// 13.監(jiān)聽(tīng)購(gòu)買結(jié)果

• (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transaction{
  for(SKPaymentTransaction *tran in transaction){

    switch (tran.transactionState) {
        case SKPaymentTransactionStatePurchased:
            NSLog(@"交易完成");
            [[SKPaymentQueue defaultQueue] finishTransaction:tran];
  
            break;
        case SKPaymentTransactionStatePurchasing:
            NSLog(@"商品添加進(jìn)列表");
            break;
        case SKPaymentTransactionStateRestored:
            NSLog(@"已經(jīng)購(gòu)買過(guò)商品");
            [[SKPaymentQueue defaultQueue] finishTransaction:tran];
            break;
        case SKPaymentTransactionStateFailed:
            NSLog(@"交易失敗");
            [[SKPaymentQueue defaultQueue] finishTransaction:tran];
            break;
        default:
            break;
    }
  

  }
  }
  就是 [[SKPaymentQueue defaultQueue] finishTransaction:tran];除了 case SKPaymentTransactionStatePurchasing:
  NSLog(@"商品添加進(jìn)列表");
  break;
  這里不需要之外都要加入的。

不然在你重復(fù)購(gòu)買的時(shí)候就會(huì)提示你已經(jīng)購(gòu)買過(guò)的提示框了