What to do if react native red screen error occurs

React native red screen error solution: 1. Create the folder assets in "android/app/src/main/"; 2. Execute the command "react-native bundle --platform android --dev false --entry-file index.android.js..."; 3. Execute "react-native run-android" in the project.

The operating environment of this tutorial: Windows 10 system, React Native version 0.67, Dell G3 computer.

What should I do if react native reports a red screen error?

Red screen error when react-native starts: Unable to load script.Make sure you're either running a metro server or that ....

1. Error message content

I got this error when I started the react-native project in Android Studio

1. Error message:Unable to load script.Make sure you're either running a metro server ( run 'react-native start' ) or that your bundle 'index.android.bundle' is packaged correctly for release.

2. Chinese translation: Unable to load script. Please make sure you are running Metro server (run 'react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.

2. Reason

index.android.bundle Does this file exist?

I searched globally for this file in the editor and could not find it

3. Solution

1. Create the folder assets

in the project in android/app/src/main/ 2. Execute the command in the project

react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

*Note: Check whether your project has the file index.android.js. If so, press Enter to execute the command. Otherwise, an error will be reported and cannot be found. This index.android.js file; Change index.android.js to index.js

##After executing this command, it will be in the newly created assets folder Generate an index.android.bundle file

3. Execute react-native run-android in the project and start successfully

4. After successful startup

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