原文链接：http://hillboy.blog.51cto.com/1645730/946243
最近的一个应用被拒了，苹果解释如下：
Jul 25, 2012 12:52 PM. From Apple. We found that while your app offers In-App Purchase(s) that can be restored, it does not include the required "Restore" feature to allow users to restore the previously purchased In-App Purchase(s), as specified in Restoring Transactions section of the In-App Purchase Programming Guide: "...if your application supports product types that must be restorable, you must include an interface that allows users to restore these purchases. This interface allows a user to add the product to other devices or, if the original device was wiped, to restore the transaction on the original device." To restore previously purchased In-App Purchase products, it would be appropriate to provide a "Restore" button and initiate the restore process when the "Restore" button is tapped by the user. For more information about restoring transactions and verifying store receipt, please refer to the In-App Purchase Programming Guide.
大体意思就是应用需要一个购买恢复的功能，第一次做的IAP并没有做这个功能，但也通过了，可能是苹果新增的审核规则。
解决方法很简单，增加一个Restore按钮，并调用[[SKPaymentQueue defaultQueue] restoreCompletedTransactions]，接下来的流程是
1，弹出对话框输入帐号信息
2，如果点击“取消”，调用方法
-(void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error
如果点击“确定”，开始请求数据
3,返回数据后，回调
-(void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
4,判断交易队列中交易的状态，在状态为“SKPaymentTransactionStateRestored”的switch分支下调用恢复处理方法
5,恢复完成后回调-(void)completeTransaction:(SKPaymentTransaction *)transaction