在本文中，您将会了解到关于ReactNative更改默认iOS模拟器设备的新资讯，同时我们还将为您解释reactnativewindowsios的相关在本文中，我们将带你探索ReactNative更改

在本文中，您将会了解到关于React Native 更改默认 iOS 模拟器设备的新资讯，同时我们还将为您解释react native windows ios的相关在本文中，我们将带你探索React Native 更改默认 iOS 模拟器设备的奥秘，分析react native windows ios的特点，并给出一些关于Expo/React Native：为什么 iOS 模拟器与真正的 iPhone 不同？、ios – Xcode尝试在模拟器或设备上构建React Native项目时出错、React Native - 如何使用特定的模拟器和 iOS 版本构建应用程序、React Native App 无法在 IOS 模拟器上运行的实用技巧。

• React Native 更改默认 iOS 模拟器设备（react native windows ios）
• Expo/React Native：为什么 iOS 模拟器与真正的 iPhone 不同？
• ios – Xcode尝试在模拟器或设备上构建React Native项目时出错
• React Native - 如何使用特定的模拟器和 iOS 版本构建应用程序
• React Native App 无法在 IOS 模拟器上运行

React Native 更改默认 iOS 模拟器设备（react native windows ios）

当我运行这个命令时：

react-native run-ios

我的应用程序默认运行在 iPhone6 模拟器设备中：

Found Xcode project RN.xcodeprojLaunching iPhone 6 (9.2)...

默认情况下，如何让应用程序在不同的模拟器设备（如 iPhone5s）中运行？

答案1

--simulator使用标志指定模拟器。

以下是适用于 iOS 14.0 及更高版本的可用设备：

npx react-native run-ios --simulator="iPhone 8"npx react-native run-ios --simulator="iPhone 8 Plus"npx react-native run-ios --simulator="iPhone 11"npx react-native run-ios --simulator="iPhone 11 Pro"npx react-native run-ios --simulator="iPhone 11 Pro Max"npx react-native run-ios --simulator="iPhone SE (2nd generation)"npx react-native run-ios --simulator="iPhone 12 mini"npx react-native run-ios --simulator="iPhone 12"npx react-native run-ios --simulator="iPhone 12 Pro"npx react-native run-ios --simulator="iPhone 12 Pro Max"npx react-native run-ios --simulator="iPhone 13 Pro"npx react-native run-ios --simulator="iPhone 13 Pro Max"npx react-native run-ios --simulator="iPhone 13 mini"npx react-native run-ios --simulator="iPhone 13"npx react-native run-ios --simulator="iPod touch (7th generation)"npx react-native run-ios --simulator="iPad Pro (9.7-inch)"npx react-native run-ios --simulator="iPad (9th generation)"npx react-native run-ios --simulator="iPad Air (4th generation)"npx react-native run-ios --simulator="iPad Pro (11-inch) (3rd generation)"npx react-native run-ios --simulator="iPad Pro (12.9-inch) (5th generation)"npx react-native run-ios --simulator="iPad mini (6th generation)"

列出所有可用的 iOS 设备：

xcrun simctl list devices

目前无法设置默认值。

Expo/React Native：为什么 iOS 模拟器与真正的 iPhone 不同？

Undefined symbols for architecture armv7:
"_OBJC_CLASS_$_RCTEventEmitter",referenced from:
  _OBJC_CLASS_$_RCTKeyboardobserver in libReact.a(RCTKeyboardobserver.o)
"_OBJC_MetaCLASS_$_RCTEventEmitter",referenced from:
  _OBJC_MetaCLASS_$_RCTKeyboardobserver in libReact.a(RCTKeyboardobserver.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command Failed with exit code 1 (use -v to see invocation)

xcrun simctl list devices

iPhone 8 (1A6DE54B-9DBF-4AF7-AB1E-DD577C89F7C7) (Shutdown) 
iPhone 8 Plus (21E1A66C-2122-47D8-BC28-99D67ED04BDB) (Shutdown) 
iPhone 11 (28DFD4DF-9E36-41AB-BB83-332FDAFDB1DE) (Shutdown)

npx react-native run-ios --udid [CODE]

 WARN  The "UMNativeModulesProxy" native module is not exported through NativeModules; verify that @unimodules/react-native-adapter''s native code is linked properly
 WARN  No native ExponentConstants module found,are you sure the expo-constants''s module is linked properly?
 WARN  Require cycle: src/services/profile/ProfileNetworkService.ts -> src/services/NetworkService.ts -> src/services/profile/ProfileNetworkService.ts

Require cycles are allowed,but can result in uninitialized values. Consider refactoring to remove the need for a cycle.
 ERROR  Invariant Violation: Native module cannot be null.
 ERROR  Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication). A frequent cause of the error is that the application entry file path is incorrect. 
      This can also happen when the JS bundle is corrupt or there is an early initialization error when loading React Native.
 ERROR  Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication). A frequent cause of the error is that the application entry file path is incorrect. 
      This can also happen when the JS bundle is corrupt or there is an early initialization error when loading React Native.