How to inject data into webview?

Question

Android

There is an application running under android 4.4, which has a webview. This webview opens a page with a form with many fields (tag ). The question is whether it is possible to automatically fill in some fields on this form after loading the page, if so, how to do it?

Answer 1

Through the butt:

public class WebClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }

    @Override
    public void onPageFinished(WebView view, String url) 
    {       
        view.loadUrl("javascript:document.forms[0].q.value='qwerty'");
    }
}

WebView webview = new WebView();
webview.setWebViewClient(new WebClient());
webView.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("toster.ru");