How to Display Images Picked from File Picker in Flutter

Learn how to utilize the File Picker package in Flutter to select and display images effortlessly in your web app.
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Display Images Picked from File Picker in Flutter

When building web applications using Flutter, one common requirement is to allow users to select images from their device. This can enhance the application's functionality significantly, especially for photo galleries, profile setups, or any feature that requires image uploads. However, displaying these selected images in your UI can be a bit tricky, especially with web applications where file paths aren't accessible. In this guide, we will explore how to utilize the file_picker package to select multiple images and display them in your Flutter app.

Understanding the Problem

You've successfully incorporated the file_picker package to allow multiple image selections. The code snippet you have stores the selected images as a list of MultipartFile, but you're unsure how to render these images to the UI. Given that the .path attribute is not accessible in Flutter web apps, we need to approach this differently, focusing on displaying the images through the bytes stored in each MultipartFile.

Step-by-Step Solution

1. Initialize Image File Lists

Firstly, we'll adjust the way we declare our lists to hold the files. Instead of using List<MultipartFile>, we will declare List<PlatformFile> to easily access the image bytes.

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

2. Modify the File Picker Function

Next, we adapt the PickUploadFiles function to populate both the files and multipartFiles lists:

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

3. Render Images in the UI

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

Summary of the Code

Let’s recap our complete code structure for clarity:

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

Conclusion

By following the steps outlined above, you can easily allow users to pick images and render them in your Flutter web application using the file_picker package. This approach not only makes your app more interactive but also showcases the powerful capabilities of Flutter for handling media files.

Now you're all set to implement image selection and display functionality in your Flutter application! Happy coding!