         // 展示动效
         popOutsideWithDuration(duration: 0.5)
         // 模拟数据
-        let title = titleLabel?.text ?? ""
-        var praiseNum = Int(title) ?? 0
+        let titleText = titleLabel?.text ?? ""
+        var praiseNum = Int(titleText) ?? 0
         praiseNum += 1
         setTitle("\(praiseNum)", for: .normal)
     }

        setTitleColor(.orange, for: .selected)
        
        titleLabel?.font = UIFont.systemFont(ofSize: 12)

        setImage(#imageLiteral(resourceName: "praise"), for: .normal)
        setImage(#imageLiteral(resourceName: "praise_touch"), for: .selected)
        
        titleEdgeInsets = UIEdgeInsetsMake(0, 5, 0, 0)

        addTarget(self, action: #selector(praiseButtonDidClicked(button:)), for: .touchUpInside)
    }
    

        layout()
    }
    
    // 取消高亮效果
    override var isHighlighted: Bool {
        set { }
        get { return false }
