GalleryViewField constructor
      const
      GalleryViewField({ 
    
    
- Key? key,
 - void onChanged(
- MediaEntity entity,
 - bool removed
 
 - void onSubmitted(
- List<
MediaEntity> entities 
 - List<
 - List<
MediaEntity> ? selectedEntities, - required GalleryController controller,
 - Widget? child,
 - Widget previewBuilder(
- Uint8List bytes
 
 - Size? previewSize,
 
Implementation
const GalleryViewField({
  Key? key,
  this.onChanged,
  this.onSubmitted,
  this.selectedEntities,
  required this.controller,
  this.child,
  this.previewBuilder,
  this.previewSize,
}) : super(key: key);