Question

这是崩溃的功能。确切的代码行是：removeObjectForKey。即使测试函数完全为空，它也会在removeObjectForKey上崩溃。注意：我只是传入一个空函数回调。目前，我已关闭ARC，是否需要打开它？如果可能的话，我想用ARC关闭它，因为打开它意味着处理很多编译问题。

该函数确实说明了非保留对象，因此可能是内存问题。

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

    // So we got some receipt data. Now does it all check out?
    BOOL isOk = [self doesTransactionInfoMatchReceipt:responseString];

    VerifyCompletionHandler completionHandler = _completionHandlers[[NSValue valueWithNonretainedObject:connection]];
    [_completionHandlers removeObjectForKey:[NSValue valueWithNonretainedObject:connection]];

    if (isOk)
    {
        //Validation suceeded. Unlock content here.
        NSLog(@"Validation successful");
        completionHandler(TRUE);

    } else {
        NSLog(@"Validation failed");
        completionHandler(FALSE);
    }
}

这是verifyController的用法：

    [[VerificationController sharedInstance] verifyPurchase:transaction completionHandler:^(BOOL success) {
        if (success) {

            NSLog(@"Hi, its success.");
            [self testMethod];

       } else {
            NSLog(@"payment not authorized.");
        }
    }];         
}

- (void) testMethod {

}

我可以使用__weak然后我必须打开ARC，我试图避免。注意：当我将它放在其他类/对象中时，verificaitionController会工作，但是只要我把它放在InAppPurchaseManager中，它就会在它尝试访问self时随时爆炸。 Self指向像这样定义的InAppPurchaseManager实例（它是一个phonegap插件）：

@interface InAppPurchaseManager : CDVPlugin <SKPaymentTransactionObserver> {

}

Answer 1

我也遇到了这个问题我用这种方式解决了这个问题主要问题是当你在verifyPurchase方法中设置值为完成处理程序时，它设置为nil值，所以在verifyPurchase方法中找到这一行

  _completionHandlers[[NSValue valueWithNonretainedObject:conn]] = completionHandler;

并将其替换为

 [_completionHandlers setObject:[completionHandler copy] forKey:[NSValue valueWithNonretainedObject:conn]];

找到connectionDidReceivedata方法并将其替换为

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    NSString *responseString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

    // So we got some receipt data. Now does it all check out?
    BOOL isOk = [self doesTransactionInfoMatchReceipt:responseString];


    if (_completionHandlers && [_completionHandlers respondsToSelector:@selector(removeObjectForKey:)])
    {
        VerifyCompletionHandler completionHandler = _completionHandlers[[NSValue valueWithNonretainedObject:connection]];
        [_completionHandlers removeObjectForKey:[NSValue valueWithNonretainedObject:connection]];
        if (isOk)
        {
            //Validation suceeded. Unlock content here.
            NSLog(@"Validation successful");
            completionHandler(TRUE);

        } else {
            NSLog(@"Validation failed");
            completionHandler(FALSE);
        }

    }
    //[_completionHandlers removeObjectForKey:[NSValue valueWithNonretainedObject:connection]];
   }

希望这可以帮助你并节省大量时间。

Answer 2

_completionHandlers是否为零？你可能会做这样的事情 -

if (_completionHandlers && [_completionHandlers respondsToSelector:@selector(removeObjectForKey:)]) {
    [_completionHandlers removeObjectForKey:[NSValue valueWithNonretainedObject:connection]];
}

祝你好运。

Answer 3

查找以下字符串：

[_completionHandlers setObject:completionHandler forKey:[NSValue valueWithNonretainedObject:conn]];

改为：

[_completionHandlers setObject:[completionHandler copy] forKey:[NSValue valueWithNonretainedObject:conn]];

Answer 4

我不知道你是否找到了答案，但我刚刚意识到_completionHandlers永远不会被分配（如果你在设置断点后设置了_completionHandlers，你会发现它是零）。希望这有帮助！

// in VerificationController.m

- (id)init
{
    self = [super init];
    if (self != nil)
    {
        transactionsReceiptStorageDictionary = [NSMutableDictionary dictionary];
        _completionHandlers = [NSMutableDictionary dictionary];
    }
    return self;
}

为什么VerificationController在didReceiveData中崩溃

4 个答案: