ios - iOS 非消耗性应用内购买的恢复按钮

Question

很遗憾，Apple 拒绝了我的应用程序，因为它没有恢复按钮。我想为用户提供无缝体验，但存在一些问题。

- (void)purchaseProUpgrade
{ 
   [[SKPaymentQueue defaultQueue] addTransactionObserver:self];

   // User is prompted for iTunes username and password here (1)
   [[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}

// Then this delegate Function Will be fired
- (void) paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue
{
    if( queue.transactions.count == 0 ) {

        [self setUpgradeProductId];

       // User is prompted for iTunes username and password here (2)
        SKPayment *payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId];
       [[SKPaymentQueue defaultQueue] addPayment:payment];                                                                 

    }else {

      [[NSNotificationCenter defaultCenter] postNotificationName:kInAppPurchaseManagerTransactionSucceededNotification object:self userInfo:NULL];
    }
  }

以上是好的解决方案吗？逻辑是:

1. 用户按下按钮以删除应用内购买。
2. 检查用户是否已经购买(用户必须输入用户名和密码)
3. 如果用户已经购买，则恢复
4. 如果用户尚未购买，则提示付款(用户必须再次输入密码)。

这种方法的问题是:1.额外的服务器调用2. 用户必须输入两次详细信息。

有没有人实际实现了一个他们可以演示的恢复按钮？

Answer 1

无需实现自己的逻辑只需实现此

- (IBAction)restorePreviousTransaction:(id)sender {
    [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
    [[SKPaymentQueue defaultQueue] restoreCompletedTransactions];
}

这将调用此方法

 - (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
   case SKPaymentTransactionStateRestored:
                if ([self respondsToSelector:@selector(restoreTransaction:)]) {
                    [self restoreTransaction:transaction];
                    return;                
}

这将为交易成功或失败调用这些委托(delegate)方法

- (void)restoreTransaction:(SKPaymentTransaction *)transaction
-(void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error
-(void)paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue