計(jì)算label的文字高度:
func getTextHeigh(textStr :? String, font : UIFont, width : CGFloat)? -> CGFloat{?
? ? ? ? let normalText : NSString = textStr as NSString
? ? ? ? let size = CGSize(width: width, height:1000)? ?//CGSizeMake(width,1000)
? ? ? ? let dic = NSDictionary(object: font, forKey : kCTFontAttributeName as! NSCopying)
? ? ? ? let stringSize = normalText.boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: dic as? [NSAttributedStringKey:Any], context:nil).size
? ? ? ? return? stringSize.height
? ? }
