尝试插入非属性值Objective C

嗨，我想创build一个餐馆对象，我的应用程序有不同的餐馆列表，我希望能够为用户添加优惠餐厅，这个代码是不工作

- (IBAction)toggleFav:(id)sender { Restaurant *resto = [self restaure]; NSMutableDictionary *dic = [[NSMutableDictionary alloc] init]; [dic setObject:resto.price forKey:@"restoPrice"]; [dic setObject:resto.restaurantId forKey:@"restaurantId"]; [dic setObject:resto.restoAbout forKey:@"restoAbout"]; [dic setObject:resto.restoAddress forKey:@"restoAddress"]; [dic setObject:resto.restoBeverages forKey:@"restoBeverages"]; [dic setObject:resto.restoCategory forKey:@"restoCategory"]; [dic setObject:resto.restoEmail forKey:@"restoEmail"]; [dic setObject:resto.restoLogo forKey:@"restoLogo"]; [dic setObject:resto.restoName forKey:@"restoName"]; [dic setObject:resto.restoPhone forKey:@"restoPhone"]; [dic setObject:resto.restoCity forKey:@"restoCity"]; NSArray *dicArray = [dic allKeys]; if([sender isSelected]){ //... [sender setSelected:NO]; NSMutableArray *array = [[[NSUserDefaults standardUserDefaults] objectForKey:@"restoName"] mutableCopy]; [array removeObject:dicArray]; [[NSUserDefaults standardUserDefaults] setObject:array forKey:@"restoName"]; } else { //... [sender setSelected:YES]; NSMutableArray *array = [[[NSUserDefaults standardUserDefaults] objectForKey:@"restoName"] mutableCopy]; [array addObject:dicArray]; [[NSUserDefaults standardUserDefaults] setObject:array forKey:@"restoName"]; [[NSUserDefaults standardUserDefaults] synchronize]; //NSLog(@"%@",[[NSUserDefaults standardUserDefaults] stringForKey:@"restoName"]); } } 

''类'__NSCFArray'。 请注意，属性列表中的字典和数组也必须仅包含属性值。

Answer 1

如果你不想担心所有的字典值是属性列表types，那么你可以简单地将字典转换成NSData，

 NSUserDefaults *def = [NSUserDefaults standardUserDefaults]; [def setObject:[NSKeyedArchiver archivedDataWithRootObject:self.myDictionary] forKey:@"MyData"]; [def synchronize]; 

并从沙箱回到字典：

 NSUserDefaults *def = [NSUserDefaults standardUserDefaults]; NSData *data = [def objectForKey:@"MyData"]; NSDictionary *retrievedDictionary = [NSKeyedUnarchiver unarchiveObjectWithData:data]; self.myDictionary = [[NSDictionary alloc] initWithDictionary:retrievedDictionary]; 

希望这有助于某人。 ：d

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其他注意事项：如果您正在获取可变字典或可变数组，请记得使用“mutableCopy”方法。 否则，您不能添加或删除检索到的字典/数组中的对象。 例如：

 NSMutableDictionary *retrievedDictionary = [[NSKeyedUnarchiver unarchiveObjectWithData:data] mutableCopy]; 

要么

 NSMutableArray *retrievedArray = [[NSKeyedUnarchiver unarchiveObjectWithData:data] mutableCopy]; 

Answer 2

您只能在NSUserDefaults中存储属性列表types（数组，数据，string，数字，date，字典）或URL。 您需要将您的模型对象转换为这些对象。