如何將sizeWithFont轉換爲sizeWithAttributes（iOS 7）

Question

如何在iOS 7 SDK中獲得NSString的CGSize值，只需要將sizeWithAttributes轉換爲下面的代碼行即可。

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

Answer 1

你可以試試這個...

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