規解檔沒學好，所以專門寫個簡單demo做測試，但是一直有無法解檔出數據，肯定是哪裡處理不當，望各位不吝賜教。

如下我有一個dogHouse模型類別,想要做規解檔操作，

//类里面有一个dogs的对象数组
class dogHouse: NSObject , NSCoding{
    var dogs:[dog]?

   required init(coder aDecoder: NSCoder)
    {
        dogs = aDecoder.decodeObject(forKey: "dogs") as? [dog]
        super.init()
    }
    
    func encode(with aCoder: NSCoder) {
        if dogs != nil{
            aCoder.encode(dogs, forKey: "dogs")
        }
    }

   class dog: NSObject , NSCoding {
       //名字属性
        var name : String?
        
        required init(coder aDecoder: NSCoder) {
            name = aDecoder.decodeObject(forKey: "name") as! String?
            super.init()
        }
        
        func encode(with aCoder: NSCoder) {
            if name != nil{
                aCoder.encode(name, forKey: "name")
            } 
        }
    }

//下面是规解档的操作
//MARK: - 规解
func saveModel() -> Bool{
        return NSKeyedArchiver.archiveRootObject(self, toFile: ICModelPath)
    }

//总是会报错不知道是为什么？
//reason: '*** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (_TtCC11ArchiveTest8dogHouse3dog) for key (NS.objects); the class may be defined in source code or a library that is not linked'
//MARK: - 解档
class func loadArchiver() -> [dog]?{
       let obj = NSKeyedUnarchiver.unarchiveObject(withFile: ICModelPath) as? dogHouse
        if obj != nil{
            return obj?.dogs
        }
        return nil
}

簡書看到這麼一篇文章

在使用對物件陣列歸檔解檔 要特別小心 iOS 下對於自訂的物件
要實現歸檔操作必須注意

只有使用nsdata作為中間者轉換具體思路

归档 customclass ->实现nscoding->NSKeyedArchiver.archivedDataWithRootObject一个实例到nsdata->归档这个nsdata
解档  过程相反NSKeyedUnarchiver.unarchive as nsdata->cutsom=NSKeyedUnarchiver.narchiveObjectWithData->终于拿到

所以程式碼改成這樣

//MARK: - 规档
    func saveModel() -> Bool{
        let data = NSKeyedArchiver.archivedData(withRootObject: self)
        return NSKeyedArchiver.archiveRootObject(data, toFile: ICModelPath)
    }

//MARK: - 解档
class func loadArchiver() -> [dog]?{
        let arch = NSData.init(contentsOf: URL(fileURLWithPath: ICModelPath))
        print(arch)
        if let data = arch {
            let unarchiver = NSKeyedUnarchiver(forReadingWith: data as Data)
            if let temp = unarchiver.decodeObject() as? dogHouse{
                print(temp)
               return temp.dogs
            }
        }
        //一直解档不出来数据，断点一直断在这里了
        return nil
    }

謝謝回答。