如何在 Visual Studio 代码中调试 React Native 应用程序？

Question

I am using visual studio code IDE to develop react native app and am not using expo library.

Before that I was working on the android studio, debugging in that is straightforward and simple.

Now for react-native, I wanted to know how to debug my app using visual studio code IDE?

Answer 1

If you want to debug the app in VS Code itself, like in other IDEs. Then on approach can be to follow the following steps:

1. Install React Native Tools Extension (provided by Microsoft ) to VS Code.

This is a nice add on to VS Code's capabilities for React Native.

2. Then go to Debug option from left menu and click on Add Configuration.

If it initially says No Configuration then you can click on Add Configuration and then choose React Native option.

3. Now if already have Launch configuration added, then you can click on Add Configuration button then you will see more options related to React Native.

You can add configurations for React Native: Attach to Packager , React Native: Debug to Android , React Native: Debug to iOS in your launch.json file. It is present in .vscode folder.

4. Then add your breakpoints in code. Now suppose you already have your app running on emulator then you can choose option Attach to Packager .

5. Then on emulator or device open developer options (Ctrl + M for Windows + Android) and click on Debug JS Remotely .

Now your breakpoints should be working. Similarly if your app wasn't working already then you can go for Debug Android or Debug iOS accordingly.

Answer 2

Step1: Open app Setting in your mobile by shaking your mobile or by typing this command in your machine if your running android.

adb shell input keyevent 82

Step2: Select Debug JS Remotely which is the second option. Step3: In your Browser type Url http://localhost:8081/debugger-ui/ Step4: Again Open App Setting by shaking or running the command shown in step 1 and select Reload option which is first option

Now You can get all console logs in the browser and also you can debug your app remotely by putting breakpoints and analyze the values step by step.