AsyncCallback typedef

AsyncCallback = Future<void> Function()

Signature of callbacks that have no arguments and return no data, but that return a Future to indicate when their work is complete.

See also:

• VoidCallback, a synchronous version of this signature.
• AsyncValueGetter, a signature for asynchronous getters.
• AsyncValueSetter, a signature for asynchronous setters.

Implementation

typedef AsyncCallback = Future<void> Function();