How to use CameraX on Clover Station Duo and select the correct Camera Lens

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Rafael Wolf de Goes asked Jul 25, '23 acastaneda answered Aug 11, '23

How to use CameraX on Clover Station Duo and select the correct Camera Lens

As far as I could understand from the docs, Clover Station Duo has 2 cameras, and it's possible to use the cameras with an Intent which would open another app, selecting the appropriate camera based on the CAMERA_ID extra.

static int CAMERA_ID_MERCHANT_FACING = 1;
static int CAMERA_ID_CUSTOMER_FACING = 0;

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra("android.intent.extra.CAMERA_ID", CAMERA_ID_MERCHANT_FACING);
startActivity(cameraIntent);

However, we need to use the camera inside our app, and in order to do that, we are using a well known and well supported library developed by Google, called CameraX.

Is there any way that we can identify the CAMERA_ID_MERCHANT_FACING using CameraX? If yes, how can we achieve that? Could you please provide an example?

Also, are both CAMERA_ID_MERCHANT_FACING and CAMERA_ID_CUSTOMER_FACING considered as LENS_FACING_FRONT?

Thank you!

Clover Station Merchant Clover Station 2018

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Answer 1 · 2023-08-11T19:22:54Z

acastaneda answered Aug 11, '23

Hi Rafael,

Yes, both CAMERA_ID_MERCHANT_FACING and CAMERA_ID_CUSTOMER_FACING are considered as LENS_FACING_FRONT because the screen that shows the picture taken by the lens is on the same side as the lens for each of them. A way to check for a front-facing camera is

int numCameras= Camera.getNumberOfCameras();
for(int i=0;i<numCameras;i++){
    Camera.CameraInfo info = new CameraInfo();
    Camera.getCameraInfo(i, info);
    if(CAMERA_FACING_FRONT == info.facing){
        return true;
    }
}
return false;

return i to get the number of the front-facing camera or 0 if not found.

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