added RNNViewController some functionality

ios/RCCManagerModule.m

 #import "RCCTheSideBarManagerViewController.h"
 #import "RCCNotification.h"
 
+#import "RNNViewController.h"
+
 #define kSlideDownAnimationDuration 0.35
 
 typedef NS_ENUM(NSInteger, RCCManagerModuleErrorCode)
     }
 }
 
+
+-(void)startAppHelper:(NSDictionary*)layout
+{
+    [[RCCManager sharedInstance] clearModuleRegistry];
+    
+    UIViewController *controller = [RNNViewController controllerWithLayout:layout bridge:[[RCCManager sharedInstance] getBridge]];
+    if (controller == nil) return;
+    
+    id<UIApplicationDelegate> appDelegate = [UIApplication sharedApplication].delegate;
+    
+    // set the new controller as the root
+    appDelegate.window.rootViewController = controller;
+    [appDelegate.window makeKeyAndVisible];
+}
+
+
 #pragma mark - RCT exported methods
 
 
 RCT_EXPORT_METHOD(
-startApp:(NSDictionary*)layout) {
-
-    NSLog(@"layout:%@", layout);
+startApp:(NSDictionary*)layout)
+{
+    if ([[RCCManager sharedInstance] getBridge].loading) {
+        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.0001 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+            [self startAppHelper:layout];
+        });
+        return;
+    }
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [self startAppHelper:layout];
+    });
 }
 
 
 RCT_EXPORT_METHOD(
 setRootController:(NSDictionary*)layout animationType:(NSString*)animationType globalProps:(NSDictionary*)globalProps)
 {
+    
     if ([[RCCManager sharedInstance] getBridge].loading) {
         [self deferSetRootControllerWhileBridgeLoading:layout animationType:animationType globalProps:globalProps];
         return;
    });
 }
 
+
+
 /**
  * on RN31 there's a timing issue, we must wait for the bridge to finish loading
  */

ios/RNNViewController.h

 //
 
 #import <UIKit/UIKit.h>
+#import "RCTBridge.h"
+
 
 @interface RNNViewController : UIViewController
 
++ (UIViewController*)controllerWithLayout:(NSDictionary *)layout bridge:(RCTBridge *)bridge;
+
+
 @end

ios/RNNViewController.m

 //
 
 #import "RNNViewController.h"
+#import "RCTRootView.h"
+
+#define SCREEN              @"screen"
+#define SIDE_MENU           @"sideMenu"
+#define TABS                @"tabs"
+#define SCREEN_KEY          @"key"
 
-@interface RNNViewController ()
 
+@interface RNNViewController ()
 @end
 
+
 @implementation RNNViewController
 
 
+#pragma mark - Static function 
+
+
++ (UIViewController*)controllerWithLayout:(NSDictionary *)layout bridge:(RCTBridge *)bridge {
+    
+    UIViewController *controller = nil;
+    
+    NSDictionary *screen = layout[SCREEN];
+    if (screen) {
+        NSString *screenKey = screen[SCREEN_KEY];
+        if (screenKey)
+        
+        controller = [RNNViewController navigationControllerWithScreenKey:screenKey bridge:bridge];
+    }
+    
+    return controller;
+    
+}
+
++(UINavigationController*)navigationControllerWithScreenKey:(NSString*)screenKey bridge:(RCTBridge*)bridge {
+    
+    UINavigationController *controller = nil;
+
+    UIViewController *viewController = [UIViewController new];
+    RCTRootView *reactView = [[RCTRootView alloc] initWithBridge:bridge moduleName:SCREEN_KEY initialProperties:nil];
+    controller = [[UINavigationController alloc] initWithRootViewController:viewController];
+    
+    return controller;
+}
+
 
 @end
+