Implement navigator.dismissContextualMenu

android/app/src/main/java/com/reactnativenavigation/bridge/NavigationReactModule.java

                 new ContextualMenuParamsParser().parse(BundleConverter.toBundle(params));
         NavigationCommandsHandler.showContextualMenu(contextualMenuParams, onButtonClicked);
     }
+
+    @ReactMethod
+    public void dismissContextualMenu() {
+        NavigationCommandsHandler.dismissContextualMenu();
+    }
 }

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationActivity.java

         layout.showContextualMenu(params, onButtonClicked);
     }
 
+    public void dismissContextualMenu() {
+        layout.dismissContextualMenu();
+    }
+
     @Override
     public void onEvent(Event event) {
         if (event.getType().equals(ModalDismissedEvent.TYPE)) {

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationCommandsHandler.java

             }
         });
     }
+
+    public static void dismissContextualMenu() {
+        final NavigationActivity currentActivity = NavigationActivity.currentActivity;
+        if (currentActivity == null) {
+            return;
+        }
+
+        NavigationApplication.instance.runOnMainThread(new Runnable() {
+            @Override
+            public void run() {
+                currentActivity.dismissContextualMenu();
+            }
+        });
+    }
 }

android/app/src/main/java/com/reactnativenavigation/layouts/BottomTabsLayout.java

         getCurrentScreenStack().peek().showContextualMenu(params, onButtonClicked);
     }
 
+    @Override
+    public void dismissContextualMenu() {
+        getCurrentScreenStack().peek().dismissContextualMenu();
+    }
+
     public void selectBottomTabByTabIndex(Integer index) {
         bottomTabs.setCurrentItem(index);
     }

android/app/src/main/java/com/reactnativenavigation/layouts/Layout.java

     boolean containsNavigator(String navigatorId);
 
     void showContextualMenu(ContextualMenuParams params, Callback onButtonClicked);
+
+    void dismissContextualMenu();
 }

android/app/src/main/java/com/reactnativenavigation/layouts/SingleScreenLayout.java

         stack.peek().showContextualMenu(params, onButtonClicked);
     }
 
+    @Override
+    public void dismissContextualMenu() {
+        stack.peek().dismissContextualMenu();
+    }
+
     @Override
     public boolean onTitleBarBackButtonClick() {
         if (leftButtonOnClickListener != null) {

android/app/src/main/java/com/reactnativenavigation/screens/Screen.java

         setStatusBarColor(styleParams.contextualMenuStatusBarColor);
     }
 
+    public void dismissContextualMenu() {
+        topBar.dismissContextualMenu();
+    }
+
     public void destroy() {
         unmountReactView();
         EventBus.instance.unregister(this);

src/Screen.js

     return platformSpecific.showContextualMenu(this, params, onButtonPressed);
   }
 
+  dismissContextualMenu() {
+    return platformSpecific.dismissContextualMenu();
+  }
+
   setOnNavigatorEvent(callback) {
     this.navigatorEventHandler = callback;
     if (!this.navigatorEventSubscription) {

src/deprecated/platformSpecificDeprecated.android.js

   newPlatformSpecific.showContextualMenu(contextualMenu, onButtonPressed);
 }
 
+function dismissContextualMenu() {
+  newPlatformSpecific.dismissContextualMenu();
+}
+
 export default {
   startTabBasedApp,
   startSingleScreenApp,
   navigatorToggleTabs,
   navigatorToggleNavBar,
   showSnackbar,
-  showContextualMenu
+  showContextualMenu,
+  dismissContextualMenu
 };

src/platformSpecific.android.js

   NativeReactModule.showContextualMenu(params, onButtonPressed);
 }
 
+function dismissContextualMenu() {
+  NativeReactModule.dismissContextualMenu();
+}
+
 module.exports = {
   startApp,
   push,
   setBottomTabBadgeByNavigatorId,
   setBottomTabBadgeByIndex,
   showSnackbar,
-  showContextualMenu
+  showContextualMenu,
+  dismissContextualMenu
 };