Neatplug. Ask him for a special version.

May I know what plugin you are using?  

Prime sense will not work. You need to use a different plugin.

I had tried the solution from your link, but I having hard time to make it work. Could you provide some example for us to refer? And how can we re-import the ".jar"(or other files needed) back into unity and build?

Hey AlessandroB,

I'm having issues with Vuforia and Prime31 facebook plugin (which uses Facebook SDK plugin). I'm actually thinking that your approach is the only one left for me to make this work. Did you manage to make thinks work that way? Do you have an example using the facebook SDK and Vuforia merged into a single activity class? 

If so, you could save my life :)

Thanks a lot,

Antho

Hi again,

here is one thing you may want to try:

- export your Unity project to an Android project (which you can then work on from Eclipse, like a regular Java Android project), as explained in this short tutorial:

https://developer.vuforia.com/resources/dev-guide/extending-unity-android-activity-and-adding-custom-views-eclipse

Then you can extend the QCARPlayerActivity, pretty much as shown in the tutorial from there, you basically have access to all the activity life cycle methods of the main activity, and you can insert custom code in it. 

In practice, you could insert the necessary code for the Facebook plugin into the main QCAR activity, so to have a single Main (launcher) activity which handles both Vuforia and Facebook.

I shared this with our engineering team as well, and this seems to be the only possible solution... so I hope this can work for you.

Not really. Its integrating Facebook SDK. SO i guess its required. Anything i can do with Vuforia? 

Not that I'm aware of... is there any chance that you can make the NP plugin not as a launcher ?

Ya. Tried that. Both of them needs to be the launcher. Is there any way i can remove Vuforia as the launcher?

Hi, never tried that plugin;

have you tried putting both activities in the same android manifest and remove the "Launcher" category from one of them ?