I was struggling with checking the appfilter.xml for not made icons and missing activities and figure out to make an script/app for that. The result made my life much easier, so I thought on making it look good (as I'm primary an Web/UI Designer) and this is the result.
How it works?
The tool is very simple. You paste your appfilter.xml content in first input field and requested appfilter.xml in second. You Fire Up the parser and you got yourself three tabs. One is with filtered activities, one with original appfilter and one with requested. The duplicates are marked red so you can skip those. You can then select and copy ComponentInfo with activity and paste it into your project. That simple.
I also made it possible to click on the name of the app, and if it's Google PlayStore App, you get the app icon, description and link to the Play Store. You can always click on the icon and get the full resolution of it for further modifications.
If you find any bugs, please report here in the thread, I'll try to fix it. This is first public release and I'm sure I missed something
You can access it on this link: AppFilter Parser
Hope you find it useful and if you like it, hit the thanks button below and you can by me a bear with donation