在 React Native 0.71 上将 AppDelegate.mm 更改为 AppDelegate.swift答案

【问题标题】：Change AppDelegate.mm to AppDelegate.swift on React Native 0.71在 React Native 0.71 上将 AppDelegate.mm 更改为 AppDelegate.swift
【发布时间】：2023-02-10 12:06:13
【问题描述】：

我遇到错误“A moduleName is required to create an RCTROotView”，然后应用程序卡在启动页面上。谁能帮我？谢谢。

步

运行'npx react-native init RN0710RC3 --version 0.71.0-rc.3'创建一个RN项目

创建“AppDelegate.swift”“Bridging-Header.h”并删除“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;
  }
}

桥接头.h

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

【问题讨论】：

标签： ios react-native swift5

【解决方案1】：

Objective-C 接口RCTAppDelegate 需要函数concurrentRootEnabled，因此您应该将@objc 放入其中。

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

【讨论】：