标签：
CGSize mySize = [myText boundingRectWithSize:CGSizeMake(200,100) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:myFont} context:nil].size;
'sizeWithFont:constrainedToSize:' is deprecated: first deprecated in iOS 7.0 - Use -boundingRectWithSize:options:attributes:context:
原文地址：http://www.cnblogs.com/tonyxu/p/4297337.html
