'sizeWithFont:constrainedToSize:' is deprecated: first deprecated in iOS 7.0 - Use -boundingRectWithSize:options:attributes:context:

解决方法：

 

NSString *myText = @"xxxxx";

将

CGSize mySize =[myText sizeWithFont:myFont constrainedToSize:CGSizeMake(200,100)];

 

改写成：

CGSize mySize = [myText boundingRectWithSize:CGSizeMake(200,100) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:myFont} context:nil].size;