Demo project showing the Razorpay's Payment gateway integration with Android app.
Visit Razorpay docs
STEPS TO INTEGRATE RAZORPAY PAYMENT GATEWAY::
1. Generate API key from Dashboard-> Settings
2. Copy the Key Id and Key Secret appear on a pop-up
3. Use it to get the Order_id [from Postman or server]
4. Add the Key Id in AndroidManifest in meta-data tag with name-> com.razorpay.ApiKey
5. Set the Key Id in Checkout object in Activity
6. Set the fields with proper details and call startPayment()