如何将本地文件保存到 Flutter 的 assets 文件夹中

Question

My flutter desktop application takes a local file (audio/video/image) as user input. Now I need to save it to somewhere for later usage. So that even if the device changes the application can still access them using relative path.

What I want to do is copy this file to assets folder using file.copy method. But how can I get the assets folder's directory? I don't want to hardcode assets folder's absolute path. Is there any way to copy files into assets folder using relative path?

Or any alternate way to do the task?

Answer 1

assets is read-only. Use documents directory where the application can store files that only it can access.

final directory = await getApplicationDocumentsDirectory();

See Read and write files for details.