iOS get date by double seconds

+ (NSDate *)GetDateBySeconds :(double)seconds

{

    NSTimeInterval timeInterval = (NSTimeInterval)seconds;

    NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeInterval];

    return date;

}

+ (NSString *)GetDateStringBySeconds :(double)seconds

{

    NSDate *srcdate = [self GetDateBySeconds:seconds];

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

    date.dateFormat = @"yyyy-MM-dd, hh:mm:ss";

    

    NSString *datefrom = [NSString stringWithFormat:@"%@", [date stringFromDate:srcdate]];

    

    return datefrom;

}