listenTo method Null safety
- String documentId,
- SimpleImageChanged changed,
- {SimpleImageErrorHandler? errorHandler}
override
Implementation
@override
StreamSubscription<SimpleImageModel?> listenTo(
String documentId, SimpleImageChanged changed,
{SimpleImageErrorHandler? errorHandler}) {
var stream =
simpleImageCollection.doc(documentId).snapshots().asyncMap((data) {
return _populateDocPlus(data);
});
var theStream = stream.listen((value) {
changed(value);
});
theStream.onError((theException, theStacktrace) {
if (errorHandler != null) {
errorHandler(theException, theStacktrace);
}
});
return theStream;
}