Project for Prince

I have android app which is partly native partly webview. After login app take to webview. Following feature I need [login to view URL] to be continuously logged into app unless he specifically logout from app. [login to view URL] has currently cart function. I want when logged in from app based on seller id saved in [login to view URL] of the app cart should be filter out data. [login to view URL] on Webview pages and suddenly internet is not available user should be taken to login page when opening app. 4. On webview at the bottom ( on mobile 5 inch mobile screen it is observed ) there is major blank space at bottom remove that blank space. 5. Setup marketplace of Payumoney documentation is already shared. Refund related page also need to be developed by understanding refund functionality of payumoney marketplace.