iOS用戶協(xié)議界面實現(xiàn)方案（YYText實現(xiàn)部分文字的高亮點擊）

通常情況下注冊腥泥、登錄界面下方都會包含用戶協(xié)議和隱私政策的界面如下：

image1

實現(xiàn)思路

1. 左側(cè)選中框是個check按鈕
2. 閱讀并同意用戶協(xié)議和隱私政策部分是富文本
3. 給富文本中的“用戶協(xié)議”裹唆、“隱私政策”添加點擊事件

實現(xiàn)方案

1.  繼承UIView創(chuàng)建一個獨立視圖方便復用
2.  在視圖上添加check按鈕
3.  用YYText實現(xiàn)富文本和點擊事件

YYText

實現(xiàn)代碼

/// 用戶協(xié)議視圖
class UTUserAgreementView: UIView {

    /// 協(xié)議類型
    ///
    /// - user: 用戶協(xié)議
    /// - privacy: 隱私政策
    enum agreementType{
        case user
        case privacy
    }
    
    /// 選中事件
    let selectPS = PublishSubject<agreementType>()
    //界面高20 款240
    /// 核查選擇框
    lazy var checkBox: UIButton = {
        let view = UIButton()
        view.setImage(UIImage.init(named: "login_weigouxuan"), for: UIControl.State.normal)
        view.setImage(UIImage.init(named: "login_gouxuan"), for: UIControl.State.selected)
        view.addTarget(self, action: #selector(checkBoxAction(sender:)), for: .touchUpInside)
        view.isSelected = true
        self.addSubview(view)
        return view
    }()
    
    /// 協(xié)議文本
    lazy var agreeMentLB: YYLabel  = {
        //創(chuàng)建YYLabel
        let view = YYLabel()
        //創(chuàng)建富文本熊榛，設置默認font和color
        let text = NSMutableAttributedString.init(string: "閱讀并同意用戶協(xié)議和隱私政策", attributes: [.font : UIFont.systemFont(ofSize: 14)])
        text.yy_color = UIColor.UT79Color()
        let decoration = YYTextDecoration.init(style: YYTextLineStyle.single, width: 1, color: UIColor.UT79Color())
        //第一個特殊顯示區(qū)域，設置對應的font和color
        let rangeOne = NSRange.init(location: 5, length: 4)
        text.yy_setTextHighlight(rangeOne, color: UIColor.UT20Color(), backgroundColor: UIColor.clear, tapAction: { (view, string, range, rect) in
            //點擊事件回調(diào)
            self.selectPS.onNext(.user)
        })
        //第二個特殊顯示區(qū)域斯入，設置對應的font和color
        let rangeTwo = NSRange.init(location: 10, length: 4)
        text.yy_setTextHighlight(rangeTwo, color: UIColor.black, backgroundColor: UIColor.clear, tapAction: { (view, string, range, rect) in
            //點擊事件回調(diào)
            self.selectPS.onNext(.privacy)
        })
        text.yy_setTextUnderline(decoration, range: rangeOne)
        text.yy_setTextUnderline(decoration, range: rangeTwo)
        //加載富文本
        view.attributedText = text
        self.addSubview(view)
        return view
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.backgroundColor = UIColor.clear
        deploySubviews()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    private func deploySubviews(){
        agreeMentLB.snp.makeConstraints { (make) in
            make.centerX.equalToSuperview().offset(12.5)
            make.top.bottom.equalToSuperview()
        }
        
        checkBox.snp.makeConstraints { (make) in
            make.centerY.equalTo(agreeMentLB.snp.centerY).offset(-0.5)
            make.width.height.equalTo(20)
            make.right.equalTo(agreeMentLB.snp.left).offset(-5)
        }
    }
    
    /// 核驗按鈕
    ///
    /// - Parameter sender: 按鈕對象
    @objc private func checkBoxAction(sender: UIButton){
        sender.isSelected = !sender.isSelected
    }
}