This is a simple example of paypal integration in andorid using "easypaypal" module.
Step 1 : import module "easypaypal" into your project.
Step 2 : Declare and initialize "PayPalPaymentMain" class and than in onCreate() method
payPalPaymentMain = new PayPalPaymentMain(context, PayPalConfiguration.ENVIRONMENT_SANDBOX, getString(R.string.paypal_client_id));
payPalPaymentMain.onPayPalPayment(strProductPrice, "USD", strProductName, context);
Step 3: override "onActivityResult()" and do following
payPalPaymentMain.setPaymentResponse(requestCode, resultCode, data);Step 4 : implements "PayPalResult" interface into your activity/fragment and override method "onPayPalResult(PayPalResultData resultData)".
Step 5 : Use paypal details like
resultData.getPayPalAmount();
Use all the data like this and enjoy....:)