17 December 2024 Leave a comment Tech-Help
When working with React Native and Native Base, encountering the error “Module AppRegistry is not registered callable module (calling runApplication)” can be quite perplexing. This guide will walk you through effective solutions to resolve this issue, ensuring your development process remains smooth and efficient.
Understanding the Issue
This error typically arises due to issues with the Metro Bundler, the cache, or incorrect configuration in your project files. Identifying the root cause is essential for applying the correct solution.
Steps to Resolve the Error
1. Restart Node Processes and Clear Cache
- Terminate all running Node.js processes. On macOS and Linux, use the command:
killall -9 node. For Windows, execute:
taskkill /im node.exeor
taskkill /f /im node.exeif needed. - Reset the cache and start the npm server with:
npm start --reset-cache. - Re-run your application using:
react-native run-iosor
react-native run-android.
2. Restart Metro Bundler
If the issue persists, try closing the Metro Bundler and restarting it with cache reset:
npm start -- --reset-cache3. Verify AppRegistry Configuration
Ensure that your entry file (e.g., index.js) contains the correct AppRegistry setup. You should have:
import { AppRegistry } from 'react-native';
AppRegistry.registerComponent('YourAppName', () => App);Additional Considerations
In some cases, the error may be due to issues with the iOS simulator or newly installed packages. Ensure that all native dependencies are correctly linked, especially after installing new packages. For iOS, a pod install may be necessary after adding new native dependencies.
Using Repeato for Automated Testing
To streamline your app testing process, consider using Repeato, a no-code test automation tool for iOS and Android apps. Repeato utilizes computer vision and AI, allowing you to create, run, and maintain automated tests with ease. It is particularly effective in identifying UI-related issues, similar to the one discussed in this guide, ensuring your app functions as intended across various scenarios.
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