Your app is using an unsupported gradle project. to fix this problem, create a new project by running `flutter create -t app ` and then move the dart code, assets and pubspec.yaml to the new project.

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To fix the issue of your app using an unsupported Gradle project, you need to create a new project using the following command:
flutter create -t app <app-directory>

This command will create a new Flutter app project template. You need to replace <app-directory> with the desired directory name for your new project.

Once the new project is created, you will need to move the following files and folders from your current project to the new one:

  • Dart code files: Move all your existing dart code files (.dart extension) from the current project’s lib/ directory to the new project’s lib/ directory.
  • Assets: If your current project has any assets like images or fonts, move those assets to the new project’s assets/ directory.
  • pubspec.yaml: Copy the pubspec.yaml file from your current project to the new project. This file contains information about your app’s dependencies and assets.

Here’s an example to help you understand the process:

Suppose your current project directory is /old-project/ and you want to create a new project directory called /new-project/. Here are the steps:

  1. Run the command flutter create -t app new-project. This will create a new Flutter project template in the /new-project/ directory.
  2. Move all your Dart code files from /old-project/lib/ to /new-project/lib/.
  3. If your current project has any assets, move those assets from /old-project/assets/ to /new-project/assets/.
  4. Copy the /old-project/pubspec.yaml file to /new-project/pubspec.yaml.

After completing these steps, you should have a new project in the /new-project/ directory that includes your existing code, assets, and pubspec.yaml file. This new project should have the correct Gradle project structure and you should be able to work on it without any issues.

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