Calculate Label Height dynamically in iOS

Calculate_Label_Height.m

/**
 * Calculate height for a fixed weidht label
 * @param UILabel for which height to be calculated
**/
-(double)getLabelHeightForLabel:(UILabel *)label{
    CGSize constrainedSize = CGSizeMake(label.frame.size.width, 1000);
    NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys: label.font, NSFontAttributeName,nil];
    NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:label.text attributes:attributesDictionary];
    CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];
    if (requiredHeight.size.width > label.frame.size.width) {
        requiredHeight = CGRectMake(0,0, label.frame.size.width, requiredHeight.size.height);
    }
   return requiredHeight.size.height;
}