How to inject Javascript to GeckoView on Android

Question

I want to use GeckoView in my project. But I need to run some Javascript code in this project. How can I achieve this?

What do you mean by "inject javascript"? Can you provide an example of your use-case? — Dexter, Jul 30 '19 at 07:53
Something like this : https://medium.com/appunite-edu-collection/webview-with-injected-js-script-13eb1e0257c9 — DummytoDummy, Jul 31 '19 at 11:17

Dexter · Answer 1 · 2019-08-08T07:34:06.083

3

One possible way could be to use the GeckoSession.loadUri API to inject the JavaScript code

loadUri("javascript:{js_code}")

This used to work, I'm not sure it works any longer :)

Edit - another option would be to create a WebExtension to interact with content. GeckoView has some documentation here. You should be able to declare a content script file name in the extension's manifest and bundle the content script with your extension.

edited Aug 08 '19 at 07:34

answered Aug 01 '19 at 08:13

Dexter

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nope, it's not working for us. I'm still searching. – DummytoDummy Aug 08 '19 at 07:14
I've slightly tweaked my answer to provide a second option, let me know if that works. – Dexter Aug 08 '19 at 07:34
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Really thanks for your effort, I appreciate that. I've searched WebExtensions too. I think WebExtensions are used to run .js files from resource but I want to work with javascript in the loaded page. So WebExtension won't work for my case, was it? – DummytoDummy Aug 08 '19 at 07:41

How to inject Javascript to GeckoView on Android

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