Develop Reference

Calling an activity from jquery in cordova

I am new to cordova so wanted to know if it is possible or not.
I have a functionality to implement, which I think I will be more comfortable in android native activity.
So can I call the native android from an html page or through jquery and the vice versa.

You need binding JavaScript code to Android code (bridge)
See official documentation

here is a good tutorial
http://itsmycodeshare.blogspot.in/2016/01/create-custom-cordova-plugins-using.html
and this is basic plugin example which interacts with js from Android java
https://github.com/don/cordova-plugin-hello
add your further activity and other code in <plugin_name>.java in src folder.

how to parse HTML in android and execute javascript

I am trying to figure out how to parse HTML where I should execute javascript.
I was trying a lot of way to do that, but still have nothing
For example:
HTMLUnit - seems to me like the best parser to execute javascript, but when I try to add dependencies getting error, that haven't solved in stackoverflow
Selenium Web Driver. Also looks good, but again a lot of problem with dependencies. And cannot find any examples of that
Rhino. Very limited documentation about integration in android
JSoup. Pretty good, but cannot execute javascript
I will be very thankful who will try me to figure out how to parse HTML with javascript with some examples. Thank you very much

You should think of using Appium to parse your HTML webpages on Android. Appium is an extension of Selenium Webdriver providing automation capabilities on Android and iOS.
You can get started from this link: How to setup Appium Environment for Android Automation?
Also, you can execute javascript using appium driver:
js = (JavascriptExecutor) driver;
js.executeScript("<JAVASCRIPT CODE>");

Javascript not working with Gingerbread Webkit WebView, can I somehow override code?

I have a webapp with a webview where the javascript is not compatible with the webkit that ships with Gingerbread. Is there a way to inject/override code without making changes to the site itself?

You can use
wv.loadUrl("javascript:...");
to execute arbitrary JavaScript (here shown as ...) in the context of the current page of a WebView (here referred to as wv). Whether you can use that to patch up your problems, I cannot say.

How to call .CS WebService to javascript for android?

I have a wsdl service and as i generate it with svcutil.exe, it gave me a .cs file. Now my question is how can I call the service with javascript for android. where do I go from here? any suggestions or any reference/step-by-step tutorial or a sample demo would be a great help for me. I am developing an application for android with phonegap 1.4.1, Many thanks.

This tutorial describe how to call a webservice directly from javascript:
http://www.ibm.com/developerworks/webservices/library/ws-wsajax/

Android; how can you invoke a SOAP web service without using ksoap?

I'm not asking to be spoon fed here, just need some pointers on where to direct my searching
I want to call a SOAP web service, possibly this one
I don't want to use KSoap, is there anyway I can do this using the apache libraries that are included with the Android SDK?

I want to call a SOAP web service, possibly this one
That does not look like a SOAP Web service. Try clicking that link in a browser, and you will see it is a plain XML document.
is there anyway I can do this using the apache libraries that are included with the Android SDK?
Yes. For true SOAP, plan to spend a substantial amount of time writing your own SOAP layer atop HttpClient. However, for consuming a simple XML document like the one you link to above, it should be fairly simple.

I think the XML is not WebService, it is simple XML... To call WebService with SOAP you can use kSOAP2 on Android platform, but I've created an another - proof-of-concept - SOAP client:
http://wiki.javaforum.hu/display/ANDROIDSOAP/Home