کار با پرداخت درون برنامه‌ای - Android

// Extending android application to initialize backtory
public class MainApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        // Initializing backtory
        BacktoryClient.init(KeyConfiguration.newBuilder().
            setAuthKeys("<X-Backtory-Authentication-Id>",
                        "<X-Backtory-Authentication-Key (Client)>").
            // Enabling Game Center
            setGameKey("<X-Backtory-Game-Id>").
            // Finalizing sdk
            build(), this);
    }
}

public class MyActivity extends Activity implements BacktoryIapListener {

    private BacktoryIap backtoryIap;

    public void init() {
        backtoryIap = new BacktoryIap(this, "<CafeBazaar-RSA-Key>", this);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        backtoryIap.handleActivityResult(requestCode, resultCode, data);
    }

    @Override
    protected void onDestroy() {
        if (backtoryIap != null)
            backtoryIap.dispose();
        super.onDestroy();
    }

    @Override
    public void onGetSkuDetailsFinished(IapResult result, ArrayList<SkuDetails> skuDetailsList) {

    }

    @Override
    public void onGetPurchasesFinished(IapResult result, ArrayList<String> ownedSkus, String continuationToken) {

    }

    @Override
    public void onPurchaseFinished(IapResult result, Purchase purchase, String webhookMessage) {

    }

    @Override
    public void onConsumptionFinished(IapResult result, String sku, String purchaseToken, String webhookMessage) {

    }

    @Override
    public void onSubscriptionFinished(IapResult result, Purchase purchase, String webhookMessage) {

    }
}

ArrayList<String> skuList = new ArrayList<>();
skuList.add("gas");         // 1st sku to get details about
skuList.add("premium");     // 2nd sku
backtoryIap.getSkuDetailsInBackground(skuList);

  @Override
  public void onGetSkuDetailsFinished(IapResult result, ArrayList<SkuDetails> skuDetailsList) {
    Log.d("TAG", "getSkuDetails finished.");
    Log.d("TAG", "request code: " + result.getRequestCode());   // It is always -1,
                                                    // which means NO request code!
    Log.d("TAG", "result code: " + result.getResultCode()
        + " and message: " + result.getMessage());              // All result codes are
                                                      // found in IapResult source code.
    if (result.getResultCode() == IapResult.SUCCESS) {
      for(SkuDetails sd : skuDetailsList) {
        Log.d("TAG", "productId: " + sd.getProductId() + ", price: " + sd.getPrice());
      }
    } else {
         // Failed for some reason.
         // `skuDetailsList` would be null.
    }
}

backtoryIap.getPurchases(BacktoryIap.ITEM_TYPE_INAPP, null);    // Purchased products
// Or
backtoryIap.getPurchases(BacktoryIap.ITEM_TYPE_SUBSCRIPTION, null); // Subscribed products

  @Override
  public void onGetPurchasesFinished(IapResult result, ArrayList<String> ownedSkus, String continuationToken) {
    Log.d("TAG", "getPurchases finished.");
    Log.d("TAG", "request code: " + result.getRequestCode());   // It is always -1,
                                                    // which means NO request code!
    Log.d("TAG", "result code: " + result.getResultCode()
        + " and message: " + result.getMessage());              // All result codes are
                                                      // found in IapResult source code.
    if (result.getResultCode() == IapResult.SUCCESS) {
      Log.d("TAG", "Owned product-ids are:");
      for(String os : ownedSkus) {
        Log.d("TAG", os);
      }

      if (continuationToken != null) {
        // call getPurchases again,
        // and pass in the token to retrieve more items
      }
    } else {
         // Failed for some reason.
         // `ownedSkus` and `continuationToken` would be null.
    }

  }

backtoryIap.insecurePurchase(this, "gas", "<Developer-Payload>");

backtoryIap.securePurchase(this, "gas", "<Developer-Payload>", "<webhook-metaData>");

  @Override
  public void onPurchaseFinished(IapResult result, Purchase purchase, String webhookMessage) {
    Log.d("TAG", "Purchase finished.");
    Log.d("TAG", "request code: " + result.getRequestCode());   // 5001 for secure,
                                                                // 6001 for insecure
    Log.d("TAG", "result code: " + result.getResultCode()
        + " and message: " + result.getMessage());              // All result codes are
                                                      // found in IapResult source code.
    if (result.getResultCode() == IapResult.SUCCESS) {
      Log.d("TAG", purchase.toJSONObject().toString());
      Log.d("TAG", "webhook response: " + webhookMessage);
    } else if (result.getResultCode() == IapResult.NOT_VERIFIED) {
      Log.d("TAG", "Oh, no! A purchase forgery has been occurred.\n" +
              "You can perform appropriate actions due to this immorality.\n" +
              "For example, ban the user for some days, etc.");
    } else if (result.getResultCode() == IapResult.VERIFICATION_ERROR) {
      Log.d("TAG", "Some server error. :(\n" +
              "You'd better trust the purchase " +
              "to avoid potential customers dissatisfaction.");
    } else {
      // Failed for some reason.
      // `purchase` and `webhookMessage` would be null.
    }
  }

  @Override
  public void onPurchaseFinished(IapResult result, Purchase purchase, String webhookMessage) {

    // If you want to consume this purchase,
    // the following code will help.
    if (result.getResultCode() == IapResult.SUCCESS) {
      String sku = purchase.getProductId();
      String purchaseToken = purchase.getPurchaseToken();
      backtoryIap.insecureConsume(sku, purchaseToken);
      // Or
      backtoryIap.secureConsume(sku, purchaseToken, "<webhook-metaData>");
    }
  }

  @Override
  public void onConsumptionFinished(IapResult result,
        String sku, String purchaseToken, String webhookMessage) {
    Log.d("TAG", "Consumption finished.");
    Log.d("TAG", "request code: " + result.getRequestCode());   // 5002 for secure,
                                                                // 6002 for insecure
    Log.d("TAG", "result code: " + result.getResultCode()
        + " and message: " + result.getMessage());              // All result codes are
                                                      // found in IapResult source code.
    if (result.getResultCode() == IapResult.SUCCESS) {
      Log.d("TAG", "sku: " + sku + ", token: " + purchaseToken);
      Log.d("TAG", "webhook response: " + webhookMessage);
    } else if (result.getResultCode() == IapResult.NOT_VERIFIED) {
      Log.d("TAG", "Oh, no! A consume forgery has been occurred.\n" +
              "You can perform appropriate actions due to this immorality.\n" +
              "For example, ban the user for some days, etc.");
    } else if (result.getResultCode() == IapResult.VERIFICATION_ERROR) {
      Log.d("TAG", "Some server error. :(\n" +
              "You'd better trust the consumption " +
              "to avoid potential customers dissatisfaction.");
    } else {
      // Failed for some reason.
      // `sku`, `purchaseToken` and `webhookMessage` would be null.
    }
  }

backtoryIap.insecureSubscribe(this, "infinite_gas", "<Developer-Payload>");
backtoryIap.secureSubscribe(this, "infinite_gas", "<Developer-Payload>", "<webhook-metaData>");

  @Override
  public void onSubscriptionFinished(IapResult result, Purchase purchase, String webhookMessage) {
    Log.d("TAG", "Subscription finished.");
    Log.d("TAG", "request code: " + result.getRequestCode());   // 5003 for secure,
                                                                // 6003 for insecure
    Log.d("TAG", "result code: " + result.getResultCode()
            + " and message: " + result.getMessage());          // All result codes are
                                                      // found in IapResult source code.
    if (result.getResultCode() == IapResult.SUCCESS) {
      Log.d("TAG", purchase.toJSONObject().toString());
      Log.d("TAG", "webhook response: " + webhookMessage);
    } else if (result.getResultCode() == IapResult.NOT_VERIFIED) {
      Log.d("TAG", "Oh, no! A subscribe forgery has been occurred.\n" +
              "You can perform appropriate actions due to this immorality.\n" +
              "For example, ban the user for some days, etc.");
    } else if (result.getResultCode() == IapResult.VERIFICATION_ERROR) {
      Log.d("TAG", "Some server error. :(\n" +
              "You'd better trust the purchase " +
              "to avoid potential customers dissatisfaction.");
    } else {
      // Failed for some reason.
      // `purchase` and `webhookMessage` would be null.
    }
  }

Log.d("TAG", "request codes:\n" +
        BacktoryIap.SECURE_PURCHASE_REQUEST_CODE + "\n" +   // 5001
        BacktoryIap.SECURE_CONSUME_REQUEST_CODE + "\n" +    // 5002
        BacktoryIap.SECURE_SUBSCRIBE_REQUEST_CODE + "\n" +  // 5003
        BacktoryIap.INSECURE_PURCHASE_REQUEST_CODE + "\n" + // 6001
        BacktoryIap.INSECURE_CONSUME_REQUEST_CODE + "\n" +  // 6002
        BacktoryIap.INSECURE_SUBSCRIBE_REQUEST_CODE);       // 6003

// Edit a request code
BacktoryIap.SECURE_PURCHASE_REQUEST_CODE = 7001;