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在Xcode中运行初始化的React Native项目时出现错误

iosreact-native
3

在安装了react-native并运行新创建的Xcode项目后，我得到以下输出：

2015-03-26 15:35:05.865 React[1427:7950] CLTilesManagerClient: initialize, sSharedTilesManagerClient
2015-03-26 15:35:05.865 React[1427:7950] CLTilesManagerClient: init
2015-03-26 15:35:05.866 React[1427:7950] CLTilesManagerClient: reconnecting, 0x7fac1b289e40
RCTJSLog> "Running application "React" with appParams: {"rootTag":1,"initialProps":{}}. __DEV__ === true, development-level warning are ON, performance optimizations are OFF"
RCTJSLog> "Error: 
 stack: 
  React_render                                       index.ios.bundle:955
  _renderValidatedComponentWithoutOwnerOrContext     index.ios.bundle:16453
  _renderValidatedComponent                          index.ios.bundle:16479
  ReactCompositeComponent__renderValidatedComponent  index.ios.bundle:4860
  mountComponent                                     index.ios.bundle:15913
  ReactCompositeComponent_mountComponent             index.ios.bundle:4860
  mountComponent                                     index.ios.bundle:4929
  mountComponentIntoNode                             index.ios.bundle:15386
  perform                                            index.ios.bundle:5992
  batchedMountComponentIntoNode                      index.ios.bundle:15405
  perform                                            index.ios.bundle:5992
  batchedUpdates                                     index.ios.bundle:13507
  batchedUpdates                                     index.ios.bundle:4524
  renderComponent                                    index.ios.bundle:15457
  ReactMount__renderNewRootComponent                 index.ios.bundle:4860
  render                                             index.ios.bundle:1155
  renderApplication                                  index.ios.bundle:33797
  run                                                index.ios.bundle:33743
  runApplication                                     index.ios.bundle:33765
  jsCall                                             index.ios.bundle:7149
  _callFunction                                      index.ios.bundle:7396
  applyWithGuard                                     index.ios.bundle:877
  guardReturn                                        index.ios.bundle:7198
  callFunctionReturnFlushedQueue                     index.ios.bundle:7405
 URL: http://localhost:8081/index.ios.bundle
 line: 955
 message: undefined is not a function (evaluating 'React.createElement(Text, {style: styles.welcome}, 
          "Welcome to React Native!"
        )')"

任何帮助查明失败原因的支持都将不胜感激。
谢谢！
1
通过在React目录中运行“npm start”成功解决了模拟器错误。现在连接到USB的iPhone上进行测试时出现问题。遇到此错误： 无法连接到开发服务器。确保Node服务器正在运行-从React根目录运行“npm start”。操作无法完成。（NSURLErrorDomain错误-1004）。 - TimDOES
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4
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