is it posible to call java class from javascript?

Question

I need to make some UI part in javascript for android application for that I'm writing some code in javascript and load it in android web view. Now, I want to call java class from javascript.

Is it possible to call java class from javascript?

Thanks in Advance!

Why are you splitting the application that way? Why not just write it all,including UI, in Java? — Soren
– Soren, Commented Jul 7, 2011 at 5:34
because i need to draw much complex UI in android you can see the following question at stackoverflow.com/q/6596294/562296 — milind
– milind, Commented Jul 7, 2011 at 5:39

Gregory · Accepted Answer · 2011-07-07 15:52:13Z

4

It's possible, but I wouldn't do it for your given use case :) (the UI could be done with the Android framework)

You can add what they call "Javascript Interfaces", which are basically links from Javascript to Java code. First, define a class to bind containing the methods you which to call, and add it to your WebView :

    class HelloInterface  
    {  
        public void test(String name)  
        {  
            Log.i(TAG, "Hello " + name); 
        }  
    } 

    webview.addJavascriptInterface(new HelloInterface(), "HELLO");

Then, from your javascript code, you can just call

window.HELLO.test("Webview");

edited Jul 7, 2011 at 15:52

answered Jul 7, 2011 at 5:56

Gregory

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Gregory Over a year ago

I meant I wouldn't use javascript just to create a UI that could be done with the native Android framework :) Besides that, binding java and javascript is fine.

Harun · Accepted Answer · 2011-07-07 05:47:01Z

1

Refer the following urls,

http://www.rgagnon.com/javadetails/java-0170.html

Post #6 of-> http://ubuntuforums.org/showthread.php?t=565819

Hope this helps..

answered Jul 7, 2011 at 5:47

Harun

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Comments

siliconeagle · Accepted Answer · 2011-07-07 05:53:29Z

0

its actually reall easy (and cool) use:

webView.addJavascriptInterface(js, "pageObject");

js is a java object made in you activty (or somewhere where you init the webview), pageObject is the namespace identifier (variable) you can use with javaScript on your webpage.

answered Jul 7, 2011 at 5:53

siliconeagle

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