LoaderWidget<Content extends Object> constructor

const LoaderWidget<Content extends Object>({
  1. Key? key,
  2. required LoaderBloc<Content> blocProvider(),
  3. required LoaderBuilder<Content> builder,
  4. LoaderMessageHandler<Content>? messageHandler,
})

Construct a LoaderWidget The blocProvider must be not null

The builder must be not null

The messageHandler can be null. When it is null, it will equal to _emptyMessageHandler

Implementation

const LoaderWidget({
  Key? key,
  required this.blocProvider,
  required this.builder,
  this.messageHandler,
}) : super(key: key);