关闭js服务器终端，再次运行build

I've never seen this error before, but whenever I can't get Xcode and React-Native to play well together, I do a couple of things. Check what version of Xcode I'm working with. If it needs to be updated, I update it. Then clearing watchman and the cache are the second place I go. I don't use the reset cache command. It always says that I need to verify the cache, so I skip that (you can do it though, I just get confused). I use rm -rf $TMPDIR/react-* to get rid of any cached builds. If that doesn't work, I try to build the app in Xcode, then work my way from there, to build it with react-native run-ios. With this error message, it seems you might start by trying to build it with Xcode. Hope that helps...let me know your progress with it. Good luck! (Also, you could update to RN 0.51 as another attempt to get your versions synced.)

我更新了react-native版本:0.57.4到0.59.8，我得到以下消息“react-native版本不匹配”

这个解决方案对我来说很有效:

1.- In the folder of the project, update all the code react-native in the Android Studio:

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/

2.- Go to Android Studio and FILE->>INVALIDATE CACHES/RESTART
3.- In Android Studio, BUILD->>CLEAN PROJECT
4.- In Android Studio, BUILD->>REBUILD PROJECT
5.- Delete App in simulator or Devices
6.- Run...

希望对大家有所帮助!

这是我对它所做的:

关闭所有终端并再次运行构建。

你可能忘记从另一个项目关闭nodejs终端，而他们碰巧安装了不同的react版本。

因此，从nodejs服务器获取的代码与本机代码冲突。

这尤其适用于Android Studio 3.2或更新的用户，因为这在升级之前似乎没有发生。

如果你没有在你的配置(包)中更改React Native的版本。)，版本不匹配的问题可能来自于检出git中的另一个提交后对项目文件的未检测到的更改。要克服这个问题，请确保:

清洁构建:构建>清洁项目 用Gradle文件同步项目:在导航栏上的“停止”按钮旁边 制作项目:导航栏中第一个带有锤子图标的按钮 最后运行/调试应用程序

这也将克服会话“应用程序”:错误安装APK错误，可能发生由于即时运行，一旦应用程序从设备上卸载。

还要确保在模拟器中启用了wifi