Android Question Inject Javascript in webview

Mansour01 · Oct 7, 2013

Hi
since yesterday i tried to understand how to inject some javascript (*.js) into a loaded url , but i can't figure it out how to do that , something that works like Greasemonkey .
can anyone do me a favor & make a small but functional example ?!
Just something like :

alert('Hello, World!');

Thank You

NJDude · Oct 8, 2013

Search for WebViewExtras library.

Mansour01 · Oct 8, 2013

I did , but i can't really figure it out how it works !
I almost read all of thread about Webextra .
that's why i need a functional example ,
Thank You

warwound · Oct 8, 2013

Do you want to directly inject javascript such as:

B4X:

MyWebView.LoadUrl("javascript:alert('Hello World')")

Or do you want to dynamically create a new <script> tag in the webpage that will load an external .js javascript file?
This second option is a bit more complicated, take a look at these search results: https://www.google.co.uk/search?q=javascript+add+script+tag&ie=UTF-8&oe=UTF-8.

Martin.

Mansour01 · Oct 8, 2013

warwound said:
Do you want to directly inject javascript such as:

B4X:

MyWebView.LoadUrl("javascript:alert('Hello World')")

Or do you want to dynamically create a new <script> tag in the webpage that will load an external .js javascript file?
This second option is a bit more complicated, take a look at these search results: https://www.google.co.uk/search?q=javascript add script tag&ie=UTF-8&oe=UTF-8.

Martin.

Thank you Martin ,
the problem was my script's structure , at last i did the job .
Tanx

Android Question Inject Javascript in webview

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