我正在使用 RMStore 来验证收据。请注意，我没有将 RMStore 用于实际购买部分。如果收据无效，该过程成功地处理了抛出错误和不交付内容方面的成功和失败。我故意更改捆绑包以强制失败作为测试。不过，我的问题是失败过程和 Apple 发送的确认信息。
问题是，虽然这个过程确实检测到验证失败，因此确实阻止了内容被发送给用户，但苹果仍然会在之后返回一个关于购买成功的对话框。好消息是购买不成功且内容未交付，但我希望 Apple 的这个对话框不要显示，因为它会造成混乱。
这是我的检查实现。现在我只是在失败块内做更多事情之前测试失败场景。
- (void)completeTransaction:(SKPaymentTransaction *)transaction {
NSLog(@"completeTransaction...");
RMStoreAppReceiptVerificator *verifyReceipt = [[RMStoreAppReceiptVerificator alloc]init];
[verifyReceipt verifyTransaction:transaction success:^{
[self provideContentForProductIdentifier:transaction.payment.productIdentifier];
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
}failure:^(NSError *error){
NSLog(@"failure to verify: %@",error.description);
}];
}
在失败块中是否有办法停止 Apple 创建成功对话框的过程，还是我需要在早期阶段执行此检查？
更新：
进一步看，上面的方法是由 state 调用的SKPaymentTransactionStatePurchased。每个 Apple 对该 state 的定义是：
“App Store 已成功处理付款。您的应用程序应提供用户购买的内容。”
这告诉我阻止对话可能为时已晚。有一个更早的状态，但是，我认为收据验证必须在购买之后但在内容交付之前进行（否则将不会进行购买验证）。那么这只是必须处理相互矛盾的信息还是我错过了什么？
更新 2：在评论中为每个请求添加更多方法
@interface IAPHelper () <SKProductsRequestDelegate, SKPaymentTransactionObserver>
@end
@implementation IAPHelper
{
SKProductsRequest * _productsRequest;
RequestProductsCompletionHandler _completionHandler;
NSSet * _productIdentifiers;
NSMutableSet * _purchasedProductIdentifiers;
NSDictionary *_mappingDict;
}
- (id)initWithProductIdentifiers:(NSSet *)productIdentifiers andMappings:(NSDictionary *)mappingDict
{
if ((self = [super init])) {
// Store product identifiers & mappings
_productIdentifiers = productIdentifiers;
_mappingDict = mappingDict;
// Add self as transaction observer
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
}
return self;
}
- (void)requestProductsWithCompletionHandler:(RequestProductsCompletionHandler)completionHandler {
// 1
_completionHandler = [completionHandler copy];
// 2
_productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:_productIdentifiers];
_productsRequest.delegate = self;
[_productsRequest start];
}
- (BOOL)productPurchased:(NSString *)productIdentifier {
return [_purchasedProductIdentifiers containsObject:productIdentifier];
}
- (void)buyProduct:(SKProduct *)product {
NSLog(@"Buying %@...", product.productIdentifier);
SKPayment * payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
#pragma mark - SKProductsRequestDelegate
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response {
NSLog(@"Loaded list of products...");
_productsRequest = nil;
NSArray * skProducts = response.products;
for (SKProduct * skProduct in skProducts) {
NSLog(@"Found product: %@ %@ %0.2f",
skProduct.productIdentifier,
skProduct.localizedTitle,
skProduct.price.floatValue);
}
if (_completionHandler)
{
_completionHandler(YES, skProducts);
_completionHandler = nil;
}
}
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error {
NSLog(@"Failed to load list of products.");
_productsRequest = nil;
if (_completionHandler)
{
_completionHandler(NO, nil);
_completionHandler = nil;
}
}
这是调用的具体方法completeTransaction
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction * transaction in transactions) {
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchased:
[self completeTransaction:transaction];
break;
case SKPaymentTransactionStateFailed:
[self failedTransaction:transaction];
break;
case SKPaymentTransactionStateRestored:
[self restoreTransaction:transaction];
default:
break;
}
};
}