ios - GKScore 必须包含一个初始化值？

Question

我有时遇到 SIGABRT 崩溃，崩溃提示:GKScore 必须包含初始化值。

所以它追踪到这一行:

[localScore reportScoreWithCompletionHandler:^(NSError* error) {}];

localStore 是这样创建的:

GKScore* localScore = [scores objectForKey:category];

-- 类别来自...

for (NSString* category in categories)

-- 类别来自...

[GKLeaderboard loadCategoriesWithCompletionHandler:^(NSArray *categories, NSArray *titles, NSError *error)

---

-(void) initScores
{
    NSString* libraryPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString* file = [libraryPath stringByAppendingPathComponent:currentPlayerID];
    file = [file stringByAppendingString:kScoresFile];
    id object = [NSKeyedUnarchiver unarchiveObjectWithFile:file];

    if ([object isKindOfClass:[NSMutableDictionary class]])
    {
        NSMutableDictionary* loadedScores = (NSMutableDictionary*)object;
        scores = [[NSMutableDictionary alloc] initWithDictionary:loadedScores];
    }
    else
    {
        scores = [[NSMutableDictionary alloc] init];
    }

    //NSLog(@"scores initialized: %d", scores.count);
}

抱歉所有代码，但几乎所有这些代码都来自这个库的文件:https://github.com/csddavies/DDGameKitHelper/blob/master/DDGameKitHelper.m

无论如何，我该如何解决这个问题？

谢谢!!!

Answer 1

来自GameKit reference :

To report a score to Game Center, your game allocates and initializes a new object, sets the value property to the score the player earned, and then calls the reportScoreWithCompletionHandler: method.

很可能是因为您没有设置 value 属性，所以它在提示，但也有可能您也错过了第一步——即它不喜欢您提交 GKScore 来自排行榜的对象，而不是您自己创建的对象。