Replacement for deprecated -sizeWithFont:constrainedToSize:lineBreakMode: in iOS 7?

Question

You could try this:

CGRect textRect = [text boundingRectWithSize:size
                                 options:NSStringDrawingUsesLineFragmentOrigin
                              attributes:@{NSFontAttributeName:FONT}
                                 context:nil];

CGSize size = textRect.size;

Just change "FONT" for an "[UIFont font....]"

As we cant use sizeWithAttributes for all iOS greater than 4.3 we have to write conditional code for 7.0 and previous iOS.

1) Solution 1:

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")) {
   CGSize size = CGSizeMake(230,9999);
   CGRect textRect = [specialityObj.name  
       boundingRectWithSize:size
                    options:NSStringDrawingUsesLineFragmentOrigin
                 attributes:@{NSFontAttributeName:[UIFont fontWithName:[AppHandlers zHandler].fontName size:14]}
                    context:nil];
   total_height = total_height + textRect.size.height;   
}
else {
   CGSize maximumLabelSize = CGSizeMake(230,9999); 
   expectedLabelSize = [specialityObj.name sizeWithFont:[UIFont fontWithName:[AppHandlers zHandler].fontName size:14] constrainedToSize:maximumLabelSize lineBreakMode:UILineBreakModeWordWrap]; //iOS 6 and previous. 
   total_height = total_height + expectedLabelSize.height;
}

2) Solution 2

UILabel *gettingSizeLabel = [[UILabel alloc] init];
gettingSizeLabel.font = [UIFont fontWithName:[AppHandlers zHandler].fontName size:16]; // Your Font-style whatever you want to use.
gettingSizeLabel.text = @"YOUR TEXT HERE";
gettingSizeLabel.numberOfLines = 0;
CGSize maximumLabelSize = CGSizeMake(310, 9999); // this width will be as per your requirement

CGSize expectedSize = [gettingSizeLabel sizeThatFits:maximumLabelSize];

The first solution is sometime fail to return proper value of height. so use another solution. which will work perfectly.

The second option is quite well and working smoothly in all iOS without conditional code.

Here is simple solution :

Requirements :

CGSize maximumSize = CGSizeMake(widthHere, MAXFLOAT);
UIFont *font = [UIFont systemFontOfSize:sizeHere];

Now As constrainedToSizeusage:lineBreakMode: usage is deprecated in iOS 7.0:

CGSize expectedSize = [stringHere sizeWithFont:font constrainedToSize:maximumSize lineBreakMode:NSLineBreakByWordWrapping];

Now usage in greater version of iOS 7.0 will be:

// Let's make an NSAttributedString first
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:stringHere];
//Add LineBreakMode
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
[paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
[attributedString setAttributes:@{NSParagraphStyleAttributeName:paragraphStyle} range:NSMakeRange(0, attributedString.length)];
// Add Font
[attributedString setAttributes:@{NSFontAttributeName:font} range:NSMakeRange(0, attributedString.length)];

//Now let's make the Bounding Rect
CGSize expectedSize = [attributedString boundingRectWithSize:maximumSize options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;

Below are two simple methods that will replace these two deprecated methods.

And here are the relevant references:

If you are using NSLineBreakByWordWrapping, you don't need to specify the NSParagraphStyle, as that is the default: https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSParagraphStyle_Class/index.html#//apple_ref/occ/clm/NSParagraphStyle/defaultParagraphStyle

You must get the ceil of the size, to match the deprecated methods' results. https://developer.apple.com/library/ios/documentation/UIKit/Reference/NSString_UIKit_Additions/#//apple_ref/occ/instm/NSString/boundingRectWithSize:options:attributes:context:

+ (CGSize)text:(NSString*)text sizeWithFont:(UIFont*)font {    
    CGSize size = [text sizeWithAttributes:@{NSFontAttributeName: font}];
    return CGSizeMake(ceilf(size.width), ceilf(size.height));
}

+ (CGSize)text:(NSString*)text sizeWithFont:(UIFont*)font constrainedToSize:(CGSize)size{
    CGRect textRect = [text boundingRectWithSize:size
                                     options:NSStringDrawingUsesLineFragmentOrigin
                                  attributes:@{NSFontAttributeName: font}
                                     context:nil];
    return CGSizeMake(ceilf(textRect.size.width), ceilf(textRect.size.height));
}

In most cases I used the method sizeWithFont:constrainedToSize:lineBreakMode: to estimate the minimum size for a UILabel to accomodate its text (especially when the label has to be placed inside a UITableViewCell)...

...If this is exactly your situation you can simpy use the method:

CGSize size = [myLabel textRectForBounds:myLabel.frame limitedToNumberOfLines:mylabel.numberOfLines].size;

Hope this might help.