Steps:

1. Add internet permission in manifest :
    <uses-permission android:name="android.permission.INTERNET"/>

2. Add dependency in build.gradle:
    compile 'com.android.support:design:25.2.0'
	
3. Download the aar file and add in project

4. File -> New -> New Module -> Select Import .JAR/.ARR packages -> Then select the downloaded AAR file

5. Add module as a dependency in build.gradle
	compile project(':libpayment-release')
	
	
6. To initiate payment create an intent for SelectPaymentActivity and add required data:
    
     Intent i = new Intent(SplashScreen.this, PaymentActivity.class);
     i.putExtra("txnId","123657645678");
     i.putExtra("dateTime","2018-08-20 12:12:12");
     i.putExtra("amount","580");
     i.putExtra("merchantId","M0002");
     i.putExtra("returnURL","http://localhost:8080/");
     i.putExtra("apiKey","jpuT6032");
     i.putExtra("udf1","sdfsdf");
     i.putExtra("udf2","cxvbxgt");
     i.putExtra("custMail","abc@abc.com");
     i.putExtra("custMobile","9833700987");
     i.putExtra("URL","http://139.59.1.254:8080/payone");
     startActivity(i);
	
	
