title: Integration of payment gateway for Android
body: <p>I tried to integrate payment gateway using <a href="https://github.com/paypal/PayPal-Android-SDK" rel="noreferrer">PayPal SDK</a>. It works fine. But what I want is, is there any way to avoid the default UI of paypal payment?</p>
  
  <p>I mean paypal SDK opens an UI to input credit card info (card number, expiry date, CCV) to purchase something. I already have those information. So I just want to avoid to input those information again.</p>
  
  <p>Is there any way to pass those information using any method instead of paypals UI?</p>
  
  <p>Thanks in advance.</p>