存档和取消存档自定义类(有一个属性作为对象数组),总是失败
问题描述:
我在网上搜索了很长时间。但没用。请帮助或尝试提供一些想法如何实现这一点。存档和取消存档自定义类(有一个属性作为对象数组),总是失败
当解除存档应用程序崩溃,我得到这个消息:
Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', 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'
这是什么意思? 任何人都可以帮忙?提前致谢。
现在,我认识到终止,因为其他代码,就像这样: enter image description here
,如果我尝试: enter image description here 它做得很好,买为何在viewDidLoad中的代码写做别的哪种方法联系起来?类?
我有一个类:
let ModelPath = "Model.plist".cacheDir()
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 {
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")
}
}
//ArchiveModels
func saveModel() -> Bool{
return NSKeyedArchiver.archiveRootObject(self, toFile: ICModelPath)
}
//UnArchiveModels
class func loadArchiver() -> [Dog]?{
let obj = NSKeyedUnarchiver.unarchiveObject(withFile: ICModelPath)
if obj != nil {
print(obj.debugDescription)
let model = obj as? dogHouse
return model?.dogs
}
return nil
}
}
答
也许你错过了在init
函数中的参数?
required init(coder aDecoder: NSCoder)
{
dogs = aDecoder.decodeObject(forKey: "dogs") as? [Dog]
super.init(aDecoder) //HERE
}