How to call the restoreCompletedTransactions

Question

i am doing one application.In that i am calling the restoreCompletedTransactions method like below.

-(void)restore
{
   [SKPaymentQueue defaultqueue] restoreCOmpletedTransactions];
 }

But it will not give any response from apple.If id like below then app is crashing when i call the restore method.

-(void)restore
  {
     [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
   [SKPaymentQueue defaultqueue] restoreCOmpletedTransactions];
 }

So how to call the restoreCompletedTransactions.And when we use this [[SKPaymentQueue defaultQueue] addTransactionObserver:self] in my code.

Answer 1

1. You need to call [[SKPaymentQueue defaultQueue] addTransactionObserver:self]; in your app delegate. It is recommended to call it in AppDidFinishLaunching .
2. Then in your restore method (Usually connected to a button) you will call - [SKPaymentQueue defaultqueue] restoreCOmpletedTransactions];
3. Do you implement the SKProductsRequestDelegate ?, what do you mean there is no response by apple ?