我想在我的ios应用程序中实现应用程序内购买，我有升级按钮，当用户单击升级时，我使用SKPayment SKProductsRequest发送产品请求，并添加其委托(delegate)方法， 代码如下所示，每当我单击升级按钮时，2-3秒后，它会给我错误“执行错误访问”。它仅在 sendRequest 方法中给出错误。请给我解决方案。
-(void)sendRequest
{
if ([SKPaymentQueue canMakePayments])
{
SKProductsRequest *request = [[SKProductsRequest alloc] initWithProductIdentifiers:[NSSet setWithObject:@"thisIsMyProdID"]];
request.delegate = self;
[request start];
}
}
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction *transaction in transactions)
{
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchasing:
NSLog(@"Processing...");
break;
case SKPaymentTransactionStatePurchased:
{
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
//statusLabel.text = @"Done!";
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:@"Complete"
message:@"You have unlocked Feature 2!"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Ok", nil];
[tmp show];
}
break;
case SKPaymentTransactionStateRestored:
{
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
// remove wait view here
}
break;
case SKPaymentTransactionStateFailed:
{
if (transaction.error.code != SKErrorPaymentCancelled) {
NSLog(@"Error payment cancelled");
}
[[SKPaymentQueue defaultQueue] finishTransaction:transaction];
// remove wait view here
}
break;
default:
break;
}
}
}
-(void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response
{
NSArray *products = response.products;
if (products.count != 0)
{
product = products[0];
SKPayment *payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
else
{
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:@"Not Available"
message:@"No products to purchase"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:@"Ok", nil];
[tmp show];
}
}
最佳答案
问题出在我的代码中，我没有处理 SKPayment 的对象，因此在得到苹果的响应之前，我的 SKPayment 对象被释放，所以我得到了错误的访问错误，我全局声明了该对象，然后它工作正常。这只是我的愚蠢错误，对此感到抱歉。
关于xcode - 在 ios 中的应用程序购买中，EXC_BAD_ACCESS，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14601977/