String to a Format yyyy-MM-dd HH:mm:ss Iphone

I have an nsstring ,see below开发者_开发问答

NSString *Mydate=@"9/8/2011"; in month/day/year format.

I want this string to be in the format yyyy-MM-dd HH:mm:ss.

for eg: 2011-09-08 15:51:57

so that i need to show the string in a label in the later format.

Thanks all.

Try below code with valid input string that will help you.

    NSString *dateStr = @"9/8/2011 11:10:9";
    NSDateFormatter *dtF = [[NSDateFormatter alloc] init];
    [dtF setDateFormat:@"d/M/yyyy hh:mm:s"];
    NSDate *d = [dtF dateFromString:dateStr];
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyy-MM-dd hh:mm:s"];
    NSString *st = [dateFormat stringFromDate:d];   
    NSLog(@"%@",st);
    [dtF release];
    [dateFormat release];

You may use NSDateFormatter