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在模拟器上运行

启动模拟器​

¥Starting the simulator

初始化 React Native 项目后，你可以在新创建的项目目录中运行以下命令。

¥Once you have your React Native project initialized, you can run the following command inside the newly created project directory.

npm run ios

如果一切设置正确，你很快就会看到新应用在 iOS 模拟器中运行。

¥If everything is set up correctly, you should see your new app running in the iOS Simulator shortly.

指定设备​

¥Specifying a device

你可以使用 --simulator 标志指定模拟器应运行的设备，后跟字符串形式的设备名称。默认为 "iPhone 14"。如果你希望在 iPhone SE（第 3 代）上运行应用，请运行以下命令：

¥You can specify the device the simulator should run with the --simulator flag, followed by the device name as a string. The default is "iPhone 14". If you wish to run your app on an iPhone SE (3rd generation), run the following command:

npm run ios -- --simulator="iPhone SE (3rd generation)"

设备名称对应于 Xcode 中可用的设备列表。你可以通过从控制台运行 xcrun simctl list devices 来检查可用设备。

¥The device names correspond to the list of devices available in Xcode. You can check your available devices by running xcrun simctl list devices from the console.

指定设备版本​

¥Specifying a version of device

如果你安装了多个 iOS 版本，你还需要指定其适当的版本。例如。要在 iPhone 14 Pro (16.0) 上运行你的应用，请运行以下命令：

¥If you have multiple iOS versions installed, you also need to specify its appropriate version. E.g. To run your app on an iPhone 14 Pro (16.0) run the following command:

npm run ios -- --simulator="iPhone 14 Pro (16.0)"

指定 UDID​

¥Specifying an UDID

你可以指定从 xcrun simctl list devices 命令返回的设备 UDID。例如。要使用 UDID AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA 运行你的应用，请运行以下命令：

¥You can specify the device UDID returned from xcrun simctl list devices command. E.g. To run your app with UDID AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA run the following command:

npm run ios -- --udid="AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA"