assets_picker_ot

Quickly select resources from the gallery.

Navigator.push(context, MaterialPageRoute(builder: (_con) {
                  return PickerPage(
                    maxSelected: 3,
                    overMaxSelected: (context) {
                      debugPrint('Select up to 3 images');
                    },
                  );
                })).then((value) {
                  if (value is List<SelectedFile>) {
                    // todo selected success
                  }
                });
)

Thanks

https://github.com/fluttercandies/flutter_photo_manager