I need a sample app converted from HTML/JS to native android code

The demo code located at [login to view URL] is written in HTML/JS. I need a native Android app that performs the same functions. Please see the attached screen mockups that show the desired UX with extensive notes on implementation. The application must be 100% native android code! Please note that when you review this demo, for Step 5 you must 1. click into the App "Context Test App_DT_TST" 2. then click into "View Stored Data Access Permissions" 3. then select "allow" Please see the attachment "[login to view URL]" This is OAuth2 provider; similar to Facebook or Twitter. The application will need to show a browser window to allow the user to grant access to the app and close it when the user has completed the task. From there, the application must separately request access to the specific resources.