❔ Xamarin Android NFC App Open User Input after Button Click

we have installed an Git Repository with an NFC Reader Write Applikation and it hase The bUtton Read and Write. Now i want it to Open user Input after the Clicking of the Write Button. I know now where the View parts are that the Buttons are Located etc but idk how to put an Input in it. I hope i clarified what my Problem is. If anyone can Help Pleas help