Adding custom menu for webview text selection.

Hi,

I am trying to add a custom menu for in webview's text selection. I am able to achieve the same in ios but in android, I will have to do it in mainAcitivity. I don't want to add to mainActivity as it will add the custom menu for all the webviews in the app, and I want only for one of the webview.

Note:
I am developing an app which has more than one webview and I want custom text-selection menu only for one webview.

Thanks in advance