Как я могу сделать кнопку для переключения камеры использования org.opencv.android.JavaCameraView

Question

Я хочу использовать JavaCameraView для своего проекта, но не могу решить, когда хочу сделать кнопку для переключения камеры с помощью JavaCameraView

, как перейти с камеры по умолчанию в Android на javaCamera, когда я хочу использоватькнопка переключения камеры

Это мой XML Activity

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:opencv="http://schemas.android.com/apk/res-auto"
    tools:context=".CentreActivity">

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center|top"
        android:layout_marginBottom="150dp">

        <org.opencv.android.JavaCameraView
            android:id="@+id/camera_view"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            opencv:camera_id="any"
            opencv:show_fps="true" />

        <Button
            android:id="@+id/camera_flip"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:background="@drawable/kamera"/>
    </RelativeLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="150dp"
        android:layout_gravity="bottom|center"
        android:background="@color/colorPrimaryDark">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Hello!"
            android:id="@+id/tv_text"
            android:textSize="18pt"
            android:layout_centerInParent="true"
            android:textColor="@android:color/white">
        </TextView>
    </RelativeLayout>
</FrameLayout>

---

И это мой Activity.java

package com.example.englishlearning;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.hardware.Camera;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceView;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;

import androidx.appcompat.app.AppCompatActivity;

import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.JavaCameraView;
import org.opencv.core.Mat;

public class CentreActivity extends Activity implements CameraBridgeViewBase.CvCameraViewListener2 {
    private Camera mCamera;
    private ViewActivity mPreview;
    private Button switchCamera;
    JavaCameraView cameraPreview;
    private boolean cameraFront = false;
    private Context myContext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_view);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        myContext = this;

        mCamera = Camera.open();
        mCamera.setDisplayOrientation(90);
        cameraPreview = (JavaCameraView) findViewById(R.id.camera_view);
        mPreview = new ViewActivity(myContext, mCamera);
        cameraPreview.setVisibility(SurfaceView.VISIBLE);
        cameraPreview.setCvCameraViewListener(this);


        switchCamera = (Button) findViewById(R.id.camera_flip);
        switchCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //get the number of cameras
                int camerasNumber = Camera.getNumberOfCameras();
                if (camerasNumber > 1) {
                    //release the old camera instance
                    //switch camera, from the front and the back and vice versa

                    releaseCamera();
                    chooseCamera();
                } else {

                }
            }
        });

        mCamera.startPreview();

    }

    private int findFrontFacingCamera() {

        int cameraId = -1;
        // Search for the front facing camera
        int numberOfCameras = Camera.getNumberOfCameras();
        for (int i = 0; i < numberOfCameras; i++) {
            Camera.CameraInfo info = new Camera.CameraInfo();
            Camera.getCameraInfo(i, info);
            if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                cameraId = i;
                cameraFront = true;
                break;
            }
        }
        return cameraId;

    }

    private int findBackFacingCamera() {
        int cameraId = -1;
        //Search for the back facing camera
        //get the number of cameras
        int numberOfCameras = Camera.getNumberOfCameras();
        //for every camera check
        for (int i = 0; i < numberOfCameras; i++) {
            Camera.CameraInfo info = new Camera.CameraInfo();
            Camera.getCameraInfo(i, info);
            if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
                cameraId = i;
                cameraFront = false;
                break;

            }

        }
        return cameraId;
    }

    public void onResume() {
        super.onResume();
        if(mCamera == null) {
            mCamera = Camera.open();
            mCamera.setDisplayOrientation(90);
            mPreview.refreshCamera(mCamera);
            Log.d("nu", "null");
        }else {
            Log.d("nu","no null");
        }

    }

    public void chooseCamera() {
        //if the camera preview is the front
        if (cameraFront) {
            int cameraId = findBackFacingCamera();
            if (cameraId >= 0) {
                //open the backFacingCamera
                //set a picture callback
                //refresh the preview

                mCamera = Camera.open(cameraId);
                mCamera.setDisplayOrientation(90);
                mPreview.refreshCamera(mCamera);
            }
        } else {
            int cameraId = findFrontFacingCamera();
            if (cameraId >= 0) {
                //open the backFacingCamera
                //set a picture callback
                //refresh the preview
                mCamera = Camera.open(cameraId);
                mCamera.setDisplayOrientation(90);
                mPreview.refreshCamera(mCamera);
            }
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        //when on Pause, release camera in order to be used from other applications
        releaseCamera();
    }

    private void releaseCamera() {
        // stop and release camera
        if (mCamera != null) {
            mCamera.stopPreview();
            mCamera.setPreviewCallback(null);
            mCamera.release();
            mCamera = null;
        }
    }

    @Override
    public void onCameraViewStarted(int width, int height) {

    }

    @Override
    public void onCameraViewStopped() {

    }

    @Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
        return null;
    }



}

помогите мне исправить мой код