Скачать или смотреть Solving the Unable to Load Asset Error in Flutter's easy_localization Library

Discover how to fix the `Unable to load asset` error in Flutter while using the `easy_localization` library, ensuring smooth localization without hot reloads.
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This video is based on the question https://stackoverflow.com/q/65318932/ asked by the user 'Mohammed Javad' ( https://stackoverflow.com/u/10532966/ ) and on the answer https://stackoverflow.com/a/65357671/ provided by the user 'Mohammed Javad' ( https://stackoverflow.com/u/10532966/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving the Unable to Load Asset Error in Flutter's easy_localization Library

If you're working on a Flutter application and using the easy_localization library for localization, you might have encountered the issue of being unable to load JSON assets on the initial app startup. This problem can be particularly frustrating, especially since it seems to resolve itself with a hot reload. Let's delve into this issue and explore how to effectively solve it.

Understanding the Problem

When you start your Flutter application, you aim to set up your localization files based on the user's chosen language. However, some developers experience a problem where the app fails to load the locale files created dynamically in the Application Directory when it is first launched, leading to an error related to loading assets.

Symptoms of the Issue:

Error message: "Unable to load asset: /data/user/0/com.example.app/app_flutter/localization/en-IN.json."

Proper functionality after performing a hot reload.

Locale JSON files are present in the Application Directory before initializing EasyLocalization.

The Solution: Using Custom Asset Loader

The main workaround for resolving this issue is to implement a custom assetLoader when initializing the EasyLocalization library. This approach allows you to manage localization files effectively without encountering errors during the initial app launch.

Step 1: Modify EasyLocalization Setup

First, you need to modify how you initialize the EasyLocalization. Replace your existing setup with the following code snippet:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Create MyAssetLoader Class

Next, you need to create a custom asset loader. This class will handle the loading of your localization files when the app starts up. Here's how you can define it:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Abstract AssetLoader Class Structure

Finally, you need a base structure for your AssetLoader. Here's how it should look:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By implementing a custom asset loader within your Flutter application, you can avoid the unable to load asset error that affects initial launches of the app. This ensures that your localization files are loaded correctly, allowing your app to operate effectively without the need for a hot reload.

Key Takeaways:

Use assetLoader to customize how localization files are loaded.

Implement a custom MyAssetLoader class to handle JSON translations.

Ensure the localization files are ready before initializing the EasyLocalization.

With these solutions, you can provide a seamless experience for users switching languages in your Flutter app. Happy coding!