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.)

Opene管理扫描/ android / app / build.gradle

试一试:

编译("com.facebook.react:react-native:0.51.0") {force = true}

而不是 编译"com.facebook.react:react-native:0.51.0" {force = true}

裁判:链接

在你的android应用级别的gradle文件中，在依赖项中强制react原生版本。

compile ("com.facebook.react:react-native:0.52.0") { force = true }

为我工作

对我来说，这是由于包的依赖项部分的反应本机版本。json文件。它是:

"dependencies": {
"expo": "^27.0.1",
"react": "16.3.1",
"react-native": "~0.55.0"
}

我把它改成:

"dependencies": {
"expo": "^27.0.1",
"react": "16.3.1",
"react-native": "0.52.0"
}

现在它工作得很好。

博览会用户-确保您的app.json sdk版本和包。Json的博览会版本是(可能相等)彼此兼容。

我在使用Expo和iOS模拟器时也遇到了这个问题。对我有用的是擦除硬件中的模拟器>擦除所有内容和设置…