Extract HTML source from compose message in Android

I am looking for a freelancer who are expert in Android studio. I need some help with extract the html source from the webview richtextview because I want to fetch the html source so I can send the email when I click on the send button in the option menu. I tried to use edittext as its easy to fetch the HTML data but the edittext doesnt support the image when I copy the image from google to paste on the edittext. If you know how I can fetch the HTML source in number of ways to allow me to send the email, I would be grateful. My budget is $30 1 day deadline. I am looking forward to work with you.