[android] Allow customization of the first (OM logo / About) button

android/app/src/main/java/app/organicmaps/MwmActivity.java

@@ -7,6 +7,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.res.ColorStateList;
 import android.content.res.Configuration;
 import android.graphics.Color;
 import android.location.Location;
@@ -99,6 +100,9 @@ import app.organicmaps.settings.DrivingOptionsActivity;
 import app.organicmaps.settings.RoadType;
 import app.organicmaps.settings.SettingsActivity;
 import app.organicmaps.settings.UnitLocale;
+import app.organicmaps.universalbuttons.UniversalButton;
+import app.organicmaps.universalbuttons.UniversalButtonsHolder;
+import app.organicmaps.universalbuttons.UniversalToggleButton;
 import app.organicmaps.util.Config;
 import app.organicmaps.util.LocationUtils;
 import app.organicmaps.util.PowerManagment;
@@ -116,6 +120,7 @@ import app.organicmaps.widget.placepage.PlacePageController;
 import app.organicmaps.widget.placepage.PlacePageData;
 import app.organicmaps.widget.placepage.PlacePageViewModel;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
 import java.util.ArrayList;
 import java.util.Objects;
@@ -127,6 +132,9 @@ import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static app.organicmaps.location.LocationState.FOLLOW;
 import static app.organicmaps.location.LocationState.FOLLOW_AND_ROTATE;
 import static app.organicmaps.location.LocationState.LOCATION_TAG;
+import static app.organicmaps.universalbuttons.UniversalButtonsHolder.BUTTON_ADD_PLACE_CODE;
+import static app.organicmaps.universalbuttons.UniversalButtonsHolder.BUTTON_RECORD_TRACK_CODE;
+import static app.organicmaps.universalbuttons.UniversalButtonsHolder.BUTTON_SETTINGS_CODE;
 import static app.organicmaps.util.PowerManagment.POWER_MANAGEMENT_TAG;
 
 public class MwmActivity extends BaseMwmFragmentActivity
@@ -200,6 +208,8 @@ public class MwmActivity extends BaseMwmFragmentActivity
 
   private int mNavBarHeight;
 
+  private UniversalButtonsHolder buttonsHolder;
+
   private PlacePageViewModel mPlacePageViewModel;
   private MapButtonsViewModel mMapButtonsViewModel;
   private MapButtonsController.LayoutMode mPreviousMapLayoutMode;
@@ -232,6 +242,8 @@ public class MwmActivity extends BaseMwmFragmentActivity
   @NonNull
   private ActivityResultLauncher<Intent> mPowerSaveSettings;
   @NonNull
+  private ActivityResultLauncher<Intent> mSettingsLauncher;
+  @NonNull
   private boolean mPowerSaveDisclaimerShown = false;
 
   @SuppressWarnings("NotNullFieldNotInitialized")
@@ -415,6 +427,11 @@ public class MwmActivity extends BaseMwmFragmentActivity
     BookmarkCategoriesActivity.start(this);
   }
 
+  private void onAddPlace()
+  {
+    showPositionChooserForEditor(false, false);
+  }
+
   private void showHelp()
   {
     Intent intent = new Intent(this, HelpActivity.class);
@@ -555,6 +572,9 @@ public class MwmActivity extends BaseMwmFragmentActivity
     mPowerSaveSettings = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(),
         this::onPowerSaveResult);
 
+    mSettingsLauncher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(),
+        this::onSettingsResult);
+
     mShareLauncher = SharingUtils.RegisterLauncher(this);
 
     mDisplayManager = DisplayManager.from(this);
@@ -586,6 +606,22 @@ public class MwmActivity extends BaseMwmFragmentActivity
       onRenderingInitializationFinished();
   }
 
+  private void onSettingsResult(ActivityResult activityResult)
+  {
+    if (activityResult.getResultCode() == Activity.RESULT_OK)
+    {
+      Intent data = activityResult.getData();
+      if (data != null && data.hasExtra(UniversalButtonsHolder.KEY_PREF_UNIVERSAL_BUTTON))
+      {
+        MapButtonsController mMapButtonsController = (MapButtonsController) getSupportFragmentManager().findFragmentById(R.id.map_buttons);
+        if (mMapButtonsController != null)
+        {
+          mMapButtonsController.reloadUniversalButton(buttonsHolder.getActiveButton());
+        }
+      }
+    }
+  }
+
   private void refreshLightStatusBar()
   {
     UiUtils.setLightStatusBar(this, !(
@@ -781,16 +817,121 @@ public class MwmActivity extends BaseMwmFragmentActivity
 
   private void initNavigationButtons()
   {
+    prepareNavigationButtons();
     initNavigationButtons(mMapButtonsViewModel.getLayoutMode().getValue());
   }
 
+  private void prepareNavigationButtons()
+  {
+    buttonsHolder = UniversalButtonsHolder.getInstance(this);
+    buttonsHolder.registerDefaultUniversalButtons(this);
+    buttonsHolder.registerButton(new UniversalButton()
+    {
+      @Override
+      public String getCode()
+      {
+        return BUTTON_ADD_PLACE_CODE;
+      }
+
+      @Override
+      public String getPrefsName()
+      {
+        return getString(R.string.placepage_add_place_button);
+      }
+
+      @Override
+      public void drawIcon(FloatingActionButton imageView)
+      {
+        imageView.setImageResource(R.drawable.ic_plus);
+      }
+
+      @Override
+      public void onClick(FloatingActionButton universalButtonView)
+      {
+        onAddPlace();
+      }
+    });
+    buttonsHolder.registerButton(new UniversalButton()
+    {
+      @Override
+      public String getCode()
+      {
+        return BUTTON_SETTINGS_CODE;
+      }
+
+      @Override
+      public String getPrefsName()
+      {
+        return getString(R.string.settings);
+      }
+
+      @Override
+      public void drawIcon(FloatingActionButton imageView)
+      {
+        imageView.setImageResource(R.drawable.ic_settings);
+      }
+
+      @Override
+      public void onClick(FloatingActionButton universalButtonView)
+      {
+        onOpenSettings();
+      }
+    });
+
+    buttonsHolder.registerButton(new UniversalToggleButton()
+    {
+      private boolean isRecording = TrackRecorder.nativeIsTrackRecordingEnabled();
+
+      @Override
+      public void setChecked(boolean checked)
+      {
+        isRecording = checked;
+      }
+
+      @Override
+      public String getCode()
+      {
+        return BUTTON_RECORD_TRACK_CODE;
+      }
+
+      @Override
+      public String getPrefsName()
+      {
+        return getString(R.string.start_track_recording);
+      }
+
+      @Override
+      public void drawIcon(FloatingActionButton imageView)
+      {
+        imageView.setImageResource(R.drawable.ic_track_recording_off);
+
+        int color = isRecording
+            ? Color.parseColor("#0057ff")
+            : ThemeUtils.getColor(MwmActivity.this, R.attr.iconTint);
+
+        ColorStateList colorStateList = ColorStateList.valueOf(color);
+        imageView.setImageTintList(colorStateList);
+      }
+
+      @Override
+      public void onClick(FloatingActionButton universalButtonView)
+      {
+        onTrackRecordingOptionSelected();
+        drawIcon(universalButtonView);
+      }
+    });
+  }
+
   private void initNavigationButtons(MapButtonsController.LayoutMode layoutMode)
   {
     // Recreate the navigation buttons with the correct layout when it changes
     if (mPreviousMapLayoutMode != layoutMode)
     {
+      MapButtonsController mapButtonsController = new MapButtonsController();
+      mapButtonsController.setUniversalButton(buttonsHolder.getActiveButton());
+
       FragmentTransaction transaction = getSupportFragmentManager()
-          .beginTransaction().replace(R.id.map_buttons, new MapButtonsController());
+          .beginTransaction().replace(R.id.map_buttons, mapButtonsController);
       transaction.commit();
       mPreviousMapLayoutMode = layoutMode;
     }
@@ -2287,7 +2428,7 @@ public class MwmActivity extends BaseMwmFragmentActivity
   public void onAddPlaceOptionSelected()
   {
     closeFloatingPanels();
-    showPositionChooserForEditor(false, false);
+    onAddPlace();
   }
 
   public void onDownloadMapsOptionSelected()
@@ -2304,9 +2445,14 @@ public class MwmActivity extends BaseMwmFragmentActivity
 
   public void onSettingsOptionSelected()
   {
-    Intent intent = new Intent(this, SettingsActivity.class);
     closeFloatingPanels();
-    startActivity(intent);
+    onOpenSettings();
+  }
+
+  private void onOpenSettings()
+  {
+    Intent intent = new Intent(this, SettingsActivity.class);
+    mSettingsLauncher.launch(intent);
   }
 
   private boolean startTrackRecording()

android/app/src/main/java/app/organicmaps/maplayer/MapButtonsController.java

@@ -3,6 +3,7 @@ package app.organicmaps.maplayer;
 import android.animation.ArgbEvaluator;
 import android.animation.ObjectAnimator;
 import android.content.Context;
+import android.content.res.ColorStateList;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.text.TextUtils;
@@ -21,6 +22,7 @@ import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
+
 import app.organicmaps.Framework;
 import app.organicmaps.MwmActivity;
 import app.organicmaps.R;
@@ -31,11 +33,15 @@ import app.organicmaps.maplayer.isolines.IsolinesManager;
 import app.organicmaps.maplayer.subway.SubwayManager;
 import app.organicmaps.maplayer.traffic.TrafficManager;
 import app.organicmaps.routing.RoutingController;
+import app.organicmaps.universalbuttons.UniversalButton;
+import app.organicmaps.universalbuttons.UniversalToggleButton;
 import app.organicmaps.util.Config;
+import app.organicmaps.util.ThemeUtils;
 import app.organicmaps.util.UiUtils;
 import app.organicmaps.util.WindowInsetUtils;
 import app.organicmaps.widget.menu.MyPositionButton;
 import app.organicmaps.widget.placepage.PlacePageViewModel;
+
 import com.google.android.material.badge.BadgeDrawable;
 import com.google.android.material.badge.BadgeUtils;
 import com.google.android.material.badge.ExperimentalBadgeUtils;
@@ -75,9 +81,12 @@ public class MapButtonsController extends Fragment
   private final Observer<Boolean> mTrackRecorderObserver = (enable) -> {
     updateMenuBadge(enable);
     showButton(enable, MapButtons.trackRecordingStatus);
+    updateUniversalButtonState(enable);
   };
   private final Observer<Integer> mTopButtonMarginObserver = this::updateTopButtonsMargin;
 
+  private UniversalButton mUniversalButton;
+
   @Nullable
   @Override
   public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
@@ -98,27 +107,15 @@ public class MapButtonsController extends Fragment
     mInnerRightButtonsFrame = mFrame.findViewById(R.id.map_buttons_inner_right);
     mBottomButtonsFrame = mFrame.findViewById(R.id.map_buttons_bottom);
 
-    final FloatingActionButton helpButton = mFrame.findViewById(R.id.help_button);
-    if (helpButton != null)
-    {
-      if (Config.isNY() && !TextUtils.isEmpty(Config.getDonateUrl(requireContext())))
-        helpButton.setImageResource(R.drawable.ic_christmas_tree);
-//      else
-//      {
-//        helpButton.setImageResource(R.drawable.ic_launcher);
-//      }
-//      // Keep this button colorful in normal theme.
-//      if (!ThemeUtils.isNightTheme(requireContext()))
-//        helpButton.getDrawable().setTintList(null);
-    }
+    mButtonsMap = new HashMap<>();
+
+    initBottomButtons();
 
     final View zoomFrame = mFrame.findViewById(R.id.zoom_buttons_container);
     mFrame.findViewById(R.id.nav_zoom_in)
           .setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.zoomIn));
     mFrame.findViewById(R.id.nav_zoom_out)
           .setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.zoomOut));
-    final View bookmarksButton = mFrame.findViewById(R.id.btn_bookmarks);
-    bookmarksButton.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.bookmarks));
     final View myPosition = mFrame.findViewById(R.id.my_position);
     mNavMyPosition = new MyPositionButton(myPosition, (v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.myPosition));
 
@@ -133,12 +130,55 @@ public class MapButtonsController extends Fragment
     mTrackRecordingStatusButton = mFrame.findViewById(R.id.track_recording_status);
     if (mTrackRecordingStatusButton != null)
       mTrackRecordingStatusButton.setOnClickListener(view -> mMapButtonClickListener.onMapButtonClick(MapButtons.trackRecordingStatus));
-    final View menuButton = mFrame.findViewById(R.id.menu_button);
+
+    mSearchWheel = new SearchWheel(mFrame,
+                                   (v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.search),
+                                   (v) -> mMapButtonClickListener.onSearchCanceled(),
+                                   mMapButtonsViewModel);
+
+    // Used to get the maximum height the buttons will evolve in
+    mFrame.addOnLayoutChangeListener(new MapButtonsController.ContentViewLayoutChangeListener(mFrame));
+
+    mButtonsMap.put(MapButtons.zoom, zoomFrame);
+    mButtonsMap.put(MapButtons.myPosition, myPosition);
+
+    if (mToggleMapLayerButton != null)
+      mButtonsMap.put(MapButtons.toggleMapLayer, mToggleMapLayerButton);
+    if (mTrackRecordingStatusButton != null)
+      mButtonsMap.put(MapButtons.trackRecordingStatus, mTrackRecordingStatusButton);
+    showButton(false, MapButtons.trackRecordingStatus);
+    return mFrame;
+  }
+
+  private void initBottomButtons()
+  {
+    // universal button
+    applyUniversalButton();
+
+    // bookmarks button
+    View bookmarksButton = mFrame.findViewById(R.id.btn_bookmarks);
+    if (bookmarksButton != null)
+    {
+      bookmarksButton.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.bookmarks));
+      mButtonsMap.put(MapButtons.bookmarks, bookmarksButton);
+    }
+
+    // search button
+    View searchButton = mFrame.findViewById(R.id.btn_search);
+    if (searchButton != null)
+    {
+      searchButton.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.bookmarks));
+      mButtonsMap.put(MapButtons.search, searchButton);
+    }
+
+    // menu button
+    View menuButton = mFrame.findViewById(R.id.menu_button);
     if (menuButton != null)
     {
       menuButton.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.menu));
       // This hack is needed to show the badge on the initial startup. For some reason, updateMenuBadge does not work from onResume() there.
-      menuButton.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+      menuButton.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener()
+      {
         @Override
         public void onGlobalLayout()
         {
@@ -146,35 +186,49 @@ public class MapButtonsController extends Fragment
           menuButton.getViewTreeObserver().removeOnGlobalLayoutListener(this);
         }
       });
-    }
-    if (helpButton != null)
-      helpButton.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.help));
-
-    mSearchWheel = new SearchWheel(mFrame,
-                                   (v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.search),
-                                   (v) -> mMapButtonClickListener.onSearchCanceled(),
-                                   mMapButtonsViewModel);
-    final View searchButton = mFrame.findViewById(R.id.btn_search);
-
-    // Used to get the maximum height the buttons will evolve in
-    mFrame.addOnLayoutChangeListener(new MapButtonsController.ContentViewLayoutChangeListener(mFrame));
-
-    mButtonsMap = new HashMap<>();
-    mButtonsMap.put(MapButtons.zoom, zoomFrame);
-    mButtonsMap.put(MapButtons.myPosition, myPosition);
-    mButtonsMap.put(MapButtons.bookmarks, bookmarksButton);
-    mButtonsMap.put(MapButtons.search, searchButton);
-
-    if (mToggleMapLayerButton != null)
-      mButtonsMap.put(MapButtons.toggleMapLayer, mToggleMapLayerButton);
-    if (menuButton != null)
       mButtonsMap.put(MapButtons.menu, menuButton);
-    if (helpButton != null)
-      mButtonsMap.put(MapButtons.help, helpButton);
-    if (mTrackRecordingStatusButton != null)
-      mButtonsMap.put(MapButtons.trackRecordingStatus, mTrackRecordingStatusButton);
-    showButton(false, MapButtons.trackRecordingStatus);
-    return mFrame;
+    }
+  }
+
+  private void applyUniversalButton()
+  {
+    FloatingActionButton universalButtonView = mFrame.findViewById(R.id.universal_button);
+    if (universalButtonView != null && mUniversalButton != null)
+    {
+      UiUtils.show(universalButtonView);
+
+      Context context = getContext();
+      if (context == null)
+        return;
+
+      universalButtonView.setImageTintList(ColorStateList.valueOf(ThemeUtils.getColor(context, R.attr.iconTint)));
+
+      // Christmas tree with help button
+      if (Config.isNY() &&
+          mUniversalButton.getCode().equals("help") &&
+          !TextUtils.isEmpty(Config.getDonateUrl(requireContext()))
+      )
+      {
+        universalButtonView.setImageResource(R.drawable.ic_christmas_tree);
+        universalButtonView.setOnClickListener((v) -> mMapButtonClickListener.onMapButtonClick(MapButtons.help));
+      }
+      else
+      {
+        mUniversalButton.drawIcon(universalButtonView);
+        universalButtonView.setOnClickListener((v) -> mUniversalButton.onClick(universalButtonView));
+      }
+      //      else
+      //      {
+      //        helpButton.setImageResource(R.drawable.ic_launcher);
+      //      }
+      //      // Keep this button colorful in normal theme.
+      //      if (!ThemeUtils.isNightTheme(requireContext()))
+      //        helpButton.getDrawable().setTintList(null);
+    }
+    else if (universalButtonView != null)
+    {
+      UiUtils.hide(universalButtonView);
+    }
   }
 
   public void showButton(boolean show, MapButtonsController.MapButtons button)
@@ -251,7 +305,7 @@ public class MapButtonsController extends Fragment
     final UpdateInfo info = MapManager.nativeGetUpdateInfo(null);
     final int count = (info == null ? 0 : info.filesCount);
     final int verticalOffset = dpToPx(8, context) + dpToPx(Integer.toString(0)
-                                                                  .length() * 5, context);
+        .length() * 5, context);
 
     if (count == 0)
     {
@@ -450,6 +504,27 @@ public class MapButtonsController extends Fragment
       mSearchWheel.reset();
   }
 
+  public void setUniversalButton(UniversalButton universalButton)
+  {
+    this.mUniversalButton = universalButton;
+  }
+
+  public void reloadUniversalButton(UniversalButton universalButton)
+  {
+    setUniversalButton(universalButton);
+    applyUniversalButton();
+  }
+
+  private void updateUniversalButtonState(boolean isEnabled)
+  {
+    if (mUniversalButton instanceof UniversalToggleButton)
+    {
+      ((UniversalToggleButton) mUniversalButton).setChecked(isEnabled);
+
+      reloadUniversalButton(mUniversalButton);
+    }
+  }
+
   public enum LayoutMode
   {
     regular,

android/app/src/main/java/app/organicmaps/settings/SettingsPrefsFragment.java

@@ -25,6 +25,8 @@ import app.organicmaps.help.HelpActivity;
 import app.organicmaps.location.LocationHelper;
 import app.organicmaps.location.LocationProviderFactory;
 import app.organicmaps.sdk.routing.RoutingOptions;
+import app.organicmaps.universalbuttons.UniversalButton;
+import app.organicmaps.universalbuttons.UniversalButtonsHolder;
 import app.organicmaps.util.Config;
 import app.organicmaps.util.NetworkPolicy;
 import app.organicmaps.util.PowerManagment;
@@ -35,6 +37,9 @@ import app.organicmaps.util.log.LogsManager;
 import app.organicmaps.sdk.search.SearchRecents;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 import java.util.Locale;
 
 public class SettingsPrefsFragment extends BaseXmlSettingsFragment implements LanguagesFragment.Listener
@@ -68,6 +73,59 @@ public class SettingsPrefsFragment extends BaseXmlSettingsFragment implements La
     initSearchPrivacyPrefsCallbacks();
     initScreenSleepEnabledPrefsCallbacks();
     initShowOnLockScreenPrefsCallbacks();
+    initUniversalButtonPrefs();
+  }
+
+  private void initUniversalButtonPrefs()
+  {
+    final ListPreference pref = getPreference(UniversalButtonsHolder.KEY_PREF_UNIVERSAL_BUTTON);
+    UniversalButtonsHolder holder = UniversalButtonsHolder.getInstance(requireContext());
+
+    UniversalButton currentButton = holder.getActiveButton();
+    Collection<UniversalButton> buttons = holder.getAllButtons();
+
+    List<String> entryList = new ArrayList<>(buttons.size() + 1);
+    List<String> valueList = new ArrayList<>(buttons.size() + 1);
+
+    String notDisplayId = "not_display";
+
+    entryList.add(requireContext().getString(R.string.pref_universal_button_not_display));
+    valueList.add(notDisplayId);
+
+    for (UniversalButton button : buttons)
+    {
+      entryList.add(button.getPrefsName());
+      valueList.add(button.getCode());
+    }
+
+    pref.setEntries(entryList.toArray(new CharSequence[0]));
+    pref.setEntryValues(valueList.toArray(new CharSequence[0]));
+
+    if (currentButton != null)
+    {
+      pref.setSummary(currentButton.getPrefsName());
+      pref.setValue(currentButton.getCode());
+    }
+    else
+    {
+      pref.setSummary(R.string.pref_universal_button_not_display);
+      pref.setValue(notDisplayId);
+    }
+
+    pref.setOnPreferenceChangeListener((preference, newValue) -> {
+      int index = pref.findIndexOfValue(newValue.toString());
+      if (index >= 0)
+      {
+        pref.setSummary(pref.getEntries()[index]);
+      }
+
+      Intent intent = new Intent();
+      intent.putExtra(UniversalButtonsHolder.KEY_PREF_UNIVERSAL_BUTTON, newValue.toString());
+
+      requireActivity().setResult(-1, intent);
+
+      return true;
+    });
   }
 
   private void updateVoiceInstructionsPrefsSummary()

android/app/src/main/java/app/organicmaps/universalbuttons/UniversalButton.java

@@ -0,0 +1,14 @@
+package app.organicmaps.universalbuttons;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+public interface UniversalButton
+{
+  String getCode();
+
+  String getPrefsName();
+
+  void drawIcon(FloatingActionButton imageView);
+
+  void onClick(FloatingActionButton universalButtonView);
+}

android/app/src/main/java/app/organicmaps/universalbuttons/UniversalButtonsHolder.java

@@ -0,0 +1,109 @@
+package app.organicmaps.universalbuttons;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.text.TextUtils;
+
+import androidx.annotation.Nullable;
+import androidx.preference.PreferenceManager;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+
+import app.organicmaps.MwmApplication;
+import app.organicmaps.R;
+import app.organicmaps.help.HelpActivity;
+
+public class UniversalButtonsHolder
+{
+  private static volatile UniversalButtonsHolder instance;
+
+  public static final String KEY_PREF_UNIVERSAL_BUTTON = "universal_button";
+  private static final String BUTTON_HELP_CODE = "help";
+  public static final String BUTTON_SETTINGS_CODE = "settings";
+  public static final String BUTTON_ADD_PLACE_CODE = "add-place";
+  public static final String BUTTON_RECORD_TRACK_CODE = "record-track";
+  private static final String DEFAULT_BUTTON_CODE = BUTTON_HELP_CODE;
+
+  private final Context context;
+  private final SharedPreferences prefs;
+  private final Map<String, UniversalButton> availableButtons = new HashMap<>();
+
+  private UniversalButtonsHolder(Context context)
+  {
+    this.context = context;
+    this.prefs = PreferenceManager.getDefaultSharedPreferences(context);
+  }
+
+  public void registerButton(UniversalButton button)
+  {
+    availableButtons.put(button.getCode(), button);
+  }
+
+  public void registerDefaultUniversalButtons(Context context)
+  {
+    registerButton(new UniversalButton()
+    {
+      @Override
+      public String getCode()
+      {
+        return BUTTON_HELP_CODE;
+      }
+
+      @Override
+      public String getPrefsName()
+      {
+        return context.getString(R.string.help);
+      }
+
+      @Override
+      public void drawIcon(FloatingActionButton imageView)
+      {
+        imageView.setImageResource(R.drawable.ic_question_mark);
+      }
+
+      @Override
+      public void onClick(FloatingActionButton universalButtonView)
+      {
+        Intent intent = new Intent(context, HelpActivity.class);
+        context.startActivity(intent);
+      }
+    });
+  }
+
+  @Nullable
+  public UniversalButton getActiveButton()
+  {
+    String activeButtonCode = prefs.getString(KEY_PREF_UNIVERSAL_BUTTON, DEFAULT_BUTTON_CODE);
+    if (!TextUtils.isEmpty(activeButtonCode))
+      return availableButtons.get(activeButtonCode);
+    else
+      return null;
+  }
+
+  public Collection<UniversalButton> getAllButtons()
+  {
+    return availableButtons.values();
+  }
+
+  public static UniversalButtonsHolder getInstance(Context context)
+  {
+    UniversalButtonsHolder localInstance = instance;
+    if (localInstance == null)
+    {
+      synchronized (UniversalButtonsHolder.class)
+      {
+        localInstance = instance;
+        if (localInstance == null)
+        {
+          instance = localInstance = new UniversalButtonsHolder(context);
+        }
+      }
+    }
+    return localInstance;
+  }
+}

android/app/src/main/java/app/organicmaps/universalbuttons/UniversalToggleButton.java

@@ -0,0 +1,8 @@
+package app.organicmaps.universalbuttons;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+public interface UniversalToggleButton extends UniversalButton
+{
+  void setChecked(boolean checked);
+}

android/app/src/main/res/layout-land/map_buttons_bottom.xml

@@ -9,29 +9,37 @@
   android:clipChildren="false"
   android:clipToPadding="false">
   <include
+    android:id="@+id/universal_button"
     layout="@layout/map_buttons_help"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
+    android:layout_marginStart="@dimen/margin_half_plus"
     app:layout_constraintBottom_toBottomOf="parent"
+    app:layout_constraintEnd_toStartOf="@+id/btn_search"
     app:layout_constraintStart_toStartOf="parent" />
   <include
+    android:id="@+id/btn_search"
     layout="@layout/map_buttons_search_square"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
+    android:layout_marginStart="@dimen/margin_base_plus"
     app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintEnd_toStartOf="@+id/btn_bookmarks"
-    app:layout_constraintStart_toEndOf="@+id/help_button" />
+    app:layout_goneMarginStart="@dimen/margin_half_plus"
+    app:layout_constraintStart_toEndOf="@+id/universal_button" />
   <include
+    android:id="@+id/btn_bookmarks"
     layout="@layout/map_buttons_bookmarks_square"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
+    android:layout_marginStart="@dimen/margin_base_plus"
     app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintEnd_toStartOf="@+id/menu_button"
     app:layout_constraintStart_toEndOf="@+id/btn_search" />
   <include
+    android:id="@+id/menu_button"
     layout="@layout/map_buttons_menu"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
+    android:layout_marginStart="@dimen/margin_base_plus"
     app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintEnd_toEndOf="parent" />
+    app:layout_constraintStart_toEndOf="@+id/btn_bookmarks" />
 </androidx.constraintlayout.widget.ConstraintLayout>

android/app/src/main/res/layout/map_buttons_bottom.xml

@@ -7,38 +7,51 @@
   android:layout_height="wrap_content">
   <androidx.constraintlayout.widget.ConstraintLayout
     style="@style/MwmWidget.MapButton.Bottom"
-    android:layout_width="match_parent"
+    android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_centerInParent="true"
     android:clipChildren="false"
     android:clipToPadding="false">
     <include
+      android:id="@+id/universal_button"
       layout="@layout/map_buttons_help"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
-      android:layout_marginStart="@dimen/margin_half"
+        android:layout_marginHorizontal="@dimen/margin_half_plus"
       app:layout_constraintBottom_toBottomOf="parent"
+      app:layout_constraintEnd_toStartOf="@+id/btn_search"
+      app:layout_constraintHorizontal_bias="0.5"
+      app:layout_constraintHorizontal_chainStyle="spread_inside"
       app:layout_constraintStart_toStartOf="parent" />
     <include
+      android:id="@+id/btn_search"
       layout="@layout/map_buttons_search_square"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/margin_half_plus"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintEnd_toStartOf="@+id/btn_bookmarks"
-      app:layout_constraintStart_toEndOf="@+id/help_button" />
+      app:layout_constraintHorizontal_bias="0.5"
+      app:layout_constraintStart_toEndOf="@+id/universal_button" />
     <include
+      android:id="@+id/btn_bookmarks"
       layout="@layout/map_buttons_bookmarks_square"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/margin_half_plus"
       app:layout_constraintBottom_toBottomOf="parent"
       app:layout_constraintEnd_toStartOf="@+id/menu_button"
+      app:layout_constraintHorizontal_bias="0.5"
       app:layout_constraintStart_toEndOf="@+id/btn_search" />
     <include
+      android:id="@+id/menu_button"
       layout="@layout/map_buttons_menu"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
-      android:layout_marginEnd="@dimen/margin_half"
+        android:layout_marginHorizontal="@dimen/margin_half_plus"
       app:layout_constraintBottom_toBottomOf="parent"
-      app:layout_constraintEnd_toEndOf="parent" />
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintHorizontal_bias="0.5"
+      app:layout_constraintStart_toEndOf="@+id/btn_bookmarks" />
   </androidx.constraintlayout.widget.ConstraintLayout>
 </RelativeLayout>

android/app/src/main/res/layout/map_buttons_help.xml

@@ -5,5 +5,6 @@
   android:id="@+id/help_button"
   style="@style/MwmWidget.MapButton.Square"
   android:contentDescription="@string/help"
+  android:tint="@null"
   app:shapeAppearanceOverlay="@style/MwmWidget.MapButton.Square"
   app:srcCompat="@drawable/ic_question_mark" />

android/app/src/main/res/values/strings.xml

@@ -930,4 +930,6 @@
     <!-- preference string for using auto theme only in navigation mode -->
     <string name="nav_auto">Auto in navigation</string>
     <string name="codeberg">Codeberg</string>
+    <string name="pref_universal_button">Universal button setup</string>
+    <string name="pref_universal_button_not_display">Do not display</string>
 </resources>

android/app/src/main/res/xml/prefs_main.xml

@@ -106,6 +106,12 @@
         app:singleLineTitle="false"
         android:persistent="false"
         android:order="18"/>
+    <ListPreference
+        android:key="universal_button"
+        android:title="@string/pref_universal_button"
+        app:singleLineTitle="false"
+        android:persistent="true"
+        android:order="20"/>
   </androidx.preference.PreferenceCategory>
 
   <androidx.preference.PreferenceCategory