How to Save set image of PickedFile type to a image in Flutter?

You need to use path property of picked file

image: DecorationImage(image: FileImage(File(file.path)),)

If someone might struck on a similar issue

change from pickImage to getImage and still needs a File.

PickedFile selectedFile = await ImagePicker().getImage(source: source);
File selected = File(selectedFile.path);