Test for Cameras

Questions
1

I’m trying to test for front and back cameras separately in my code. I wrote what I thought was a nice test using cameraSource() only to find that on an iPad 1, this returns an error message rather than nil as I’d hoped. Will appreciate any suggestions.

Also, the docs say cameraSource() will return CAMERA_FRONT or CAMERA_BACK but it actually seems to return a 1 or 2.

thanks

2

@DaveW Normally a function will return a number value. That number corresponds to a name. If you print(CAMERA_FRONT) and print(CAMERA_BACK) they will print 2 and 1. Normally you would do something like “if cameraSource() == CAMERA_FRONT then something”

3

@DaveW Here’s code that I tried on my iPad1. It prints “no camera”.


function setup()
    if cameraSource()== nil then
        print("no camera")
    end
end

This also shows on my ipad1 when using camera code


Camera functionality is not available on this device.
4

@dave1707 The following code seems to work on an iPad 1. No clue why. Not pretty but I’m not going to argue with success at this point. I haven’t been able to test it on a device with only 1 camera. Thanks for pointing me in the right direction.

    FrontCamera = false
    BackCamera = false      
    if cameraSource() ~= nil  then
        cameraSource(CAMERA_FRONT)
        if cameraSource() == CAMERA_FRONT then
            FrontCamera = true
        end
        cameraSource(CAMERA_BACK)
        if cameraSource() ==  CAMERA_BACK then
            BackCamera = true
        end 
    end