question

That is apart from doing if (agsClient ! = null)

Hi Abhimir, Please make sure that you receive a callback to onServiceReady() of AmazonGamesCallback after calling AmazonGamesClient.initialize() before making any further call to leader board apis. In your onCreate method, you should be doing the initialization work. You should call a method along these lines: private void initializeAmazonGameCircle() { agsCallback = new AmazonGamesCallback() { public void onServiceReady(AmazonGamesClient client) { agsClient = client; gameCircleAvailable = true; startingLevel = retrieveHighestLevelAttained(); gameController.getGameStateListener().onGameInitialized(); } public void onServiceNotReady(AmazonGamesStatus reason) { switch (reason) { // The SDK failed to initialize correctly. case CANNOT_INITIALIZE: break; // The SDK is in the process of initializing. case INITIALIZING: break; // The device not registered with an account case NOT_AUTHENTICATED: break; // The game is not authorized to use this service. case NOT_AUTHORIZED: break; } gameCircleAvailable = false; } }; } Message was edited by: Sujoy@Amazon