SKPaymentQueue addTransactionObserver在Amazons TransferManager和BFTask之后添加时会发出问题

Question

我在做应用程序采购时，很像的例子。这包括我首先从服务器获取我的产品信息。在我的例子中，我使用。

我遇到的问题是[[SKPaymentQueue defaultQueue] addTransactionObserver:self];没有工作，这意味着- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions没有被调用。

[[SKPaymentQueue defaultQueue] addTransactionObserver:self];在_productIDCompletionHandler块中被调用。

我已经将其缩小到以下代码。只要我在[[SKPaymentQueue defaultQueue] addTransactionObserver:self];之前调用continueWithExecutor，观察者就能工作。如果我在addTransactionObserver块内或之后调用BFTask，则不会调用updatedTransactions方法。

-(void)getProductidsWithCompletionHandler:(AWSAccessProductIDsCompletionHandler)completionHandler {

_productIDCompletionHandler = [completionHandler copy];

AWSS3TransferManager *transferManager = [AWSS3TransferManager defaultS3TransferManager];

// Construct the NSURL for the download location.
NSString *downloadingFilePath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"aws_downloadedproductidfile"];
NSURL *downloadingFileURL = [NSURL fileURLWithPath:downloadingFilePath];

// Construct the download request.
AWSS3TransferManagerDownloadRequest *downloadRequest = [AWSS3TransferManagerDownloadRequest new];

downloadRequest.bucket = [self bucketStringForType:WB_com_test];
downloadRequest.key = [NSString stringWithFormat:@"%@%@",COM_PRODUCTIDS_FILEPATH,COM_PRODUCTIDS_FILENAME];
downloadRequest.downloadingFileURL = downloadingFileURL;

[[transferManager download:downloadRequest] continueWithExecutor:[BFExecutor mainThreadExecutor]
                                                       withBlock:^id(BFTask *task) {
                                                           if (task.error){
                                                               NSLog(@"Error: %@", task.error);
                                                               _productIDCompletionHandler(NO,nil);
                                                               _productIDCompletionHandler = nil;
                                                           }

                                                           if (task.result) {
                                                               NSLog(@"Success: ");

                                                               AWSS3TransferManagerDownloadOutput *output = task.result;
                                                               NSURL *url = (NSURL *)output.body;
                                                               NSArray *products = [NSArray arrayWithContentsOfURL:url];
                                                               DDLogVerbose(@"Success Result Count: %lu", (unsigned long)[products count]);

                                                               if (products)
                                                               {
                                                                   _productIDCompletionHandler( YES, products);
                                                               } else
                                                               {
                                                                   _productIDCompletionHandler( NO, nil);
                                                               }
                                                               _productIDCompletionHandler = nil;
                                                           }
                                                           return nil;
                                                       }];

}

当上面的_productIDCompletionHandler处理程序返回时，它位于主线程上，所以这不是问题，但是线程不知何故是“脏的”。

编辑更多信息添加了

我的应用程序内购买类调用我的AWS类来获得一个包含我所有产品的文件。我需要建立我的产品清单从什么是存储在AWS之前，我让苹果观察员开始。奇怪的是，正如我前面指出的，如果我在调用getProductidsWithCompletionHandler之前设置了观察者，那么它就能工作。在目前的情况下，什么都不会发生。

if (!awsAccess) {
awsAccess = [AWSAccess new];
}

[awsAccess getProductidsWithCompletionHandler:^(BOOL success, NSArray *awsProductIDs) {

if (success)
{
    DDLogVerbose(@"Got ProductIDs from AWS...");
    for (NSDictionary *productInfoDict in awsProductIDs)
    {
        IAPProductInfo *info =[[IAPProductInfo alloc] initFromDict:productInfoDict];
        [self addInfo:info forProductIdentifier:info.productIdentifier];
    }

    DDLogVerbose(@"Adding the Apple transaction observer in case there are old purchases.");
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];


} else {
    DDLogVerbose(@"Error getting ProductIDs from AWS...");

}
}];

当用户通过应用程序启动购买时，应用程序中的购买类(包含上述代码和观察者)和观察者被调用，但是始终只有一个观察者，因为我在应用程序中的购买类是单例的。

基于注释的更新2

H实现SKPaymentTransactionObserver委托。我已经创建了一个只有3个函数的新测试类。这个类只在应用程序委托中使用。

我已经在我尝试过观察员的地方发表了评论，无论它是否有效。

我查过“自我”，这不是零。我还检查了主1号线程上是否调用了观察者，这就是AWS代码中的BFExecutor。

#import "TestIAPurchase.h"
#import "AWSAccess.h"

@implementation TestIAPurchase


-(void)checkForFailedPurchases {
DDLogVerbose(@"checking for failed purchases by getting all products and waiting to see if Apple replies.");

//Tried it here and it works immediately
//[[SKPaymentQueue defaultQueue] addTransactionObserver:self];

[self loadProductsWithCompletionHandler:^(BOOL success, NSError *error) {
    DDLogVerbose(@"checking for failed purchases Request for products has returned from AWS...");

    if (!success) {
        DDLogVerbose(@"checking for failed purchases Request For Products Failed");

    } else
    {
        DDLogVerbose(@"checking for failed purchases Request For Products was a success...");
        //Tried it here and it does not work if I go and get the AWS information
        //[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    }
}];

}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
 DDLogVerbose(@"paymentQueue - updatedTransaction...");
for (SKPaymentTransaction * transaction in transactions) {
    switch (transaction.transactionState)
    {
        case SKPaymentTransactionStatePurchased:
            DDLogVerbose(@"SKPaymentTransactionStatePurchased");
            break;
        case SKPaymentTransactionStateFailed:
            DDLogVerbose(@"SKPaymentTransactionStateFailed");
            break;
        case SKPaymentTransactionStateRestored:
            DDLogVerbose(@"SKPaymentTransactionStateRestored");
            break;
        case SKPaymentTransactionStateDeferred:
            DDLogVerbose(@"SKPaymentTransactionStateDeferred");
            break;

        case SKPaymentTransactionStatePurchasing:
            DDLogVerbose(@"SKPaymentTransactionStatePurchasing");
            break;

        default:
            break;
    }
};

}


- (void)loadProductsWithCompletionHandler:(void (^)(BOOL success, NSError * error))productCompletionHandler
{
 DDLogVerbose(@"loadProductsWithCompletionHandler - by getting them from AWS.");


AWSAccess * awsAccess = [AWSAccess new];

//Tried it here and it works immediately
//[[SKPaymentQueue defaultQueue] addTransactionObserver:self];

[awsAccess getProductidsWithCompletionHandler:^(BOOL success, NSArray *awsProductIDs) {


    if (success)
    {
        DDLogVerbose(@"Adding the Apple transaction observer in case there are old purchases.");
        //Trying it here and it does not work
        //[[SKPaymentQueue defaultQueue] addTransactionObserver:self];

        if (productCompletionHandler) {
            productCompletionHandler(TRUE, nil);
        }

    } else {
        DDLogVerbose(@"Error getting ProductIDs from AWS...");
        if (productCompletionHandler) {
            productCompletionHandler(FALSE, nil);
        }
    }
 }];
}
@end

Answer 1

看来我发现了问题。这与AWS无关，只是碰巧AWS与我的测试有关。

基本上，当我在应用程序委托中使用上面的代码时，Facebook的代码也是在[FBSDKAppEvents activateApp];的应用委托中启动的。Facebook也会听取同一个观察者的意见。如果我使用AWS代码，Facebook就有足够的时间成为观察者，并收到苹果的回复。然后，我也注册为一个观察员，没有得到苹果的回应，我认为是因为苹果只是发送了一个。