arc4random（）停止更新项目工作后，线程1：EXC_ARITHMETIC

我上的Xcode 6.0.1，我需要更新我的项目一个警告，所以我也...arc4random（）停止更新项目工作后，线程1：EXC_ARITHMETIC

...但后来我与arc4random（）％的问题，而不是

一切都被此更新之前工作正常，但现在我得到以下信息： “主题1：EXC_ARITHMETIC（代码= EXC_1386_DIV，子码=为0x0）和游戏崩溃

我用arc4random_uniform尝试过，但游戏似乎“停顿”，没有任何反应。我的意思是我可以看到它进入了我f（bType == pt || bType == pl）语句，但似乎“暂停”并无休止地循环。

有什么建议吗？

-(void)placeInGrid:(CGPoint)place pt:(int)pt pl:(int)pl amount:(int)amountOfbricks{ 

CCLOG(@"BRICKS:placeInGrid"); 
//CCLOG(@"pt %d", pt); 
//CCLOG(@"pl %d", pl); 

int bType = arc4random() % amountOfbricks; 

//int bType = arc4random_uniform(amountOfbricks); 

if(bType == pt || bType == pl){ 
    CCLOG(@"bType == pt || bType == pl"); 
    [self placeInGrid:place pt:pt pl:pl amount:amountOfbricks]; 
    return; 
} 
else{ 
    CCLOG(@"else"); 
    CCSpriteBatchNode * b = (CCSpriteBatchNode *)[theGame getChildByTag:kSSheet]; 

    mySprite = [CCSprite spriteWithBatchNode:b rect:[self setBrickType:bType]]; 

    [b addChild:mySprite z:1]; 

    self.bricksType =bType; 
    [self.mySprite setPosition:place]; 

}

}

UPDATE：

中的if-else下面的语句查找在游戏开始时保存的数据，看是否it's保存的游戏或新游戏。

问题看起来，在项目更新之后，游戏认为已经存储了数据，并且它会转到第一个if语句（if（gameData）），导致amountofbricks等于0，而不是进入else语句，其中amountofbricks等于4.

我不知道如何解决此问题。

if ([[GameManager sharedGameManager] isContinuePressed] == NO && [[GameManager sharedGameManager] isNewPressed] == YES) { 

     if(gameData){ 
      CCLOG(@"gameData && isContinuePressed == NO && isNewPressed == YES"); 
      //Set the local instance of myobject to the object held in the gameState filler with the key "myObject" 
      level = 1; 
      [[GameManager sharedGameManager] setHScore:[decoder decodeIntegerForKey:@"HighScore"]]; 
      highscore = [[GameManager sharedGameManager] ReturnHScore]; 
      countTime = 300; 
      AmountOfBricks = [[GameManager sharedGameManager] ReturnAmountOfBricks]; 
      BeginningOfGame = YES; 
      CCLOG(@"AmountOfBricks %d", AmountOfBricks); 
     } 
     else{ 
      CCLOG(@"!gameData && isContinuePressed == NO && isNewPressed == YES"); 

      if([[GameManager sharedGameManager]isThereASavedGame] ==YES){ 
       CCLOG(@"isThereASavedGame == YES"); 
       score = 0; 
       highscore = [[GameManager sharedGameManager] ReturnHScore]; 
       level = 1; 
       countTime = 300; 
       AmountOfBricks = 4; 
       BeginningOfGame = YES; 
       CCLOG(@"AmountOfBricks %d", AmountOfBricks); 
      } 
      else{ 
       CCLOG(@"isThereASavedGame == NO"); 
       score = 0; 
       highscore = 0; 
       level = 1; 
       countTime = 300; 
       AmountOfBricks = 4; 
       BeginningOfGame = YES; 
       CCLOG(@"AmountOfBricks %d", AmountOfBricks); 
      } 
     } 
    }

更新：我发现这个问题。

问题出在我的游戏manager.m文件中。

NSMutableData * gameData; NSKeyedUnarchiver * decoder = nil;

NSString *documentPath = [documentsDirectory stringByAppendingPathComponent: @"gameState.dat"]; 
    gameData = [NSData dataWithContentsOfFile:documentPath];//before the update, I as using this line. was working perfectly. after the update I got a warning on this line "incompatible pointer" and xcode recommended to update to the line below but the line below started to return a zero value. which caused the game to crash. 

    //gameData = [NSMutableData dataWithData:[NSData dataWithContentsOfFile:documentPath]];

来源

2014-10-04 Chris79

我敢打赌amountOfBricks为0，可以不被0模就像你不能用0

来源

2014-10-04 07:49:15 LearnCocos2D

把它不容为零。在第一值为4。就像我说的，它给了价值4，直到我昨天更新了项目。 – Chris79 2014-10-04 10:28:54

你是否在更新之后验证了这一点？调用代码可能会受到更新的影响，现在对于amountOfBricks调用此方法的值为0。或者错误不在该代码中，请尝试添加异常断点以准确查看错误所在的行。 EXC_ARITHMETIC和EXC_1386_DIV明确指出了一个除零误差的情况。 – LearnCocos2D 2014-10-04 11:29:37

@ Chris79无论如何，你应该防止amountOfBricks为0.还要检查你是否正在构建新的体系结构，潜在的潜在int，long，long long，unsigned等等...... – YvesLeBorg 2014-10-04 11:35:31

arc4random（）停止更新项目工作后，线程1：EXC_ARITHMETIC

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