Add javascript into WebView

Question

I am developing an application where in 1 part I want to add javascript into WebView.. But am not getting how to do it in an appropriate way.. Can anyone pls guide me into this?????

I am doing it like:

      wb=(WebView)findViewById(R.id.webView1);
        wb.getSettings().setJavaScriptEnabled(true);
        wb.getSettings().setPluginState(WebSettings.PluginState.ON);
        wb.getSettings().setPluginsEnabled(true);

        wb.loadUrl("javascript:<script " ></script> ");
        wb.setWebViewClient(new HelloWebViewClient());


 public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

Have you tried pushing it through the *javascript:* protocol? — pablisco, Dec 16 '11 at 11:00

score 12 · Accepted Answer · answered Dec 19 '11 at 05:52

12

It was very simple..also without using any javascriptInterface..In my code, Instead writing:

 wb.loadUrl("javascript:<script>   </script>");

use,

  wb.loadDataWithBaseURL(null,"<script>   </script>","text/html","utf-8",null);

and its working now :)

answered Dec 19 '11 at 05:52

Kanika

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But I want to add javascript file. how can I add it? – Krishna Mar 22 '17 at 09:34
I tried [this](https://hastebin.com/icawevuwow.cpp) as per your suggestion, but not working at all, getting blank screen :( – Narendra Singh Aug 18 '18 at 06:10
Does this add the scripts to the webview? – Fábio Santos Feb 08 '19 at 22:37

score 0 · Answer 2 · answered Dec 16 '11 at 11:28

0

Look at these nice tutorials about how to implements javascript in webview in android..

I think its provides you all the information what you needed..

Android WebView

Android WebView, Javascript and CSS

EDIT: Further if your implemented code having any exception or not working then please post that code and exception then here we can help you..

answered Dec 16 '11 at 11:28

user370305

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My code runs instantly when I add it to webview. How can I just add a function which can be latter called from html??....for example I want to add a function which will be called when user will fill recaptcha with same name I used in data-callback of recaptcha – Zohab Ali Jul 28 '18 at 11:26

Add javascript into WebView

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