detect all cameras android

user_5799692 0
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I have a app that uses the Camera2 API to get a preview of the camera. I want to choose between the lens of my phone. In my code I am using the following code:

CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
String[] ids = manager.getCameraIdList();

When I use my galaxy s10 that have 2 front facing cameras (regular and wide) and 3 rear facing cameras I only get 4 ids back from the manager:

0- regular rear
1- regular front
2- wide rear
3- wide front

why I don't get the 3 rear macro camera.

the problems appear in all of my phones that have more then 1 camera facing back

how can I get all of the rear cameras?

tnx ahead

android-camera2 camera android java
2 Answers

I find out that on some devices not all the cameras are returned in manager.getCameraIdList(); You can try to get CameraCharacteristics using cameraManager.getCameraCharacteristics(cameraId); with some ids from predefined list of possible camera IDs, something like this: String[] possibleCameraIDs = {"0", "1", "2", "3", "4", "5", "6", "7", "8"};

user_67832200

As per the documentation you are getting only the logical cameras.

public String[] getCameraIdList ()

Return the list of currently connected camera devices by identifier, including cameras that may be in use by other camera API clients.
Non-removable cameras use integers starting at 0 for their identifiers, while removable cameras have a unique identifier for each individual device, even if they are the same model.
This list doesn't contain physical cameras that can only be used as part of a logical multi-camera device.

Returns
String[]    The list of currently connected camera devices. This value cannot be null.

To get the physical cameras, use this

enter image description here enter image description here enter image description here

REFERENCES:

https://source.android.com/devices/camera/multi-camera

Camera2 replacing one logical stream with two physical streams in Android API 29

user_101830990
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