NSUserDefaults與具有自定義對象數組的自定義對象

Question

我有一個對象，我使用NSKeyedArchiver轉換成NSData，然後將其存儲到NSUserDefaults中。除了對象所具有的數組元素外，所有內容都可以正確保存。陣列中的所有對象都符合NSCoder協議（或其他所謂的協議，例如self.property = [decoder decodeObjectForKey:@"key"] and [encoder encodeObjectForKey:@"key"]）

當我保存對象時，數組的元素仍保留在數組中，但它們的屬性本身並未保存。我打電話給sycnrhonize方法，所以這不是問題。

請注意，所有其他時間我保存&加載它是正確的，它只是不保存屬於一個對象的數組的元素。我必須分開保存嗎？

「當前狀態」NSNumber未被保存。目的和目標正在保存

進口「Level.h」

@implementation Level 
@synthesize objective = _objective; 
@synthesize isComplete = _isComplete; 
@synthesize goldReward = _goldReward; 
@synthesize xpReward = _xpReward; 
@synthesize missionID = _missionID; 
@synthesize currentStatus = _currentStatus; 
@synthesize targetName = _targetName; 
@synthesize owner = _owner; 

-(void)dealloc{ 

[super dealloc]; 
    } 

-(id)initWithMissionID:(int)number{ 

if (self = [super init]) { 
    self.currentStatus = 0; 
    self.isComplete = NO; 
    self.missionID = [NSNumber numberWithInt:number]; 
    [self setUpMisson]; 
} 
return self; 
} 
-(void)setUpMisson{ 
if ([self.missionID intValue] == 0) { 
    self.xpReward = [NSNumber numberWithInt:100]; 
    self.goldReward = [NSNumber numberWithInt:100]; 
    self.objective = [NSNumber numberWithInt:3]; 
    self.targetName = @"Swordsman"; 
    CCLOG(@"Gotta kill some swordsmen!"); 
} 
} 
-(void)encodeWithCoder:(NSCoder *)encoder{ 
[encoder encodeObject:self.objective forKey:@"objective"]; 
[encoder encodeObject:self.isComplete forKey:@"isComplete"]; 
[encoder encodeObject:self.goldReward forKey:@"goldReward"]; 
[encoder encodeObject:self.xpReward forKey:@"xpReward"]; 
[encoder encodeObject:self.missionID forKey:@"missionID"]; 
[encoder encodeObject:self.currentStatus forKey:@"currentStatus"]; 
[encoder encodeObject:self.targetName forKey:@"targetName"]; 
[encoder encodeObject:self.owner forKey:@"owner"]; 
CCLOG(@"SAVING LEVEL"); 
} 
-(id)initWithCoder:(NSCoder *)decoder{ 
if (self = [super init]) { 
    self.objective = [[decoder decodeObjectForKey:@"objective"]retain]; 
    self.isComplete = [[decoder decodeObjectForKey:@"isComplete"]retain]; 
    self.goldReward = [[decoder decodeObjectForKey:@"goldReward"]retain]; 
    self.xpReward = [[decoder decodeObjectForKey:@"xpReward"]retain]; 
    self.missionID = [[decoder decodeObjectForKey:@"missionID"]retain]; 
    self.targetName = [[decoder decodeObjectForKey:@"targetName"]retain]; 
    self.owner = [[decoder decodeObjectForKey:@"owner"]retain]; 
    CCLOG(@"LOADING LEVEL"); 
} 
return self; 
} 
-(void)updateStatusForKill:(AI *)killedTarget{ 
CCLOG(@"WE KILLED: %@ and OUR GOAL IS: %@",killedTarget.name,self.targetName); 

if ([killedTarget.name isEqualToString:self.targetName]) { 
    [self setCurrentStatus:[NSNumber numberWithInt:[self.currentStatus intValue]+1]]; 
    CCLOG(@"Current Status: %i Objective: %i", [self.currentStatus intValue],[self.objective intValue]); 
    if ([self.currentStatus intValue] == [self.objective intValue]) { 
     [self completeMission]; 
    } 
} 
} 
-(void)completeMission{ 
[self.owner setCoins:[NSNumber numberWithInt:[[self.owner coins]intValue] + [self.goldReward intValue]]]; 
[self.owner setXp:[NSNumber numberWithInt:[[self.owner xp]intValue] + [self.xpReward intValue]]]; 
CCLOG(@"complete"); 
[[self.owner missionList]removeObject:self]; 

} 
@end 

編輯：「所有者」指回被保存的對象。我認爲這是問題所在，所以我將它移除並再次測試。

編輯：而且什麼都沒做！

Answer 1

找到了一個解決方法，爲每個任務使用Unique-Id系統，並將每個任務的進度分別保存到NSUserDefaults中，然後再次加載。不理想，但它的工作原理。感謝大家的幫助！

Answer 2

你所描述的應該「只是工作」。在自定義對象的encodeWithCoder方法中，您只需對數組對象進行編碼，這應該會導致數組和其內容被編碼。

但是，如果數組中的任何對象不支持NSCoding，則會失敗。我的猜測是你的數組中的某些東西（或者它的子代或孫代）不支持NSCoding。

Answer 3

它看起來像你使用-encodeObject:forKey:和-decodeObjectForKey:即使在不是對象的值。例如，在你的-initWithMissionID:你有：

self.isComplete = NO; 

這讓我覺得complete是BOOL屬性，但您-encodeObject:forKey:說：

[encoder encodeObject:self.isComplete forKey:@"isComplete"]; 

我想你也許想打電話-encodeBool:forKey:代替，像這樣：

[encoder encodeBool:self.isComplete forKey:@"isComplete"]; 

另一方面，我真的希望某種警告，如果p那麼簡單。你有任何警告嗎？很難推斷出其他屬性的類型，但要查看每個屬性的相同類型的問題。

Answer 4

當試圖保存包含屬性值和另一個自定義對象的帳戶數組時，我遇到了這個問題。我無法將您的數據與您提出的解決方案保存在一起，因爲我隨意將帳戶添加到數組中，並且爲動態添加的帳戶提供唯一標識符是沒有意義的。我結束了嵌套NSCoding協議：

在我AccountManager類：

- (void) saveAllAccounts { 
    [self deleteAllAccounts]; //Just removes whatever was previously stored there 
    [[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRootObject:accountArray] forKey:saveAccountsArrayKey]; 
    [[NSUserDefaults standardUserDefaults] synchronize]; 
} 

在我Account類：

- (void) encodeWithCoder:(NSCoder *)aCoder { 
    [aCoder encodeObject:username forKey:@"username"]; 
    [aCoder encodeObject:token forKey:@"token"]; 
    [aCoder encodeObject:specialID forKey:@"special ID"]; 
    NSData *data = [NSKeyedArchiver archivedDataWithRootObject:deviceArray]; 
    [[NSUserDefaults standardUserDefaults] setObject:data forKey:@"device array"]; 
} 

- (id) initWithCoder:(NSCoder *)aDecoder { 
    self = [super init]; 
    if (self != nil) { 
     username = [[aDecoder decodeObjectForKey:@"username"] retain]; 
     token = [[aDecoder decodeObjectForKey:@"token"] retain]; 
     ecoID = [[aDecoder decodeObjectForKey:@"eco ID"] retain]; 
     NSData *deviceArrayData = [[NSUserDefaults standardUserDefaults] objectForKey:@"device array"]; 
     if (deviceArrayData != nil) { 
      NSArray *savedArray = [NSKeyedUnarchiver unarchiveObjectWithData: deviceArrayData]; 
      if (savedArray != nil) 
       deviceArray = [[NSMutableArray alloc] initWithArray:savedArray]; 
     } 
    } 
    return self; 
} 

在我AccountDevice類：

- (void) encodeWithCoder:(NSCoder *)aCoder { 
    [aCoder encodeObject:pairingPassword forKey:@"pairing password"]; 
    [aCoder encodeObject:devicePin forKey:@"device pin"]; 
} 

- (id) initWithCoder:(NSCoder *)aDecoder { 
    self = [super init]; 
    if (self != nil) { 
     password = [[aDecoder decodeObjectForKey:@"password"] retain]; 
     pin = [[aDecoder decodeObjectForKey:@"pin"] retain];   
    } 
    return self; 
} 

它可能因爲我還沒有完成對我的測試，所以是一個小車噸，但我的初步測試是成功的，我認爲這個概念就在那裏。