interface OnLoadCanceledListener<D : Any!>
Interface that is implemented to discover when a Loader has been canceled before it finished loading its data. You do not normally need to implement this yourself; it is used in the implementation of
LoaderManager to find out when a Loader it is managing has been canceled so that it can schedule the next Loader. This interface should only be used if a Loader is not being used in conjunction with LoaderManager.
Called on the thread that created the Loader when the load is canceled.