Question

当我使用Xcode运行我的react-native应用程序时，在应用程序开始加载后，我看到了这个错误：

"Requiring unknown module "react". If you are sure the module is there, try restarting the packager."

我的package.json内容是：

{
  "name": "the_golf_mentor",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start"
  },
  "dependencies": {
    "react-native": "^0.21.0",
    "react-native-button": "^1.4.2",
    "react-native-cookies": "^0.0.5",
    "react-native-db-models": "^0.1.3",
    "react-native-navbar": "^1.2.1",
    "react-native-side-menu": "^0.18.0",
    "tcomb-form-native": "^0.3.3"
  }
}

我尝试重新启动软件包管理器，并且还删除了node_module文件夹并完成了新的npm install。我该如何解决这个问题？

Answer 1

我在启用热重新加载后，然后降级我的反应版本以支持我正在使用的库。

模拟器＆gt;重置内容和设置

让它再次运行。

Answer 2

React Native change object位于function Request(options, callback) { HTTPRequest = XMLHttpRequest; var xhr = new HTTPRequest(), method = options.method || "POST", url = options.url, headers = options.headers; // make a request xhr.open(method, url, true); // set headers xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8'); for (var header in headers) { xhr.setRequestHeader(header, headers[header]); } // send stringify data if (options.body && method == "POST" || method == "PUT") { if (typeof options.body === 'object') { console.log("sending in data: options.body"); xhr.send(JSON.stringify(options.body)); } else { xhr.send(options.body); } } else { xhr.send(); } // collect response xhr.onreadystatechange = function() { if (xhr.readyState === 4) { var data = xhr.responseText; try { data = JSON.parse(data); } catch (e) { console.error('Could not parse the response received from the server.'); } if (xhr.status >= 200 && xhr.status < 300) { callback(null, data); } else { callback(data, null); } } }; } var options = { url: 'https://api.contentstack.io/v2/content_types/the_lazy_goose/entries/', method:'POST', headers:{ access_token: 'xxxxxxx', //put auth token here api_key: 'xxxxxxx' }, body: { "entry": { "title": "examplexx1", "url": "/example10xxx1", "multi_line": "multiline...!", "_comment": "example comment" } } };模块而不是React（对于React JS）。在这种情况下，通过以下方式导入react-native和其他React Native模块：

react

Answer 3

您应该在反应原生项目中React react-native，而不是react。{/ p>

var React = require('react-native');

Answer 4

事实证明，错误消息是我在调试器中收到的临时消息。当我在调试器中按下几次继续时，我在模拟器窗口中收到一条消息，表示我没有正确注册该应用程序，即我的AppRegistry.registerComponent电话无效。

我怀疑这是unknown module 'react'错误消息的异常原因。在许多情况下，neciu's答案可能更有用，所以我也赞成了它。

React-native错误需要未知模块“反应”

4 个答案: