Hi , I have some error in BaseLoaderCallback in android Studio Please look at the code and possibly guide me

edit

MainActivity_show_camera
-----
package tahanian.mohsen.camera.one;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.view.SurfaceView;
import android.view.WindowManager;

import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import org.opencv.android.JavaCameraView;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.imgproc.Imgproc;

// OpenCV Classes

public class MainActivity_show_camera extends AppCompatActivity implements CvCameraViewListener2 {

    // Used for logging success or failure messages
    private static final String TAG = "OCVSample::Activity";

    // Loads camera view of OpenCV for us to use. This lets us see using OpenCV
    private CameraBridgeViewBase mOpenCvCameraView;

    // Used in Camera selection from menu (when implemented)
    private boolean              mIsJavaCamera = true;
    private MenuItem             mItemSwitchCamera = null;

    // These variables are used (at the moment) to fix camera orientation from 270degree to 0degree
    Mat mRgba;
    Mat mRgbaF;
    Mat mRgbaT;

    private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
        @Override
        public void onManagerConnected(int status) {
            switch (status) {
                case LoaderCallbackInterface.SUCCESS:
                {
                    Log.i(TAG, "OpenCV loaded successfully");
                    mOpenCvCameraView.enableView();
                } break;
                default:
                {
                    super.onManagerConnected(status);
                } break;
            }
        }
    };
    private int show_camera;

    public MainActivity_show_camera() {
        Log.i(TAG, "Instantiated new " + this.getClass());
        mOpenCvCameraView = (JavaCameraView) findViewById(R.id.show_camera_activity_java_surface_view);
    }



    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.i(TAG, "called onCreate");
        super.onCreate(savedInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

        setContentView(R.layout.show_camera);

        mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);

        mOpenCvCameraView.setCvCameraViewListener(this);
    }

    private void setContentView(int show_camera) {
        this.show_camera = show_camera;
    }

    private Intent getWindow() {
        return null;
    }

    private void findViewById(int show_camera_activity_java_surface_view) {
    }


    @Override
    public void onPause()
    {
        super.onPause();
        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    @Override
    public void onResume()
    {
        super.onResume();
        if (!OpenCVLoader.initDebug()) {
            Log.d(TAG, "Internal OpenCV library not found. Using OpenCV Manager for initialization");
            OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_0_0, this.mLoaderCallback);
        } else {
            Log.d(TAG, "OpenCV library found inside package. Using it!");
            mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
        }
    }

    public void onDestroy() {
        super.onDestroy();
        if (mOpenCvCameraView != null)
            mOpenCvCameraView.disableView();
    }

    public void onCameraViewStarted(int width, int height) {

        mRgba = new Mat(height, width, CvType.CV_8UC4);
        mRgbaF = new Mat(height, width, CvType.CV_8UC4);
        mRgbaT = new Mat(width, width, CvType.CV_8UC4);
    }

    public void onCameraViewStopped() {
        mRgba.release();
    }

    public Mat onCameraFrame(CvCameraViewFrame inputFrame) {

        // TODO Auto-generated method stub
        mRgba = inputFrame.rgba();
        // Rotate mRgba 90 degrees
        Core.transpose(mRgba, mRgbaT);
        Imgproc.resize(mRgbaT, mRgbaF, mRgbaF.size(), 0,0, 0);
        Core.flip(mRgbaF, mRgba, 1 );

        return mRgba; // This function must return
    }


}`


My layout : show_camera
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    xmlns:opencv="http://schemas.android.com/apk/res-auto"
    android:layout_height="match_parent">

    <org.opencv.android.JavaCameraView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:visibility="gone"
        android:id="@+id/show_camera_activity_java_surface_view"
        opencv:show_fps="false"
        opencv:camera_id="any" />

</LinearLayout>

My Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="tahanian.mohsen.translate.camera.one" >



        <application
            android:allowBackup="true"
            android:icon="@mipmap/ic_launcher"
            android:label="@string/app_name"
            android:supportsRtl="true"
            android ...