Swift and swiftcode

Swift and swiftcode

Swift-calculate text height

 

Effect

 

Source code

/// String + StringHeight. swift // StringHeight /// Created by YouXianMing on 16/8/30. // Copyright©2016 YouXianMing. all rights reserved. // import UIKitextension String {/** Get the height with the string. -parameter attributes: The string attributes. -parameter fixedWidth: The fixed width. -returns: The height. */func heightWithStringAttributes (attributes: [String: AnyObject], fixedWidth: CGFloat)-> CGFloat {guard self. characters. count> 0 & fixedWidth> 0 else {return 0} let size = CGSizeMake (fixedWidth, CGFloat. max) let text = self as NSString let rect = text. boundingRectWithSize (size, options :. usesLineFragmentOrigin, attributes: attributes, context: nil) return rect. size. height}/** Get the height with font. -parameter font: The font. -parameter fixedWidth: The fixed width. -returns: The height. */func heightWithFont (font: UIFont = UIFont. systemFontOfSize (18), fixedWidth: CGFloat)-> CGFloat {guard self. characters. count> 0 & fixedWidth> 0 else {return 0} let size = CGSizeMake (fixedWidth, CGFloat. max) let text = self as NSString let rect = text. boundingRectWithSize (size, options :. usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil) return rect. size. height}/** Get the width with the string. -parameter attributes: The string attributes. -returns: The width. */func widthWithStringAttributes (attributes: [String: AnyObject])-> CGFloat {guard self. characters. count> 0 else {return 0} let size = CGSizeMake (CGFloat. max, 0) let text = self as NSString let rect = text. boundingRectWithSize (size, options :. usesLineFragmentOrigin, attributes: attributes, context: nil) return rect. size. width}/** Get the width with the string. -parameter font: The font. -returns: The string's width. */func widthWithFont (font: UIFont = UIFont. systemFontOfSize (18)-> CGFloat {guard self. characters. count> 0 else {return 0} let size = CGSizeMake (CGFloat. max, 0) let text = self as NSString let rect = text. boundingRectWithSize (size, options :. usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil) return rect. size. width }}