Revision history [back]

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:theme="@style/AppTheme"
            >
            <activity
                android:name=".MainActivity_show_camera"
                android:label="@string/app_name"
                android:theme="@style/AppTheme"
                android:screenOrientation="portrait">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />

                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>

        <supports-screens   android:resizeable="true"
            android:smallScreens="true"
            android:normalScreens="true"
            android:largeScreens="true"
            android:anyDensity="true" />

        <uses-permission android:name="android.permission.CAMERA"/>
        <uses-feature android:name="android.hardware.camera" android:required="false"/>
        <uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
        <uses-feature android:name="android.hardware.camera.front" android:required="false"/>
        <uses-feature android:name="android.hardware.camera.front.autofocus" android:required="false"/>

    </manifest>


and BaseLoaderCallback.java (The source code is 10 errors)

package org.opencv.android;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.util.Log;

/**
 * Basic implementation of LoaderCallbackInterface.
 */
public abstract class BaseLoaderCallback implements LoaderCallbackInterface {

    public BaseLoaderCallback() {
        this();
    }

    public BaseLoaderCallback(tahanian.mohsen.translate.camera.one.MainActivity_show_camera AppContext) {
        mAppContext = AppContext;
    }

    public BaseLoaderCallback(MainActivity_show_camera mainActivity_show_camera) {
    }

    public BaseLoaderCallback(CameraBridgeViewBase.CvCameraViewListener2 mainActivity_show_camera) {

    }

    public void onManagerConnected(int status)
    {
        switch (status)
        {
            /** OpenCV initialization was successful. **/
            case LoaderCallbackInterface.SUCCESS:
            {
                /** Application must override this method to handle successful library initialization. **/
            } break;
            /** OpenCV loader can not start Google Play Market. **/
            case LoaderCallbackInterface.MARKET_ERROR:
            {
                Log.e(TAG, "Package installation failed!");
                AlertDialog MarketErrorMessage = new AlertDialog.Builder(mAppContext).create();
                MarketErrorMessage.setTitle("OpenCV Manager");
                MarketErrorMessage.setMessage("Package installation failed!");
                MarketErrorMessage.setCancelable(false); // This blocks the 'BACK' button
                MarketErrorMessage.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                });
                MarketErrorMessage.show();
            } break;
            /** Package installation has been canceled. **/
            case LoaderCallbackInterface.INSTALL_CANCELED:
            {
                Log.d(TAG, "OpenCV library instalation was canceled by user");
                finish();
            } break;
            /** Application is incompatible with this version of OpenCV Manager. Possibly, a service update is required. **/
            case LoaderCallbackInterface.INCOMPATIBLE_MANAGER_VERSION:
            {
                Log.d(TAG, "OpenCV Manager Service is uncompatible with this app!");
                AlertDialog IncomatibilityMessage = new AlertDialog.Builder(mAppContext).create();
                IncomatibilityMessage.setTitle("OpenCV Manager");
                IncomatibilityMessage.setMessage("OpenCV Manager service is incompatible with this app. Try to update it via Google Play.");
                IncomatibilityMessage.setCancelable(false); // This blocks the 'BACK' button
                IncomatibilityMessage.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                });
                IncomatibilityMessage.show();
            } break;
            /** Other status, i.e. INIT_FAILED. **/
            default:
            {
                Log.e(TAG, "OpenCV loading failed!");
                AlertDialog InitFailedDialog = new AlertDialog.Builder(mAppContext).create();
                InitFailedDialog.setTitle("OpenCV error");
                InitFailedDialog.setMessage("OpenCV was not initialised correctly. Application will be shut down");
                InitFailedDialog.setCancelable(false); // This blocks the 'BACK' button
                InitFailedDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new OnClickListener() {

                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                });

                InitFailedDialog.show();
            } break;
        }
    }

    public void onPackageInstall(final int operation, final InstallCallbackInterface callback)
    {
        switch (operation)
        {
            case InstallCallbackInterface.NEW_INSTALLATION:
            {
                AlertDialog InstallMessage = new AlertDialog.Builder(mAppContext).create();
                InstallMessage.setTitle("Package not found");
                InstallMessage.setMessage(callback.getPackageName() + " package was not found! Try to install it?");
                InstallMessage.setCancelable(false); // This blocks the 'BACK' button
                InstallMessage.setButton(AlertDialog.BUTTON_POSITIVE, "Yes", new OnClickListener()
                {
                    public void onClick(DialogInterface dialog, int which)
                    {
                        callback.install();
                    }
                });

                InstallMessage.setButton(AlertDialog.BUTTON_NEGATIVE, "No", new OnClickListener() {

                    public void onClick(DialogInterface dialog, int which)
                    {
                        callback.cancel();
                    }
                });

                InstallMessage.show();
            } break;
            case InstallCallbackInterface.INSTALLATION_PROGRESS:
            {
                AlertDialog WaitMessage = new AlertDialog.Builder(mAppContext).create();
                WaitMessage.setTitle("OpenCV is not ready");
                WaitMessage.setMessage("Installation is in progress. Wait or exit?");
                WaitMessage.setCancelable(false); // This blocks the 'BACK' button
                WaitMessage.setButton(AlertDialog.BUTTON_POSITIVE, "Wait", new OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        callback.wait_install();
                    }
                });
                WaitMessage.setButton(AlertDialog.BUTTON_NEGATIVE, "Exit", new OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        callback.cancel();
                    }
                });

                WaitMessage.show();
            } break;
        }
    }

    void finish()
    {
        ((Activity) mAppContext).finish();
    }

    protected tahanian.mohsen.translate.camera.one.MainActivity_show_camera mAppContext;
    private final static String TAG = "OpenCVLoader/BaseLoaderCallback";