demo(iOS): support bridgeless mode with new-arch.

examples/demo-react-native/ios/example/AppDelegate.h

@@ -1,16 +1,6 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
+#import <RCTAppDelegate.h>
 #import <UIKit/UIKit.h>
 
-@interface AppDelegate : UIResponder <UIApplicationDelegate>
-
-@property (nonatomic, strong) UIWindow *window;
+@interface AppDelegate : RCTAppDelegate
 
 @end

examples/demo-react-native/ios/example/AppDelegate.m

@@ -1,40 +1,29 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
 #import "AppDelegate.h"
-#import <React/RCTRootView.h>
+
 #import <React/RCTBundleURLProvider.h>
 
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
-  NSURL *jsCodeLocation;
-  #ifdef DEBUG
-    jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle?platform=ios&dev=true"];
-  #else
-    jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
-  #endif
+    self.moduleName = @"example";
+    self.initialProps = @{};
 
-  RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
-                                                      moduleName:@"example"
-                                               initialProperties:nil
-                                                   launchOptions:launchOptions];
-  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.0f green:1.0f blue:1.0f alpha:1];
+    return [super application:application didFinishLaunchingWithOptions:launchOptions];
+}
 
-  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
-  UIViewController *rootViewController = [UIViewController new];
-  rootViewController.view = rootView;
-  self.window.rootViewController = rootViewController;
-  [self.window makeKeyAndVisible];
+- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
+{
+    return [self bundleURL];
+}
 
-  return YES;
+- (NSURL *)bundleURL
+{
+#if DEBUG
+    return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index"];
+#else
+    return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
+#endif
 }
 
 @end