Swift or Objective-C IconFont 字体的使用

UILabel * label = [[UILabel alloc] initWithFrame:self.view.bounds];
UIFont *iconfont = [UIFont fontWithName:@"uxIconFont" size: 34];
label.font = iconfont;
label.text = @"\U00003439 \U000035ad \U000035ae \U000035af \U000035eb \U000035ec";
[self.view addSubview: label];

//一般情况下，iconfont多用于UIImage类。可以写一个UIImage+iconfont的分类来实现icon作为图片的功能。
+ (UIImage*)imageWithIcon:(NSString*)iconCode inFont:(NSString*)fontName size:(NSUInteger)size color:(UIColor*)color {
    CGSize imageSize = CGSizeMake(size, size);
    UIGraphicsBeginImageContextWithOptions(imageSize, NO, [[UIScreen mainScreen] scale]);
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, size, size)];
    label.font = [UIFont fontWithName:fontName size:size];
    label.text = iconCode;
    if(color){
        label.textColor = color;
    }
    [label.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *retImage = UIGraphicsGetImageFromCurrentImageContext();
    return retImage;
}

 let label =  UILabel(frame: CGRect(x: 0, y: 0, width: info.textSize!, height: info.textSize!))
 label.font = UIFont(name: "IconFont", size: 25)
 label.textAlignment = .center
 label.text = \u{e60a}
 self.view.addSubview(label)    

//一般情况下，iconfont多用于UIImage类。可以写一个分类继承 UIImage 来实现icon作为图片的功能。
open class func iconbWithInfo(_ info: IconInfo) -> UIImage{
        
        let imageSize: CGSize = CGSize(width: info.textSize!, height: info.textSize!)
        UIGraphicsBeginImageContextWithOptions(imageSize, false, UIScreen.main.scale)
        
        let label =  UILabel(frame: CGRect(x: 0, y: 0, width: info.textSize!, height: info.textSize!))
        label.font = UIFont(name: "IconFont", size: 25)
        label.textAlignment = .center
        label.text = info.text
        
        if (info.textColor != nil) {
            label.textColor = info.textColor
        }
        
        label.layer.render(in: UIGraphicsGetCurrentContext()!)
        let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
        return image
 
    }