ios - MagicalRecord 无法正常运行

Question

我正在开发一款游戏，我正在使用 MagicalRecord 来存储高分。该游戏有 4 种模式和 2 种“类型”，因此有 8 种组合可供选择，我想为每一种组合打高分。我正在使用这个逻辑:

NSArray *arrayOfHighscores = [Highscores MR_findAll];
if([arrayOfHighscores count] == 0) {
    Highscores *highScores = [Highscores MR_createEntity];

    highScores.normalTapHighscore = [NSNumber numberWithInt:0];
    highScores.normalSwipeHighscore = [NSNumber numberWithInt:0];
    highScores.zenTapHighscore = [NSNumber numberWithInt:0];
    highScores.zenSwipeHighscore = [NSNumber numberWithInt:0];
    highScores.crazyTapHighscore = [NSNumber numberWithInt:0];
    highScores.crazySwipeHighscore = [NSNumber numberWithInt:0];
    highScores.endlessTapHighscore = [NSNumber numberWithInt:0];
    highScores.endlessSwipeHighscore = [NSNumber numberWithInt:0];

    [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
}
Highscores *highScores = [Highscores MR_findFirst/*:[NSManagedObjectContext MR_contextForCurrentThread]*/];

if (currentGameMode == NORMAL_GAME_MODE) {
    if (currentGameType == TAP_GAME_TYPE) {
        if (score > (int)highScores.normalTapHighscore) {
            highScore = score;
            highScores.normalTapHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.normalTapHighscore;
    } else {
        if (score > (int)highScores.normalSwipeHighscore) {
            highScore = score;
            highScores.normalSwipeHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.normalSwipeHighscore;
    }
} else if (currentGameMode == ZEN_GAME_MODE) {
    if (currentGameType == TAP_GAME_TYPE) {
        if (score > (int)highScores.zenTapHighscore) {
            highScore = score;
            highScores.zenTapHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.zenTapHighscore;
    } else {
        if (score > (int)highScores.zenSwipeHighscore) {
            highScore = score;
            highScores.zenSwipeHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.zenSwipeHighscore;
    }
} else if (currentGameMode == CRAZY_GAME_MODE) {
    if (currentGameType == TAP_GAME_TYPE) {
        if (score > (int)highScores.crazyTapHighscore) {
            highScore = score;
            [highScores setCrazyTapHighscore:[NSNumber numberWithInt:score]];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.crazyTapHighscore;
    } else {
        if (score > (int)highScores.crazySwipeHighscore) {
            highScore = score;
            [highScores setCrazySwipeHighscore:[NSNumber numberWithInt:score]];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.crazySwipeHighscore;
    }
} else if (currentGameMode == ENDLESS_GAME_MODE) {
    if (currentGameType == TAP_GAME_TYPE) {
        if (score > (int)highScores.endlessTapHighscore) {
            highScore = score;
            highScores.endlessTapHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.endlessTapHighscore;
    } else {
        if (score > (int)highScores.endlessSwipeHighscore) {
            highScore = score;
            highScores.endlessSwipeHighscore = [NSNumber numberWithInt:score];
            [[NSManagedObjectContext MR_contextForCurrentThread] MR_saveToPersistentStoreAndWait];
        } else highScore = (int)highScores.endlessSwipeHighscore;
    }
}

和 highscore变量显示在屏幕上。同样出于测试目的，我调用 MR_truncateAll在程序的开头。

这是问题所在:我第一次玩游戏时，游戏结束时显示游戏结束 View ，显示的是我当前的分数。虽然，第二次，屏幕上出现了一个 3 位数(尽管我的分数低于第一次)。我试过调试等等，似乎是第二次，highScores对象包含:data: <fault> .

我该怎么办？如果您需要更多详细信息，请告诉我。提前致谢!

Answer 1

看来您没有理解 NSNumbers 和原始整数类型之间的区别。

当您让高分(托管)对象保存所有数据时，您需要将所有内容存储在 NSNumber 中。但是你不能只是将它转换回 (int) 类型。你得到的可能是那个 NSNumber 对象的地址。相反，您应该使用 [highScores.endlessSwipeHighScore integerValue] 来获取正确的原始类型值以在您的逻辑中使用。