Different projects yielding different number of cameras

[Anonymous]

Hello,

First of all, great app! Works well and there is a great community behind
it.

I have a fairly technical question about the source code.

I want to implement a rear camera switcher just like in Open Camera with
the Camera 2 API. On my OnePlus 7 Pro and OnePlus 7T, the app queries all
the available cameras just find and can cycle through them.

I have read and dropped in logs in the source and know that it is querying
the available cameras with this:

        CameraManager manager =
(CameraManager)context.getSystemService(Context.CAMERA_SERVICE);
        try {
            return manager.getCameraIdList().length;
        }

It returns 4 ids, one for each camera, like I would expect on both devices.

Great. So I try to do the exact same thing as this code (and as suggested
by official documentation) in my project. But weirdly enough, I get only 2
ids for the same devices, not letting me query for the other ones in any
way.

What could possibly explain this? Our build.gradles are similar. Same
target SDK, compile SDK, different min SDK however, but CameraManager
requires API 21 at least anyway.

Thanks for any help,
Steven P

[Mark]

I've no idea why this might be I'm afraid.

As a stab-in-the-dark - is it affected by the package name (e.g., changing Open Camera's code to use a different package name)?