iOS NSDateFormatter

First of all, you can use [NSDate date] to get current date, then NSDateFormatter to set the format you want. That's all.

    NSDate *srcdate = [NSDate date];
    NSDateFormatter *date = [[NSDateFormatter alloc] init];
    date.dateFormat = @"yyyy/MM/dd";
    
    NSString *datefrom = [NSString stringWithFormat:@"%@", [date stringFromDate:srcdate]];

yyyy
yy
MM(numeric)
MMM(Jan, Feb...)
MMMM(full Month)
dd
K(12)
H(24)
mm
ss
aa(AM/PM)
EEE(Week)
EEEE(Week Full)