copyWithPrevious method

@override AsyncError<T> copyWithPrevious(AsyncValue<T> previous, { bool isRefresh = true, })

Clone an AsyncValue, merging it with previous.

When doing so, the resulting AsyncValue can contain the information about multiple state at once. For example, this allows an AsyncError to contain a value, or even AsyncLoading to contain both a value and an error.

The optional isRefresh flag (true by default) represents whether the provider rebuilt by Ref.refresh/Ref.invalidate (if true) or instead by Ref.watch (if false). This changes the default behavior of when and sets the isReloading/ isRefreshing flags accordingly.

Implementation

@override
AsyncError<T> copyWithPrevious(
  AsyncValue<T> previous, {
  bool isRefresh = true,
}) {
  return AsyncError._(
    error,
    stackTrace: stackTrace,
    isLoading: isLoading,
    value: previous.valueOrNull,
    hasValue: previous.hasValue,
  );
}