I am new in Payment Gateway. Currently, I am working on a mobile app where I need to integrate PayU payment gateway in android app.
So far, I have created a code for TES
PayUmoney merchant dashboard - at right top you will see "Live Mode" just toggle it to make is "Test Mode". The Android app integration of PayUmoney is simple. Add these dependency in gradle file
implementation 'com.payumoney.core:payumoney-sdk:7.4.4'
implementation 'com.payumoney.sdkui:plug-n-play:1.4.4'
You can find PHP checksum Hash files and android source code in this reference link.