Wire up tab show/hide and tab selection

android/app/src/main/java/com/reactnativenavigation/activities/BaseReactActivity.java

@@ -45,6 +45,9 @@ import javax.annotation.Nullable;
  */
 public abstract class BaseReactActivity extends AppCompatActivity implements DefaultHardwareBackBtnHandler {
 
+    protected static final String KEY_ANIMATED = "animated";
+    protected static final String KEY_HIDDEN = "hidden";
+    protected static final String KEY_TAB_INDEX = "tabIndex";
     protected static final String KEY_TITLE = "title";
     private static final String TAG = "BaseReactActivity";
     private static final String REDBOX_PERMISSION_MESSAGE =
@@ -366,4 +369,12 @@ public abstract class BaseReactActivity extends AppCompatActivity implements Def
 
         mToolbar.setTitle(title.getString(KEY_TITLE));
     }
+
+    public void switchToTab(ReadableMap params) {
+        return;
+    }
+
+    public void toggleTabs(ReadableMap params) {
+        return;
+    }
 }

android/app/src/main/java/com/reactnativenavigation/activities/BottomTabActivity.java

@@ -9,6 +9,7 @@ import android.widget.FrameLayout;
 
 import com.aurelhubert.ahbottomnavigation.AHBottomNavigation;
 import com.aurelhubert.ahbottomnavigation.AHBottomNavigationItem;
+import com.facebook.react.bridge.ReadableMap;
 import com.reactnativenavigation.R;
 import com.reactnativenavigation.core.RctManager;
 import com.reactnativenavigation.core.objects.Screen;
@@ -189,6 +190,23 @@ public class BottomTabActivity extends BaseReactActivity implements AHBottomNavi
         }
     }
 
+    @Override
+    public void switchToTab(ReadableMap params) {
+        int tabIndex = params.getInt(KEY_TAB_INDEX);
+        mBottomNavigation.setCurrentItem(tabIndex);
+    }
+
+    @Override
+    public void toggleTabs(ReadableMap params) {
+        boolean hide = params.getBoolean(KEY_HIDDEN);
+        boolean animated = params.getBoolean(KEY_ANIMATED);
+        if (hide) {
+            mBottomNavigation.hideBottomNavigation(animated);
+        } else {
+            mBottomNavigation.restoreBottomNavigation(animated);
+        }
+    }
+
     private static class SetupTabsTask extends AsyncTask<Void, Void, Map<Screen, Drawable>> {
         private BottomTabActivity mActivity;
         private RnnToolBar mToolBar;

android/app/src/main/java/com/reactnativenavigation/modules/RctActivityModule.java

@@ -120,6 +120,34 @@ public class RctActivityModule extends ReactContextBaseJavaModule {
         });
     }
 
+    @ReactMethod
+    public void switchToTab(final ReadableMap params) {
+        final BaseReactActivity context = ContextProvider.getActivityContext();
+        if (context == null || context.isFinishing()) {
+            return;
+        }
+        context.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                context.switchToTab(params);
+            }
+        });
+    }
+
+    @ReactMethod
+    public void toggleNavigatorTabs(final ReadableMap params) {
+        final BaseReactActivity context = ContextProvider.getActivityContext();
+        if (context == null || context.isFinishing()) {
+            return;
+        }
+        context.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                context.toggleTabs(params);
+            }
+        });
+    }
+
     @ReactMethod
     public void navigatorPush(final ReadableMap skreen) {
         final Screen screen = new Screen(skreen);

src/platformSpecific.android.js

@@ -88,6 +88,19 @@ function navigatorSetTitle(navigator, params) {
   RctActivity.setNavigatorTitle(params);
 }
 
+function navigatorSwitchToTab(navigator, params) {
+  RctActivity.switchToTab({
+    tabIndex: params.tabIndex
+  });
+}
+
+function navigatorToggleTabs(navigator, params) {
+  RctActivity.toggleNavigatorTabs({
+    hidden: params.to == 'hidden',
+    animated: !(params.animated === false)
+  });
+}
+
 function showModal(params) {
   addNavigatorParams(params);
   addNavigatorButtons(params);
@@ -144,5 +157,7 @@ export default {
   dismissModal,
   dismissAllModals,
   navigatorSetButtons,
-  navigatorSetTitle
+  navigatorSetTitle,
+  navigatorSwitchToTab,
+  navigatorToggleTabs
 }