无法在 IOS 模拟器上运行 ReactNative 应用程序

Question

我正在 Mac 上开发 ReactNative 应用程序。我已经安装了 XCode 6。我转到 XCode -> 打开开发人员工具 -> IOS 模拟器。这将启动一个模拟器，现在当我运行在 VS Code 终端上执行以下命令时

react-native run-ios

我收到以下错误

info Found Xcode project "MyNewProject.xcodeproj"
Usage: simctl list [devices|devicetypes|runtimes]
error Could not parse the simulator list output. Run CLI with --verbose flag for more details.
Error: Command failed: xcrun simctl list --json devices
Usage: simctl list [devices|devicetypes|runtimes]

at checkExecSyncError (child_process.js:629:11)
at Object.execFileSync (child_process.js:647:13)
at runOnSimulator (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/index.js:129:30)
at Object.runIOS [as func] (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/@react-native-community/cli-platform-ios/build/commands/runIOS/index.js:97:12)
at Command.handleAction (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/react-native/node_modules/@react-native-community/cli/build/cliEntry.js:160:21)
at Command.listener (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/commander/index.js:315:8)
at Command.emit (events.js:198:13)
at Command.parseArgs (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/commander/index.js:651:12)
at Command.parse (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/commander/index.js:474:21)
at setupAndRun (/Users/ssi/Desktop/ReactNativeApp/MyNewProject/node_modules/react-native/node_modules/@react-native-community/cli/build/cliEntry.js:210:24)

我在谷歌上搜索了很多，但找不到任何有用的信息。任何帮助将不胜感激

Answer 1

Xcode6岁5岁。我相信 --json 是在 Xcode 8 或 Xcode 8 中添加到 simctl 中的。如果你想使用它，你将需要来自更新 Xcode 的更新版本的 CoreSimulator .

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