For this app we wanted to be able to post an image from our app directly from. To do this I used a plug’in for Unity that makes setting it up a bit easier. After I set it up on the FB dev page I did a few tests with it. I could easily post text messages to FB and also images.
After getting it to post I changed the default main camera to the ARcamera but when I did this the image that it published was just a black screen. I did some research into why this was happening. Using the “ReadPixels” method is supported by Vuforia for posting screen shots which is what I was using and the plugin was working as it did post. What I did find on the Vuforia forum that people were having similar problems when using a Samsung Note, the device I am using.