CODEWITHSUNDEEP
iosreact-nativeswift5
Ryan
Ryan

Reputation: 31

Change AppDelegate.mm to AppDelegate.swift on React Native 0.71

I encountered the error "A moduleName is required to create an RCTROotView", and then the app was stuck on the startup page. Who can help me? thank you.

Step

  1. run 'npx react-native init RN0710RC3 --version 0.71.0-rc.3' to create a RN project
  2. create 'AppDelegate.swift' 'Bridging-Header.h' and delete 'AppDelegate.mm' 'AppDelegate.h' 'main.m'

AppDelegate.mm

#import "AppDelegate.h"

#import <React/RCTBundleURLProvider.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    self.moduleName = @"RN0710RC3";
    return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
    #if DEBUG
    return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index"];
    #else
    return [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
    #endif
}

- (BOOL)concurrentRootEnabled
{
    return true;
}

@end

AppDelegate.swift

import Foundation
import UIKit

@UIApplicationMain
class AppDelegate: RCTAppDelegate {

  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
      CommonTheme.currentTheme.primaryColor = .red;
      self.moduleName = "RN0710RC3";
      return self.application(application, didFinishLaunchingWithOptions: launchOptions);
  }

  override func sourceURL(for bridge: RCTBridge!) -> URL! {
      #if DEBUG
      return RCTBundleURLProvider.sharedSettings()?.jsBundleURL(forBundleRoot: "index", fallbackResource: nil)
      #else
      return Bundle.main.url(forResource: "main", withExtension: "jsBundle")
      #endif
  }

  func concurrentRootEnabled() -> Bool {
      return true;
  }
}

Bridging-Header.h

#import <RCTAppDelegate.h>
#import <React/RCTBundleURLProvider.h>

Upvotes: 3

Views: 4884

Answers (3)

Suresh Peddisetti
Suresh Peddisetti

Reputation: 3812

AppDelegate.swift

import Foundation
import UIKit

@UIApplicationMain
class AppDelegate: RCTAppDelegate {
  override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    self.moduleName = "ModuleName"
    self.initialProps = [:]
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

  override func bundleURL() -> URL? {
    #if DEBUG
      return RCTBundleURLProvider.sharedSettings().jsBundleURL(forBundleRoot: "index", fallbackExtension: nil)
    #else
      return Bundle.main.url(forResource: "main", withExtension: "jsbundle")
    #endif
  }
}

Upvotes: 0

Ethan Yan
Ethan Yan

Reputation: 121

return [super application:application didFinishLaunchingWithOptions:launchOptions];
should convert into
return super.application(application, didFinishLaunchingWithOptions: launchOptions)

and then the issue should be solved.

Upvotes: 0

iamleaf
iamleaf

Reputation: 1

The function concurrentRootEnabled is required by the Objective-C interface RCTAppDelegate, so you should put @objc to it.

@objc func concurrentRootEnabled() -> Bool {
   return true;
}

Upvotes: 0

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