Android video app get camera device id

Nigel January 24, 2016 3:34 am

The android video app get camera device id tutorial describes how to select the camera on the device that you would want to use for your android video application.

Normal in smartphone devices you would expect to see two camera’s one front facing normally used for selfie mode and a main rear facing camera.

In this tutorial we will be hard coding in the rear camera to be used for the video capture part of the android video application.

This tutorial will show one way to select the rear camera by its camera id value and also how to get a map of the stream configurations which will provide the details of the camera resolutions for video and preview for this particular case.

Get Code

The code to start this tutorial is on github here

https://github.com/mobapptuts/android_camera2_api_video_app.git Tag camera2-video-camera-id

or you can run this command

git clone https://github.com/mobapptuts/android_camera2_api_video_app.git –branch camera2-video-camera-id

Steps

Create a member for the camera device id

private String mCameraId;

Find the camera device id, get the stream configuration map and set the member cameraId

private void setupCamera(int viewWidth, int viewHeight) {
        CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
        try {
            for(String cameraId : cameraManager.getCameraIdList()) {
                CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);
                if(cameraCharacteristics.get(CameraCharacteristics.LENS_FACING) ==
                        CameraCharacteristics.LENS_FACING_FRONT){
                    continue;
                }
                mCameraId = cameraId;
                return;
            }
        } catch (CameraAccessException e) {
            e.printStackTrace();
        }
    }