Android Question How to save variables from webview?

Dear,
I have a local html page (login.html) have 2 text input, remember me checkbox, and login button.
And I have another page (main.html), which is loaded when the user click on login button if the login succeeded, or if failed, it show a label inside the login.html page.

This scenario repeats each time the form is loaded.

I want to, when select remember me, that the 2 variables inside the textboxes in login.html (username and password) to be save somehow, so on next launch of the application, i call the login.php web service and pass to it saved parameter.

Any idea how to do that?

Thanks