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调试原生代码

仅包含原生代码的项目

The following section only applies to projects with native code exposed. If you are using the managed Expo workflow, see the guide on prebuild to use this API.

访问日志​

¥Accessing Logs

你可以在应用运行时在终端中使用以下命令显示 iOS 或 Android 应用的原生日志：

¥You can display the native logs for an iOS or Android app by using the following commands in a terminal while the app is running:

# For Android:
npx react-native log-android
# Or, for iOS:
npx react-native log-ios

你还可以通过 iOS 模拟器中的“调试”>“打开系统日志...”或在 Android 应用在设备或模拟器上运行时在终端中运行 adb logcat "*:S" ReactNative:V ReactNativeJS:V 来访问这些内容。

¥You may also access these through Debug > Open System Log… in the iOS Simulator or by running adb logcat "*:S" ReactNative:V ReactNativeJS:V in a terminal while an Android app is running on a device or emulator.

在原生 IDE 中调试​

¥Debugging in a Native IDE

使用原生代码时，例如编写原生模块时，你可以从 Android Studio 或 Xcode 启动应用，并利用原生调试功能（设置断点等），就像构建标准原生应用一样 。

¥When working with native code, such as when writing native modules, you can launch the app from Android Studio or Xcode and take advantage of the native debugging features (setting up breakpoints, etc.) as you would in case of building a standard native app.

另一种选择是使用 React Native CLI 运行应用，并将原生 IDE（Android Studio 或 Xcode）的原生调试器附加到进程。

¥Another option is to run your application using the React Native CLI and attach the native debugger of the native IDE (Android Studio or Xcode) to the process.

Android Studio​

在 Android Studio 上，你可以通过菜单栏上的 "运行" 选项，单击 "附加到进程..." 并选择正在运行的 React Native 应用来完成此操作。

¥On Android Studio you can do this by going on the "Run" option on the menu bar, clicking on "Attach to Process..." and selecting the running React Native app.

Xcode​

在 Xcode 上，单击顶部菜单栏上的 "调试"，选择 "附加到进程" 选项，然后在 "可能的目标" 列表中选择应用。

¥On Xcode click on "Debug" on the top menu bar, select the "Attach to process" option, and select the application in the list of "Likely Targets".