Add basic setNavigationTitle method

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

  */
 public abstract class BaseReactActivity extends AppCompatActivity implements DefaultHardwareBackBtnHandler {
 
+    protected static final String KEY_TITLE = "title";
     private static final String TAG = "BaseReactActivity";
     private static final String REDBOX_PERMISSION_MESSAGE =
             "Overlay permissions needs to be granted in order for react native apps to run in dev mode";
         getCurrentScreen().setButtons(buttons);
         mToolbar.setupToolbarButtonsAsync(getCurrentScreen());
     }
+
+    public void setNavigationTitle(ReadableMap title) {
+        if (mToolbar == null) {
+            return;
+        }
+
+        mToolbar.setTitle(title.getString(KEY_TITLE));
+    }
 }

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

                 BridgeUtils.addMapToBundle(((ReadableNativeMap) style).toHashMap(), extras);
             }
             intent.putExtras(extras);
-            
+
             context.startActivity(intent);
             //TODO add abstract isRoot() instead of instanceof?
             if(ContextProvider.getActivityContext() instanceof RootActivity) {
         });
     }
 
+    @ReactMethod
+    public void setNavigatorTitle(final ReadableMap title) {
+        final BaseReactActivity context = ContextProvider.getActivityContext();
+        if (context == null || context.isFinishing()) {
+            return;
+        }
+        context.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                context.setNavigationTitle(title);
+            }
+        });
+    }
+
     @ReactMethod
     public void navigatorPush(final ReadableMap skreen) {
         final Screen screen = new Screen(skreen);

src/platformSpecific.android.js

   RctActivity.navigatorResetTo(params);
 }
 
+function navigatorSetTitle(navigator, params) {
+  RctActivity.setNavigatorTitle(params);
+}
+
 function showModal(params) {
   addNavigatorParams(params);
   addNavigatorButtons(params);
   showModal,
   dismissModal,
   dismissAllModals,
-  navigatorSetButtons
+  navigatorSetButtons,
+  navigatorSetTitle
 }