swift中简单KVC使用

创建完成的person类

@objc class Person: NSObject {
    @objc dynamic var name:String?

    init(name: String) {
        self.name = name;

    }
    

 使用

       var person:Person!

       self.person = Person.init(name: "xiaoming")
        print("name:\(person.name)")//name:Optional("xiaoming")
        
        // 取值
        var value = self.person.value(forKey: "name") as? String //name:Optional("xiaoming")
        print("name:\(value)")//name:Optional("xiaoming")
        
        //使用
        self.person.setValue("xiaohua", forKeyPath: "name")
        print("name:\(person.name)")//name:Optional("xiaohua")
        
        //使用字典
        let dict = ["name":"小光"]
        self.person.setValuesForKeys(dict)
        let dictOut = self.person.dictionaryWithValues(forKeys: ["name"])
        print("\(dictOut)")//["name": 小光]