Dynamically getting height of UILabel according to Text return different Value for iOS 7.0 and iOS 6.1

Question

I am using the this method for getting the height of the UILabel Dynamically:

+(CGSize) GetSizeOfLabelForGivenText:(UILabel*)label Font:(UIFont*)fontForLabel Size:  (CGSize)LabelSize{     label.numberOfLines = 0;     CGSize labelSize = [label.text sizeWithFont:fontForLabel constrainedToSize:LabelSize lineBreakMode:NSLineBreakByCharWrapping];     return (labelSize); } 

With this solution I am getting the exact size of UILabel if my code is running on below iOS 8 but if I run my application on iOS7 then it is returns a different value.

Answer 1

You have to dynamically set the frame, like below:

Tested on iOS 6 to iOS 12.2

Swift:

let constrainedSize = CGSize(width: self.titleLable.frame.size.width, height:9999)  let attributesDictionary = [NSAttributedString.Key.font: UIFont.init(name: "HelveticaNeue", size: 11.0)]  let string = NSAttributedString.init(string: "textToShow", attributes: attributesDictionary as [NSAttributedString.Key : Any])  var requiredHeight = string.boundingRect(with: constrainedSize, options: .usesLineFragmentOrigin, context: nil)   if (requiredHeight.size.width > self.titleLable.frame.size.width) {     requiredHeight = CGRect(x: 0, y: 0, width: self.titleLable.frame.size.width, height: requiredHeight.size.height) } var newFrame = self.titleLable.frame newFrame.size.height = requiredHeight.size.height self.titleLable.frame = newFrame 

Objective C:

CGSize constrainedSize = CGSizeMake(self.resizableLable.frame.size.width  , 9999);  NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:                                       [UIFont fontWithName:@"HelveticaNeue" size:11.0], NSFontAttributeName,                                       nil];  NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:@"textToShow" attributes:attributesDictionary];  CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];  if (requiredHeight.size.width > self.resizableLable.frame.size.width) {     requiredHeight = CGRectMake(0,0, self.resizableLable.frame.size.width, requiredHeight.size.height); } CGRect newFrame = self.resizableLable.frame; newFrame.size.height = requiredHeight.size.height; self.resizableLable.frame = newFrame;