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我有一个我的类实例,它基本上是来自我自己类的另一个对象的可变数组。我需要这个存储持久性数据,但我有麻烦,我使用方法类数据类型的持久性数据
-(void)archiveFavorites {
Singleton *singleton = [Singleton sharedSingleton];
NSLog(@"archiving");
GameDatabase *favoritesToArchive = singleton.favorites;
[NSKeyedArchiver archiveRootObject:favoritesToArchive toFile:[self archivePath]];
}
-(NSString *)archivePath {
NSString *docDir =
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
return [docDir stringByAppendingPathComponent: @"Favorites.dat"];
}
在我的视图控制器试图存档。然后我打电话
[viewController archiveFavorites];
在我的应用程序委托“应用的位置信息并输入背景”
基本上我想保存我自己的类(GameDatabase)的实例在存档。当档案我抛出的异常:
编辑:好了,所以继承人什么我想在我的两个类,现在实施: GameDatabase.m
- (void)encodeWithCoder:(NSCoder *)encoder{
[encoder encodeObject:games forKey:@"Games"];
}
- (id)initWithCoder:(NSCoder *)decoder{
if(self = [super init])
{
games = [decoder decodeObjectForKey:@"Games"];
}
return self;
}
GameRecord.m
- (id)initWithCoder:(NSCoder *)decoder {
if (self = [super init]) {
self.name = [decoder decodeObjectForKey:@"Name"];
self.gameRules = [decoder decodeObjectForKey:@"GameRules"];
self.players = [decoder decodeIntForKey:@"Players"];
self.gameType = [decoder decodeIntForKey:@"GameType"];
self.drinkType = [decoder decodeIntForKey:@"DrinkType"];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)encoder {
[encoder encodeObject:self.name forKey:@"Name"];
[encoder encodeObject:self.gameRules forKey:@"GameRules"];
[encoder encodeInt:self.players forKey:@"Players"];
[encoder encodeInt:self.gameType forKey:@"GameType"];
[encoder encodeInt:self.drinkType forKey:@"DrinkType"];
}
我需要将它添加到协议中还是只实现这两个类? –
这两种方法是协议。除非你问另外一个问题? –
哇,我所做的只是添加这两种方法,它似乎工作,但我没有把任何代码放进去。那是对的吗? –