在NSDictionary中的NSArray存儲在NSUserDefaults

Question

我只是試圖保存NSUserdefaults中的數組字典字典沒有成功。這裏是我的代碼：

+ (BOOL) userHasAlreadyLoad:(NSNumber *)territoryId year:(NSInteger)year month:(NSInteger)month 
{ 
    NSMutableDictionary *dict = [[NSUserDefaults standardUserDefaults] objectForKey:USER_SETTING_MONTHS_LOADED]; 
    NSMutableDictionary *dictOfTerritory = dict[[territoryId stringValue]]; 
    if (dictOfTerritory == nil) 
     return NO; 

    NSMutableArray *yearData = dictOfTerritory[[@(year) stringValue]]; 
    if (yearData == nil) 
     return NO; 

    if ([yearData containsObject:@(month)]) 
     return YES; 
    return NO; 
} 

+ (void) setUserLoad:(NSNumber *)territoryId year:(NSInteger)year month:(NSInteger)month 
{ 
    NSMutableDictionary *dict = [[[NSUserDefaults standardUserDefaults] objectForKey:USER_SETTING_MONTHS_LOADED] mutableCopy]; 
    NSMutableDictionary *dictOfTerritory = [dict[[territoryId stringValue]] mutableCopy]; 
    if (dictOfTerritory == nil) 
    { 
     dictOfTerritory = [NSMutableDictionary dictionary]; 
     dict[[territoryId stringValue]] = dictOfTerritory; 
    } 
    NSMutableArray *yearData = [dictOfTerritory[[@(year) stringValue]] mutableCopy]; 
    if (yearData == nil) 
    { 
     yearData = [NSMutableArray array]; 
    } 
    if (![yearData containsObject:@(month)]) 
    { 
     [yearData addObject:@(month)]; 
    } 
    dictOfTerritory[[@(year) stringValue]] = yearData; 
    [[NSUserDefaults standardUserDefaults] setObject:dict forKey:USER_SETTING_MONTHS_LOADED]; 
    [[NSUserDefaults standardUserDefaults] synchronize]; 
} 

當我運行應用程序第一次，這樣可以節省正確的數據，這意味着yearData將包含一個一個月，但增加更多的數據，該數組後打電話時，我無法找到他們userHasAlreadyLoad;我只能看到一個月的相同的領土編號和年份，這是我添加的第一個月。我在這裏錯過了什麼？

Answer 1

當你得到dictOfTerritory，你可以打電話給mutableCopy，它會給你一個該字典的副本。而且，您只能將該值複製到該複製的字典中，而不是主dict字典中引用的字典。

請嘗試以下代碼保存字典。

dictOfTerritory[[@(year) stringValue]] = yearData; 
[dict setObject:dictOfTerritory forKey:[territoryId stringValue]]; 
    [[NSUserDefaults standardUserDefaults] setObject:dict forKey:USER_SETTING_MONTHS_LOADED];