UILabel auto size error on iOS 7 - iphone

Question

I'm making my app transition to iOS 7 and have this method (already modified for iOS 7, using boundingRectWithSize...):
+ (CGSize)messageSize:(NSString*)message {
NSDictionary *attributes = #{NSFontAttributeName : [UIFont fontWithName:#"Futura-Medium" size:13]};
CGRect frame = [message boundingRectWithSize:CGSizeMake([PTSMessagingCell maxTextWidth], CGFLOAT_MAX) options:NSStringDrawingUsesFontLeading attributes:attributes context:nil];
return frame.size;
}
I am getting this appearance:
The message UILabel is being cut. It feels like line spacing is too big. It tried many other answers I found but none of them work.
If someone knows how to help me, I appreciate! ;)
Thanks!

Answer 1

Try changing NSStringDrawingUsesFontLeading as your option to NSStringDrawingUsesLineFragmentOrigin.
If you were only supporting iOS 6 and iOS 7, then I would definitely change all of your NSString's sizeWithFont:... to the NSAttributeString's boundingRectWithSize. Starting in iOS 6, the NSAttributedString's NSStringDrawing functions were introduced and they're threadsafe unlike the old NSString+UIKit methods we're used to (eg. sizeWithFont:..., etc), which were UIStringDrawing functions (and act unpredictably when you use them from a non-main thread. It'll save you a lot of headache if you happen to have a weird multi-threading corner case! Here's how I converted NSString's sizeWithFont:constrainedToSize::
What used to be:
NSString *text = ...;
CGFloat width = ...;
UIFont *font = ...;
CGSize size = [text sizeWithFont:font
constrainedToSize:(CGSize){width, CGFLOAT_MAX}];
Can be replaced with:
NSString *text = ...;
CGFloat width = ...;
UIFont *font = ...;
NSAttributedString *attributedText =
[[NSAttributedString alloc]
initWithString:text
attributes:#
{
NSFontAttributeName: font
}];
CGRect rect = [attributedText boundingRectWithSize:(CGSize){width, CGFLOAT_MAX}
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
CGSize size = rect.size;
Please note the documentation mentions:
In iOS 7 and later, this method returns fractional sizes (in the size
component of the returned CGRect); to use a returned size to size
views, you must use raise its value to the nearest higher integer
using the ceil function.
So to pull out the calculated height or width to be used for sizing views, I would use:
CGFloat height = ceilf(size.height);
CGFloat width = ceilf(size.width);

Answer 2

I think you are updating your label frame from either viewDidLoad or viewWillAppear, so it is not working.
if you will update frame of label from viewDidAppear method then you will get updated frame of label.
I am not sure why this is happened, I think it is iOS 7 bug.

Answer 3

Try this
+ (CGSize)messageSize:(NSString*)message {
CGSize nameSize = [message sizeWithFont:[UIFont fontWithName:#"Futura-Medium" size:13]
constrainedToSize:CGSizeMake(maxWidth, maxHeight) lineBreakMode:NSLineBreakByWordWrapping];
NSLog(#"width = %f, height = %f", nameSize.width, nameSize.height);
return nameSize;
}