Replaces the data event handler of this subscription.
The handleData
function is called for each element of the stream after this function is called. If handleData
is null
, further elements are ignored.
This method replaces the current handler set by the invocation of Stream.listen or by a previous call to onData.
void onData(void handleData(T data));
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-async/StreamSubscription/onData.html