safedispatch-mobile/safeDispatch/src/main/java/com/safemobile/dispatch/LiveActivity.java

package com.safemobile.dispatch;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptor;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.safemobile.activities.AbstractLiveActivity;
import com.safemobile.activities.AbstractSDParentActivity;
import com.safemobile.adapters.VehiclesGridViewAdapter;
import com.safemobile.lib.AppParams;
import com.safemobile.lib.OperationCodes;
import com.safemobile.lib.SM;
import com.safemobile.lib.SuperVehicle;
import com.safemobile.lib.Vehicle;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Locale;
import java.util.Objects;

public class LiveActivity extends AbstractLiveActivity implements OnMapReadyCallback {

    private GoogleMap googleMap;

    /* Context Menu */
    private static final int MENU_ENABLE = 150;
    private static final int MENU_DISABLE = 151;
    private static final int MENU_REMOTE = 161;
    private static final int MENU_POLL = 154;
    private static final double LAT_OUTLIMIT = 91;
    private static final double LNG_OUTLIMIT = 181;
    private IconContextMenu iconContextMenu = null;

    /* Dialog */
    private Dialog loadingDialog;

    // Need handler for callbacks to the UI thread
    private final Handler myHandler = new Handler(Looper.getMainLooper());
    private Thread threadUI;

    /* Misc */
    private Context context;
    private Resources res;
    private Activity activity;

    /*  Visual Elements  */
    private ImageButton imageViewCheckAll;
    private Button displayButton;
    private boolean isFirstRun = true;
    private boolean isFirstMap = true;
    private boolean isAck = false;
    private boolean showVehicle = true;
    private int contextMenuPosition;
    private int vehStatus;
    private int position; // vehStatus = vehicle status received from apps

    /* Live Vehicle GridView */
    private GridView gridVehicle;
    private ArrayList<Vehicle> liveVehicle = new ArrayList<>();
    private ArrayList<Boolean> displayedVehicles = new ArrayList<>();
    private ArrayList<Boolean> disabledVehicles = new ArrayList<>();
    private VehiclesGridViewAdapter adapter;
    private final HashMap<Integer, ArrayList<SuperVehicle>> tableHashOverlay = new HashMap<>();

    //value poll
    private double latPoll = 0;
    private double lngPoll = 0;
    private ArrayList<Marker> markers = new ArrayList<>();


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setSavedInstanceState(savedInstanceState);
        // get parentTab
        setParentTab((AbstractSDParentActivity) getParent());
        try {
            ((TabLayoutActivity) getParentTab()).setLiveActivity(this);
        } catch (Exception ignored) {
            // ignored
        }
        context = this;
        activity = this;
        res = getResources();

        Locale locale = new Locale(AppParams.LANGUAGETMP);
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());

        // get mapView only when creating first time
        if (isFirstMap) {
            setContentView(R.layout.tablive);
            isFirstMap = false;
        }

        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        if (mapFragment != null) {
            mapFragment.getMapAsync(this);
        }

        // create on vehicle long click menu
        createIconContextMenu();

        // image View for changing map type satellite or map
        ImageView changeMapTypeImageView = findViewById(R.id.changeMapType);
        changeMapTypeImageView.setOnClickListener(v -> {
            if (googleMap.getMapType() == GoogleMap.MAP_TYPE_SATELLITE) {
                changeMapTypeImageView.setImageResource(R.drawable.satellite);
                googleMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
            } else {
                changeMapTypeImageView.setImageResource(R.drawable.map);
                googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
            }
        });

        ImageView changeTrafficImageView = findViewById(R.id.changeTraffic);
        changeTrafficImageView.setOnClickListener(v -> {
            if (googleMap.isTrafficEnabled()) {
                changeTrafficImageView.setImageResource(R.drawable.traffic_off);
                googleMap.setTrafficEnabled(false);
            } else {
                changeTrafficImageView.setImageResource(R.drawable.traffic);
                googleMap.setTrafficEnabled(true);
            }
        });

        // change tab header font
        TextView textView1 = findViewById(R.id.textView1);
        textView1.setTypeface(Typeface.createFromAsset(getAssets(), "Sketch_Block.ttf"));
        textView1.setTextSize(24);

        // get grid view and set empty data adapter
        gridVehicle = findViewById(R.id.gridVehicle);

        if (AppParams.DEMO) {
            disabledVehicles = new ArrayList<>();
            for (Vehicle veh : getParentTab().getAllVehicle())
                disabledVehicles.add(!veh.status);
        }


        adapter = new VehiclesGridViewAdapter(activity, context, getParentTab().getAllVehicle(), disabledVehicles);
        adapter.notifyDataSetChanged();
        gridVehicle.setAdapter(adapter);

        // get vehicle display click
        gridVehicle.setOnItemClickListener((parent, view, position, id) -> {
            threadUI = new Thread(() -> {
                myHandler.post(() -> itemClick(position, view));
                threadUI.interrupt();
            });
            threadUI.start();
        });

        // get vehicle menu creation
        gridVehicle.setOnItemLongClickListener((adapterView, view, i, l) -> {
            contextMenuPosition = position;
            iconContextMenu.createMenu(getString(R.string.options)).show();
            return true;
        });

        LinearLayout slideLayout = findViewById(R.id.slidelayout);
        ImageView slideLayoutImageView = findViewById(R.id.slideLayoutImage);
        LinearLayout linearLayoutVehicles = findViewById(R.id.layoutBig);
        slideLayout.setOnClickListener(v -> {
            if (showVehicle) {
                linearLayoutVehicles.setVisibility(View.GONE);
                slideLayoutImageView.setImageResource(R.drawable.arrow_right);
                showVehicle = false;
            } else {
                linearLayoutVehicles.setVisibility(View.VISIBLE);
                slideLayoutImageView.setImageResource(R.drawable.arrow_left);
                showVehicle = true;
            }
        });

        imageViewCheckAll = findViewById(R.id.imageCheckAll);
        imageViewCheckAll.setSelected(false);
        imageViewCheckAll.setOnClickListener(arg0 -> {
            for (int i = 0; i < displayedVehicles.size(); i++)
                displayedVehicles.set(i, true);

            adapter.changeDisplayAll(!imageViewCheckAll.isSelected());


            VehiclesGridViewAdapter.ViewHolder viewLive = (VehiclesGridViewAdapter.ViewHolder) gridVehicle.getChildAt(0).getTag();

            if (!imageViewCheckAll.isSelected())
                viewLive.imgViewChecked.setImageResource(R.drawable.checked);
            else
                viewLive.imgViewChecked.setImageResource(R.drawable.unchecked);

            Enumeration<Long> keyList = getParentTab().getSuperVehHash().keys();
            while (keyList.hasMoreElements()) {
                (Objects.requireNonNull(getParentTab().getSuperVehHash().get(keyList.nextElement()))).needUpdate = true;
            }

            // change button title
            if (!imageViewCheckAll.isSelected()) {
                imageViewCheckAll.setSelected(true);
                imageViewCheckAll.setBackgroundResource(R.drawable.check_all);
                displayButton.setText(getString(R.string.hideAll));
                // set all vehicles to be displayed
                for (int i = 0; i < displayedVehicles.size(); i++)
                    displayedVehicles.set(i, true);
            } else {
                imageViewCheckAll.setSelected(false);
                imageViewCheckAll.setBackgroundResource(R.drawable.uncheck_all);
                displayButton.setText(getString(R.string.displayAll));
                // set all vehicles to not be displayed
                for (int i = 0; i < displayedVehicles.size(); i++)
                    displayedVehicles.set(i, false);
            }

            // refresh UI
            displayVehicle(true, LAT_OUTLIMIT, LNG_OUTLIMIT);
        });

        displayButton = findViewById(R.id.buttonDisplay);
        displayButton.setText(getString(R.string.displayAll));


        displayButton.setOnClickListener(v -> {
            // set all displayed vehicles to true

            for (int i = 0; i < displayedVehicles.size(); i++)
                displayedVehicles.set(i, true);

            Enumeration<Long> keyList = getParentTab().getSuperVehHash().keys();
            while (keyList.hasMoreElements())
                (Objects.requireNonNull(getParentTab().getSuperVehHash().get(keyList.nextElement()))).needUpdate = true;

            // change button title
            if (displayButton.getText().toString().equals(getString(R.string.displayAll))) {
                displayButton.setText(getString(R.string.hideAll));
                // set all vehicles to be displayed
                for (int i = 0; i < displayedVehicles.size(); i++)
                    displayedVehicles.set(i, true);
            } else {
                displayButton.setText(getString(R.string.displayAll));
                // set all vehicles to not be displayed
                for (int i = 0; i < displayedVehicles.size(); i++)
                    displayedVehicles.set(i, false);
            }

            // refresh UI
            displayVehicle(true, LAT_OUTLIMIT, LNG_OUTLIMIT);
        });

        // display Vehicles
        displayVehicle(true, LAT_OUTLIMIT, LNG_OUTLIMIT);

        // register to receive broadcasts
        registerBroadcastIntents();
    }

    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    @Override
    public void onMapReady(@NonNull GoogleMap googleMap) {
        this.googleMap = googleMap;
        GoogleMapsInfoBubble infoBubble = new GoogleMapsInfoBubble(getLayoutInflater(), this, getParentTab().getSuperVehHash());
        this.googleMap.setInfoWindowAdapter(infoBubble);
    }


    @Override
    public void onBackPressed() {
        // cancel loading dialog if showing
        if (loadingDialog.isShowing()) {
            cancelLoadingDialog();
        } else {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage(getString(R.string.exit))
                    .setCancelable(false)
                    .setNeutralButton(getString(R.string.logout), (dialog, id) -> getParentTab().whenBackPressed(AppParams.ActivityResult.logout))
                    .setPositiveButton(getString(R.string.ext), (dialog, id) -> getParentTab().whenBackPressed(AppParams.ActivityResult.exit))
                    .setNegativeButton(getString(R.string.cancel), (dialog, id) -> dialog.cancel());
            AlertDialog alert = builder.create();
            alert.show();
        }
    }

    @Override
    public void onStart() {
        super.onStart();
        if (isFirstRun) {
            // show loading dialog
            showLoadingDialog("Getting vehicles from database...");
            // send liveActivity
            getParentTab().setLiveActivity((AbstractLiveActivity) activity);
            // get all vehicles
            isAck = false;
            // start a thread to wait 3 seconds for ack
            new Thread(() -> {
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                    SM.Exception(e.toString());
                    // Restore interrupted state
                    Thread.currentThread().interrupt();
                }
                // if not getVehicle not isAck
                if (!isAck)
                    myHandler.post(cancelLoadingDialogRUN);
            }).start();

            SM.Debug("GetVehs");
            isFirstRun = false;
        }
    }

    @Override
    public void onPause() {
        super.onPause();
        SM.Debug("onPause");
    }

    @Override
    public void onResume() {
        super.onResume();

        // clear previous vehicles
        SM.Debug("onResume");
        displayVehicle(true, LAT_OUTLIMIT, LNG_OUTLIMIT);
    }

    final Runnable cancelLoadingDialogRUN = LiveActivity.this::cancelLoadingDialog;

    // cancel loading dialog and show sending error message
    private void cancelLoadingDialog() {
        // cancel loading dialog
        try {
            loadingDialog.cancel();
        } catch (Exception ex) {
            SM.Exception(ex.toString());
        }
        if (!isAck) {
            // show connection error
            Toast.makeText(context, "Could not get Vehicles... ", Toast.LENGTH_SHORT).show();
        }
    }

    public void createIconContextMenu() {
        iconContextMenu = new IconContextMenu(this, 1);
        iconContextMenu.addItem(res, R.string.enable, R.drawable.enable, MENU_ENABLE);
        iconContextMenu.addItem(res, R.string.disable, R.drawable.disable, MENU_DISABLE);
        iconContextMenu.addItem(res, R.string.poll, R.drawable.poll, MENU_POLL);

        //set onclick listener for context menu
        iconContextMenu.setOnClickListener(menuId -> {
            int radioCode = 30;
            switch (menuId) {
                case MENU_ENABLE: {
                    // send change to AppServer
                    optionForUnit(radioCode, MENU_ENABLE, liveVehicle.get(contextMenuPosition).id + "");
                    if (AppParams.DEMO)
                        vehicleStatusReceived(liveVehicle.get(contextMenuPosition).id, 101, 1);
                    SM.Debug("MENU: Enable for " + liveVehicle.get(contextMenuPosition).id);
                    break;
                }
                case MENU_DISABLE: {
                    // send change to AppServer
                    optionForUnit(radioCode, MENU_DISABLE, liveVehicle.get(contextMenuPosition).id + "");
                    if (AppParams.DEMO)
                        vehicleStatusReceived(liveVehicle.get(contextMenuPosition).id, 101, 0);
                    SM.Debug("MENU: Disable for " + liveVehicle.get(contextMenuPosition).id);
                    break;
                }
                case MENU_REMOTE: {
                    // send change to AppServer
                    optionForUnit(radioCode, MENU_REMOTE, liveVehicle.get(contextMenuPosition).id + "");
                    SM.Debug("MENU: Remote for " + liveVehicle.get(contextMenuPosition).id);
                    break;
                }
                case MENU_POLL: {
                    // send change to AppServer
                    optionForUnit(radioCode, MENU_POLL, liveVehicle.get(contextMenuPosition).id + "");
                    if (AppParams.DEMO) {
                        getParentTab().setImei(liveVehicle.get(contextMenuPosition).sc_id + "");
                        getParentTab().updateDemoPosition();
                        getParentTab().updateResultsPollInUi("realpha");
                    }

                    SM.Debug("MENU: P for " + liveVehicle.get(contextMenuPosition).id);
                    break;
                }
                default:
                    throw new IllegalStateException("Unexpected value: " + menuId);
            }
        });
    }

    public void displayVehicle(boolean withZoom, double latZoom, double lngZoom) {
        if (googleMap != null) {
            String openWindow = "";
            for (Marker marker : markers) {
                if (marker.isInfoWindowShown()) {
                    openWindow = marker.getTitle();
                }
            }
            googleMap.clear();

            for (int i = 0; i < displayedVehicles.size(); i++) {
                if (displayedVehicles.get(i)) {
                    SuperVehicle tmpSuper = getParentTab().getSuperVehHash().get(Long.valueOf(liveVehicle.get(i).imei));

                    if (tmpSuper != null) {
                        LatLng newLocation = new LatLng(tmpSuper.lat, tmpSuper.lng);
                        MarkerOptions markerOptions = new MarkerOptions().position(newLocation).title(liveVehicle.get(i).imei);

                        BitmapDescriptor markerIcon = getProperBitmap(tmpSuper.getLargeIcon(), tmpSuper.name);
                        markerOptions.icon(markerIcon);

                        Marker marker = this.googleMap.addMarker(markerOptions);
                        if (openWindow.equals(marker.getTitle()))
                            marker.showInfoWindow();

                        markers.add(marker);
                    }
                }
            }
        }
    }

    public void showOpenedBalloon(boolean demo) {
        //TODO: add show balloon
    }

    private BitmapDescriptor getProperBitmap(int largeIcon, String text) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), largeIcon);
        Bitmap textBitmap = getTextAsDrawable(this, text);
        Bitmap b3 = overlay(bitmap, textBitmap);
        return BitmapDescriptorFactory.fromBitmap(b3);
    }

    public static Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
        int maxWidth = Math.max(bmp1.getWidth(), bmp2.getWidth());

        Bitmap bmOverlay = Bitmap.createBitmap(maxWidth, bmp1.getHeight() + bmp2.getHeight(), bmp1.getConfig());
        Canvas canvas = new Canvas(bmOverlay);
        canvas.drawBitmap(bmp1, new Matrix(), null);
        canvas.drawBitmap(bmp2, 0, bmp1.getHeight(), null);
        bmp1.recycle();
        bmp2.recycle();
        return bmOverlay;
    }

    public Bitmap getTextAsDrawable(Context context, String text) {
        Typeface tf = Typeface.create("Helvetica", Typeface.BOLD);

        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setColor(Color.WHITE);
        paint.setTypeface(tf);
        paint.setTextSize(convertToPixels(context, 16));

        Rect textRect = new Rect();
        paint.getTextBounds(text, 0, text.length(), textRect);

        Bitmap bitmap = Bitmap.createBitmap(textRect.width(), textRect.height() + 5,
                Bitmap.Config.ARGB_8888);

        Canvas canvas = new Canvas(bitmap);
        paint.setColor(getResources().getColor(R.color.cardview_dark_background));
        canvas.drawRect(0, 0, bitmap.getWidth(), bitmap.getHeight(), paint);


        float scale = context.getResources().getDisplayMetrics().density;
        // text color - #3D3D3D
        paint.setColor(Color.rgb(255, 255, 255));
        // text size in pixels

        // draw text to the Canvas center
        Rect bounds = new Rect();
        paint.getTextBounds(text, 0, text.length(), bounds);
        int x = (bitmap.getWidth() - bounds.width()) / 2;
        int y = (bitmap.getHeight() + bounds.height()) / 2;

        canvas.drawText(text, x, y, paint);

        return bitmap;
    }

    public int convertToPixels(Context context, int nDP) {
        final float conversionScale = context.getResources().getDisplayMetrics().density;
        return (int) ((nDP * conversionScale) + 0.5f);
    }

    public void showLoadingDialog(String message) {
        loadingDialog = new Dialog(context);
        loadingDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        loadingDialog.setContentView(R.layout.dialogloading);
        loadingDialog.setCancelable(true);
        loadingDialog.setCanceledOnTouchOutside(false);

        Button cancel = loadingDialog.findViewById(R.id.buttonCancel);
        cancel.setVisibility(View.GONE);
        TextView textView1 = loadingDialog.findViewById(R.id.textView1);
        textView1.setText(message);

        loadingDialog.show();
    }

    // save Vehicles
    @Override
    public void vehiclesReceived(ArrayList<Vehicle> list) {

        SM.Debug("vehiclesReceived");
        isAck = true;
        liveVehicle = list;
        disabledVehicles = new ArrayList<>();
        displayedVehicles = new ArrayList<>();
        // set displayed to false and add icons to hashTable
        int i = 0;
        SM.Debug("DISPLAY LIVE VEHICLE");
        for (Vehicle veh : list) {

            SM.Debug(veh.toString());
            liveVehicle.get(i).id = veh.sc_id;
            i++;
            // set vehicle to false
            displayedVehicles.add(AppParams.DEMO && (veh.sc_id == 101 || veh.sc_id == 102));
            // set disable to false
            disabledVehicles.add(!veh.status);

            // add vehicle to hash Table according to driver_id
            if (tableHashOverlay.get((int) veh.driver_id) == null) {
                ArrayList<SuperVehicle> array = new ArrayList<>();
                SuperVehicle superVehicle = new SuperVehicle(veh.sc_id, veh.imei, veh.lp, veh.name, veh.driver_id, veh.time_route, veh.GPS_reporting_interval, veh.is_stolen);
                array.add(superVehicle);
                tableHashOverlay.put((int) veh.driver_id, array);
            } else {
                // another vehicle with same driver_id exists
                ArrayList<SuperVehicle> array = tableHashOverlay.get((int) veh.driver_id);
                SuperVehicle superVehicle = new SuperVehicle(veh.sc_id, veh.imei, veh.lp, veh.name, veh.driver_id, veh.time_route, veh.GPS_reporting_interval, veh.is_stolen);
                // add vehicle to array
                if (array != null) {
                    array.add(superVehicle);
                }
            }
        }

        // set adapter
        adapter = new VehiclesGridViewAdapter(activity, context, list, disabledVehicles);
        adapter.notifyDataSetChanged();

        // Update UI
        myHandler.post(updateResultsRUN);

        // hide loading dialog
        loadingDialog.cancel();
        if (!AppParams.DEMO)
            getLastPos();
    }

    // Create runnable for posting
    final Runnable updateResultsRUN = this::updateResultsUI;

    // show vehicles in gridView
    private void updateResultsUI() {
        gridVehicle.setAdapter(adapter);
        try {
            // hide loading dialog
            loadingDialog.cancel();
        } catch (Exception e) {
            SM.Exception(e.toString());
        }
    }

    @Override
    public void refreshMap() {
        // Update UI
        myHandler.post(updateMapResults);
    }

    @Override
    public void pollReceived(int position, double lat, double lng) {
        // Update UI
        latPoll = lat;
        lngPoll = lng;
        this.position = position;
        myHandler.post(updatePollResults);
    }

    @Override
    public void vehicleStatusReceived(long imei, int opCode, int status) {
        vehStatus = status;
        SM.Debug("UpdateOptions from APP with-> imei: " + imei + " | opCode: " + opCode + " | status: " + vehStatus);
        contextMenuPosition = getPositionFromImei(imei);
        // Update UI
        myHandler.post(updateOptionsRUN);
    }

    @Override
    public void emergencyAlarmReceived(int position, double lat, double lng) {
        pollReceived(position,lat,lng);
    }

    public void updatePosition(int pos) {
        contextMenuPosition = pos;
    }

    // Create runnable for posting
    final Runnable updateMapResults = () -> displayVehicle(false, LAT_OUTLIMIT, LNG_OUTLIMIT);

    // Create runnable for posting
    final Runnable updatePollResults = () -> {
        if (position != -1) {
            SM.Debug("updatePosition :" + position + " last value:" + displayedVehicles.get(position));
            // change in adapter
            adapter.changeDisplayed(position, true);
        }

        displayVehicle(true, latPoll, lngPoll); };

    // Create runnable for posting
    final Runnable updateOptionsRUN = this::updateOptionsUI;

    private void updateOptionsUI() {
        SM.Debug("REFRESHDisableEnable" + (Boolean.TRUE.equals(disabledVehicles.get(contextMenuPosition)) ? "true" : "false"));
        // change Enable/Disable in adapter
        adapter.changeDisabled(contextMenuPosition, disabledVehicles.get(contextMenuPosition));
    }

    /**
     * visual modifications when a vehicle is clicked
     *
     * @param position position in grid that was clicked
     * @param view     View in which will do the modifications
     */
    private void itemClick(int position, View view) {
        // change displayed state
        displayedVehicles.set(position, !Boolean.TRUE.equals(displayedVehicles.get(position)));

        // change in the adapter
        adapter.changeDisplayed(position, displayedVehicles.get(position));

        // change check image for selected value
        VehiclesGridViewAdapter.ViewHolder viewLive = (VehiclesGridViewAdapter.ViewHolder) view.getTag();

        if (Boolean.TRUE.equals(displayedVehicles.get(position)))
            viewLive.imgViewChecked.setImageResource(R.drawable.checked);
        else
            viewLive.imgViewChecked.setImageResource(R.drawable.unchecked);

        // check if all values are identical
        boolean identical = true;
        for (Boolean displ : displayedVehicles)
            if (!Objects.equals(displ, displayedVehicles.get(0))) {
                identical = false;
                break;
            }

        // change image when all values are identical
        if (identical && Boolean.TRUE.equals(displayedVehicles.get(0))) {
            imageViewCheckAll.setSelected(true);
            imageViewCheckAll.setBackgroundResource(R.drawable.check_all);
        } else if (identical && Boolean.TRUE.equals(!displayedVehicles.get(0))) {
            imageViewCheckAll.setSelected(false);
            imageViewCheckAll.setBackgroundResource(R.drawable.uncheck_all);
        }

        // display vehicle
        displayVehicle(true, LAT_OUTLIMIT, LNG_OUTLIMIT);
    }

    /**
     * get last position for all vehicles
     */
    private void getLastPos() {
        getParentTab().executeNetworkStuff(new String[]{OperationCodes.GetLastPositions + "", AppParams.USERID + ""});
    }

    /**
     * send a command that enable/disable a vehicle or request a poll
     *
     * @param radioCode is a hardcoded values set to 30
     * @param opCode    the operation code. It can be :
     *                  MENU_ENABLE = 150,
     *                  MENU_DISABLE = 151,
     *                  MENU_REMOTE = 161,
     *                  MENU_POLL = 154;
     * @param scId      vehicle imei for which we do the operation
     */
    public void optionForUnit(int radioCode, int opCode, String scId) {
        // last values is set to 0 for disable and 1 for others
        getParentTab().executeNetworkStuff(new String[]{OperationCodes.Option4Unit + "", radioCode + "", (opCode == MENU_DISABLE ? MENU_ENABLE : opCode) + "", scId,
                (opCode == MENU_DISABLE ? 0 : 1) + ""});
    }

    /**
     * return the position in the grid for a Vehicle specified by imei
     *
     * @param imei vehicle's imei
     */
    private int getPositionFromImei(long imei) {
        int positionFromImei = -1;
        for (int i = 0; i < liveVehicle.size(); i++)
            if (liveVehicle.get(i).imei.equalsIgnoreCase(imei + ""))
                positionFromImei = i;
        SM.Debug("Position: " + positionFromImei);
        return positionFromImei;
    }

    /**
     * Register for broadcasts
     */
    private void registerBroadcastIntents() {
        // zone and channel change intent
        IntentFilter intentFilter = new IntentFilter(OperationCodes.UNIT_STATUS_UPDATE + "");
        this.registerReceiver(mReceiver, intentFilter);
    }

    //The BroadcastReceiver that listens for Notification broadcasts
    public final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {

            final String action = intent.getAction();

            if (action.equals(OperationCodes.UNIT_STATUS_UPDATE + "")) {
                try {
                    final String[] extra = intent.getStringExtra("unitStatus").split("#");

                    SM.Debug("extra has " + extra.length + " objects");
                    Toast.makeText(context, "Unit was " + (Integer.parseInt(extra[1]) == 0 ? "DISABLED" : "ENABLED"), Toast.LENGTH_LONG).show();

                    myHandler.post(() -> {
                        vehStatus = Integer.parseInt(extra[1]);
                        contextMenuPosition = getPositionFromImei(Integer.parseInt(extra[0]));
                        disabledVehicles.remove(contextMenuPosition);
                        // invert logic is used
                        disabledVehicles.add(contextMenuPosition, vehStatus != 1);
                        adapter.changeDisabled(contextMenuPosition, disabledVehicles.get(contextMenuPosition));
                    });
                } catch (Exception ex) {
                    SM.Exception("Exception in live BroadCastReceived" + ex.toString());
                }
            }
        }
    };

    @Override
    public GoogleMap getMap() {
        return googleMap;
    }
}