Objective-C
// This method requests the tapjoy server for current virtual currency of the user.
//Get currency
[Tapjoy getCurrencyBalanceWithCompletion:^(NSDictionary *parameters, NSError *error) {
  if (error) {
    //Show error message
    NSLog(@"getCurrencyBalance error: %@", [error localizedDescription]);
  } else {
    //Update currency value of your app
    NSLog(@"getCurrencyBalance returned %@: %d", parameters[@"currencyName"], [parameters[@"amount"] intValue]);
  }
}];

Objective-C
// Set the notification observer for earned-currency-notification. It's recommended that this be placed within the applicationDidBecomeActive method.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showEarnedCurrencyAlert:) name:TJC_CURRENCY_EARNED_NOTIFICATION object:nil];

// In the following method, you can set a custom message or use the default UIAlert to inform the user that they just earned some currency.
- (void)showEarnedCurrencyAlert:(NSNotification*)notifyObj
{
  NSNumber *currencyEarned = notifyObj.object;
  int earnedNum = [currencyEarned intValue];

  NSLog(@"Currency earned: %d", earnedNum);

  // Pops up a UIAlert notifying the user that they have successfully earned some currency.
  // This is the default alert, so you may place a custom alert here if you choose to do so.
  [Tapjoy showDefaultEarnedCurrencyAlert];

  // This is a good place to remove this notification since it is undesirable to have a pop-up alert more than once per app run.
  [[NSNotificationCenter defaultCenter] removeObserver:self name:TJC_CURRENCY_EARNED_NOTIFICATION object:nil];
}

Objective-C
// This method call will deduct 10 virtual currencies from the user's total.
[Tapjoy spendCurrency:10 completion:^(NSDictionary *parameters, NSError *error) {
  if (error) {
    NSLog(@"spendCurrency error: %@", [error localizedDescription]);
  } else {
    NSLog(@"spendCurrency returned %@: %d", parameters[@"currencyName"], [parameters[@"amount"] intValue])
  }
}];

Objective-C
// This method call will award 10 virtual currencies to the user's total.
[Tapjoy awardCurrency:10 completion:^(NSDictionary *parameters, NSError *error) {
  if (error) {
    NSLog(@"awardCurrency error: %@", [error localizedDescription]);
  } else {
    NSLog(@"awardCurrency returned %@: %d", parameters[@"currencyName"], [parameters[@"amount"] intValue])
  }
}];