Edit:
After paypal login, I could successfully complete transaction.But I need to match the successUrl in paypal to verify both url is same and
Edit
It seems from the screen shots you're embedding a subscription page into your webview, and trying to match successUrl
with the return URL.
Check the answer in this post to set up the retrun URL first in your profile
Obtain the URL String webUrl = webView.getUrl();
if you want to make match/ verification with the defined successUrl