Скачать или смотреть How to Fix the file_picker_error in Flutter on Mac M1

Encountering a `file_picker_error` on Flutter while using a Mac M1? This guide provides clear instructions to resolve the issue and improve your app's functionality!
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This video is based on the question https://stackoverflow.com/q/71439875/ asked by the user 'Maurizio Mancini' ( https://stackoverflow.com/u/18439816/ ) and on the answer https://stackoverflow.com/a/73594784/ provided by the user 'Gourango Sutradhar' ( https://stackoverflow.com/u/9382870/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Solving file_picker_error in Flutter on Mac M1

If you're developing a Flutter application on a Mac M1 and have encountered this frustrating error message:

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

you are not alone. Many developers face this issue, particularly when using the iOS simulator. In this guide, we will break down the causes of this error and explore practical solutions to resolve it.

Understanding the Error

When working with file picking capabilities in Flutter, such as the functionality provided by the FilePicker package, you might run into errors due to simulator limitations or licensing issues. The file_picker_error specifically indicates that the application is unable to create a temporary file necessary for the file selection process. This can be exacerbated by testing on the iOS simulator, particularly when dealing with images or specific file types.

Key Error Message Highlights:

PlatformException: A core Flutter error indicating that something has gone wrong at the platform level.

Temporary file could not be created: This is the fundamental issue, indicating a failure in file resource handling by the simulator.

NSItemProviderErrorDomain Code=-1000: A hint that the error is related to item representation during the file loading process.

Possible Causes

Simulator Limitations: Certain file types and representations may not be entirely supported in the iOS simulator, especially images or multimedia files.

File Types: Trying to access file types that aren't properly configured in your app can lead to this error.

Flutter & iOS Configuration: The app's configuration in Info.plist may not be set up correctly to handle the operations you are attempting.

Solutions to the Problem

1. Use a Real Device for Testing

The simplest way to circumvent this error is to test your application on a real device rather than the simulator. As noted in discussions within the developer community, the simulator may present various limitations since the introduction of iOS 14.

2. Cross-Check Your Code Implementation

Ensure that the code used to invoke the file picker is set up correctly. For example:

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

Make sure the type parameter you are using aligns with the file types your application can handle. Testing with different file types may also help identify if the issue lies with a specific media type.

3. Check the Info.plist Configuration

Ensure that relevant permissions and settings are properly configured in your Info.plist. The following keys should be included:

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

Having these entries is essential for allowing your app to access files appropriately, especially when it comes to executing tasks in the background or managing document browsing effectively.

Conclusion

In summary, if you're experiencing the file_picker_error while developing Flutter apps on a Mac M1, consider testing on a real device, review your file types and code implementation, and ensure your iOS configurations are set correctly. These strategies can significantly reduce the time spent troubleshooting and enhance app functionality.

By following the solutions outlined above, you should be able to navigate through the problem and keep your development process smooth. Happy coding!