1. Build Integration

repositories {
    mavenCentral()
}

dependencies {
    implementation 'com.razorpay:checkout:1.6.40'
}

public class PaymentActivity extends Activity {

  // ...

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    /**
     * Preload payment resources
     */
    Checkout.preload(getApplicationContext());

    // ...

    checkout.setKeyID("<YOUR_KEY_ID>");

    // ...
  }
}

-keepclassmembers class * {
    @android.webkit.JavascriptInterface <methods>;
}

-keepattributes JavascriptInterface
-keepattributes *Annotation*

-dontwarn com.razorpay.**
-keep class com.razorpay.** {*;}

-optimizations !method/inlining/*

-keepclasseswithmembers class * {
  public void onPayment*(...);
}

curl -X POST https://api.razorpay.com/v1/orders
-U [YOUR_KEY_ID]:[YOUR_KEY_SECRET]
-H 'content-type:application/json'
-d '{
 "amount": 500,
 "currency": "INR",
 "receipt": "qwsaq1",
 "partial_payment": true,
 "first_payment_min_amount": 230,
 "notes": {
   "key1": "value3",
   "key2": "value2"
 }
}'

{
 "id": "order_IluGWxBm9U8zJ8",
 "entity": "order",
 "amount": 5000,
 "amount_paid": 0,
 "amount_due": 5000,
 "currency": "INR",
 "receipt": "rcptid_11",
 "offer_id": null,
 "status": "created",
 "attempts": 0,
 "notes": [],
 "created_at": 1642662092
}

PayloadHelper payloadHelper = new PayloadHelper("INR", 100, "order_XXXXXXXXX");
      payloadHelper.setName("Gaurav Kumar");
      payloadHelper.setDescription("Description");
      payloadHelper.setPrefillEmail("gaurav.kumar@example.com");
      payloadHelper.setPrefillContact("9000090000");
      payloadHelper.setPrefillCardNum("4111111111111111");
      payloadHelper.setPrefillCardCvv("111");
      payloadHelper.setPrefillCardExp("11/24");
      payloadHelper.setPrefillMethod("card");
      payloadHelper.setPrefillName("MerchantName");
      payloadHelper.setSendSmsHash(true);
      payloadHelper.setRetryMaxCount(4);
      payloadHelper.setRetryEnabled(true);
      payloadHelper.setColor("#000000");
      payloadHelper.setAllowRotation(true);
      payloadHelper.setRememberCustomer(true);
      payloadHelper.setTimeout(10);
      payloadHelper.setRedirect(true);
      payloadHelper.setRecurring("1");
      payloadHelper.setSubscriptionCardChange(true);
      payloadHelper.setCustomerId("cust_XXXXXXXXXX");
      payloadHelper.setCallbackUrl("https://accepts-posts.request");
      payloadHelper.setSubscriptionId("sub_XXXXXXXXXX");
      payloadHelper.setModalConfirmClose(true);
      payloadHelper.setBackDropColor("#ffffff");
      payloadHelper.setHideTopBar(true);
      payloadHelper.setNotes(new JSONObject("{\"remarks\":\"Discount to cusomter\"}"));
      payloadHelper.setReadOnlyEmail(true);
      payloadHelper.setReadOnlyContact(true);
      payloadHelper.setReadOnlyName(true);
      payloadHelper.setImage("https://www.razorpay.com");
      payloadHelper.setAmount(100);
      payloadHelper.setCurrency("INR");
      payloadHelper.setOrderId("order_XXXXXXXXXXXXXX");

public void startPayment() {
  checkout.setKeyID("<YOUR_KEY_ID>");
  /**
   * Instantiate Checkout
   */
  Checkout checkout = new Checkout();

  /**
   * Set your logo here
   */
  checkout.setImage(R.drawable.logo);

  /**
   * Reference to current activity
   */
  final Activity activity = this;

  /**
   * Pass your payment options to the Razorpay Checkout as a JSONObject
   */
  try {
      JSONObject options = new JSONObject();

      options.put("name", "Merchant Name");
      options.put("description", "Reference No. #123456");
      options.put("image", "http://example.com/image/rzp.jpg");
      options.put("order_id", "order_DBJOWzybf0sJbb");//from response of step 3.
      options.put("theme.color", "#3399cc");
      options.put("currency", "INR");
      options.put("amount", "50000");//pass amount in currency subunits
      options.put("prefill.email", "gaurav.kumar@example.com");
      options.put("prefill.contact","9988776655");
      JSONObject retryObj = new JSONObject();
      retryObj.put("enabled", true);
      retryObj.put("max_count", 4);
      options.put("retry", retryObj);

      checkout.open(activity, options);

  } catch(Exception e) {
    Log.e(TAG, "Error in starting Razorpay Checkout", e);
  }
}

import com.razorpay.PaymentResultListener

public class PaymentActivity extends Activity implements PaymentResultListener {
  // ...

  @Override
  public void onPaymentSuccess(String razorpayPaymentID) {
    /**
     * Add your logic here for a successful payment response
     */
  }

  @Override
  public void onPaymentError(int code, String response) {
    /**
     * Add your logic here for a failed payment response
     */
  }
}

public class PaymentActivity extends Activity implements PaymentResultWithDataListener {
  // ...
  @Override
  public void onPaymentSuccess(String razorpayPaymentID, PaymentData paymentData) {
    /**
     * Add your logic here for a successful payment response
     */
  }
  @Override
  public void onPaymentError(int code, String response) {
    /**
     * Add your logic here for a failed payment response
     */
  }
}

Checkout.clearUserData(Context)

RazorpayClient razorpay = new RazorpayClient("[YOUR_KEY_ID]", "[YOUR_KEY_SECRET]");


String secret = "EnLs21M47BllR3X8PSFtjtbd";


JSONObject options = new JSONObject();
options.put("razorpay_order_id", "order_IEIaMR65cu6nz3");
options.put("razorpay_payment_id", "pay_IH4NVgf4Dreq1l");
options.put("razorpay_signature", "0d4e745a1838664ad6c9c9902212a32d627d68e917290b0ad5f08ff4561bc50f");


boolean status =  Utils.verifyPaymentSignature(options, secret);