateString = [dateFormatter stringFromDate:selectedDate];

NSLog(@"formattedDateString = %@", formattedDateString); // Prints 2015-10-15

Answer 4

試試這個。

NSDate *currDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"YYYY-MM-dd"];
NSString *dateString = [dateFormatter stringFromDate:currDate];
NSLog(@"date is %@",dateString);