Swift 在UILabel前面或者后面插入图标

前言

有时候我们的设计图可能需要在文字的前面或者加入图标，为了代码简洁，我们直接使用UILabel来实现。

一、设计图显示如下：

或者

二、实现代码

1、图标在前面

		let img = UIImage(named: "refresh L2")
        //创建NSTextAttachment对象
        let attachment = NSTextAttachment()
        //给NSTextAttachment 对象设置图片
        attachment.image = img
        //设置NSTextAttachment对象的位置 目的是要图片和UILabel的高度一致
        let font = FontWithSize(12)
        attachment.bounds = CGRect(x: 0, y: 0, width: img?.size.width ?? 0, height: img?.size.height ?? 0)
        //给富文本赋值
        let attrImage = NSAttributedString(attachment: attachment)
        let attrMub = NSMutableAttributedString()
        //给可变的富文本对象赋值
        let attrStr = NSAttributedString(string: "上次读到" + "  ", attributes: [NSAttributedString.Key.font : font, NSAttributedString.Key.foregroundColor: UIColorFromRGB("0c0c1c").withAlphaComponent(0.7)])
        attrMub.append(attrStr)
        attrMub.append(attrImage)
		statusLabel.attributedText =  attrMub

2、图标在后面

			let img = UIImage(named: "mine_xxxx")
            //创建NSTextAttachment对象
            let attachment = NSTextAttachment()
            //给NSTextAttachment 对象设置图片
            attachment.image = img
            //设置NSTextAttachment对象的位置 目的是要图片和UILabel的高度一致
            let font = FontWithSize(12)
            attachment.bounds = CGRect(x: 0, y: -2.5, width: img?.size.width ?? 0, height: img?.size.height ?? 0)
            //给富文本赋值
            let attrImage = NSAttributedString(attachment: attachment)
            let attrMub = NSMutableAttributedString()
            //给可变的富文本对象赋值
            let attrStr = NSAttributedString(string: "哈哈哈哈", attributes: [NSAttributedString.Key.font : font, NSAttributedString.Key.foregroundColor: UIColorFromRGB("#FA4646")])
            attrMub.append(attrStr)
            attrMub.append(attrImage)
           statusLabel.attributedText =  attrMub

END.