如何将sizeWithFont转换为sizeWithAttributes（iOS 7）

Question

如何在iOS 7 SDK中获得NSString的CGSize值，只需要将sizeWithAttributes转换为下面的代码行即可。

CGSize size = [text sizeWithFont:[UIFont systemFontOfSize:FONT_SIZE] constrainedToSize:constraint lineBreakMode:NSLineBreakByWordWrapping]; 

Answer 1

你可以试试这个...

NSDictionary *attributes = @{NSFontAttributeName: [UIFont fontWithName:@"HelveticaNeue" size:14]}; 

[text sizeWithAttributes:attributes] 

或

CGRect rect = [text boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil]; 

的