Mixing
Architecting Bloc and StreamControllers to handle events
I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.
Currently, I have different sinks I'm adding to depending on what the user is doing e.g. clicking a radio button, clicking a button to increase a counter, all in the same view. I'm searching how to handle these events in a common sink as it seems like a lot of plumbing to have a sink for each part. When I'm changing state I use different streams it's, but it's for the event handling part I'm looking around for a solution.
Any guidance to make the sink handling cleaner or is this the way to do it?
example of the current code I would like to streamline
// distance
StreamController<bool> _cmdDistanceController = StreamController<bool>();
StreamSink get distanceCommands => _cmdDistanceController.sink;
StreamController<String> _syncDistanceController =
StreamController<String>.broadcast();
Stream<String> get syncDistances => _syncDistanceController.stream;
// speed
StreamController<bool> _cmdSpeedController = StreamController<bool>();
StreamSink get speedCommands => _cmdSpeedController.sink;
StreamController<String> _syncSpeedController =
StreamController<String>.broadcast();
Stream<String> get syncSpeed => _syncSpeedController.stream;
flutter asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
|
show 2 more comments
I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.
Currently, I have different sinks I'm adding to depending on what the user is doing e.g. clicking a radio button, clicking a button to increase a counter, all in the same view. I'm searching how to handle these events in a common sink as it seems like a lot of plumbing to have a sink for each part. When I'm changing state I use different streams it's, but it's for the event handling part I'm looking around for a solution.
Any guidance to make the sink handling cleaner or is this the way to do it?
example of the current code I would like to streamline
// distance
StreamController<bool> _cmdDistanceController = StreamController<bool>();
StreamSink get distanceCommands => _cmdDistanceController.sink;
StreamController<String> _syncDistanceController =
StreamController<String>.broadcast();
Stream<String> get syncDistances => _syncDistanceController.stream;
// speed
StreamController<bool> _cmdSpeedController = StreamController<bool>();
StreamSink get speedCommands => _cmdSpeedController.sink;
StreamController<String> _syncSpeedController =
StreamController<String>.broadcast();
Stream<String> get syncSpeed => _syncSpeedController.stream;
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
"or is this the way to do it"- post some code of"this"
– pskink
Nov 21 '18 at 14:51
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
hmmm, i dont quite understand what you mean by "merge" but maybe itsStreamGroupyou are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."
– pskink
Nov 21 '18 at 14:59
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04
|
show 2 more comments
I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.
Currently, I have different sinks I'm adding to depending on what the user is doing e.g. clicking a radio button, clicking a button to increase a counter, all in the same view. I'm searching how to handle these events in a common sink as it seems like a lot of plumbing to have a sink for each part. When I'm changing state I use different streams it's, but it's for the event handling part I'm looking around for a solution.
Any guidance to make the sink handling cleaner or is this the way to do it?
example of the current code I would like to streamline
// distance
StreamController<bool> _cmdDistanceController = StreamController<bool>();
StreamSink get distanceCommands => _cmdDistanceController.sink;
StreamController<String> _syncDistanceController =
StreamController<String>.broadcast();
Stream<String> get syncDistances => _syncDistanceController.stream;
// speed
StreamController<bool> _cmdSpeedController = StreamController<bool>();
StreamSink get speedCommands => _cmdSpeedController.sink;
StreamController<String> _syncSpeedController =
StreamController<String>.broadcast();
Stream<String> get syncSpeed => _syncSpeedController.stream;
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
I'm building a Flutter app using BLoCs. I have a view where I send multiple events to the bloc and also streams data to the view.
Currently, I have different sinks I'm adding to depending on what the user is doing e.g. clicking a radio button, clicking a button to increase a counter, all in the same view. I'm searching how to handle these events in a common sink as it seems like a lot of plumbing to have a sink for each part. When I'm changing state I use different streams it's, but it's for the event handling part I'm looking around for a solution.
Any guidance to make the sink handling cleaner or is this the way to do it?
example of the current code I would like to streamline
// distance
StreamController<bool> _cmdDistanceController = StreamController<bool>();
StreamSink get distanceCommands => _cmdDistanceController.sink;
StreamController<String> _syncDistanceController =
StreamController<String>.broadcast();
Stream<String> get syncDistances => _syncDistanceController.stream;
// speed
StreamController<bool> _cmdSpeedController = StreamController<bool>();
StreamSink get speedCommands => _cmdSpeedController.sink;
StreamController<String> _syncSpeedController =
StreamController<String>.broadcast();
Stream<String> get syncSpeed => _syncSpeedController.stream;
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
edited Nov 21 '18 at 14:53
Rasmus Christensen
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
asked Nov 21 '18 at 14:34
Rasmus ChristensenRasmus Christensen
5,12773261
5,12773261
"or is this the way to do it"- post some code of"this"
– pskink
Nov 21 '18 at 14:51
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
hmmm, i dont quite understand what you mean by "merge" but maybe itsStreamGroupyou are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."
– pskink
Nov 21 '18 at 14:59
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04
|
show 2 more comments
"or is this the way to do it"- post some code of"this"
– pskink
Nov 21 '18 at 14:51
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
hmmm, i dont quite understand what you mean by "merge" but maybe itsStreamGroupyou are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."
– pskink
Nov 21 '18 at 14:59
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04
"or is this the way to do it" - post some code of "this"– pskink
Nov 21 '18 at 14:51
"or is this the way to do it" - post some code of "this"– pskink
Nov 21 '18 at 14:51
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
hmmm, i dont quite understand what you mean by "merge" but maybe its
StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."– pskink
Nov 21 '18 at 14:59
hmmm, i dont quite understand what you mean by "merge" but maybe its
StreamGroup you are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."– pskink
Nov 21 '18 at 14:59
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04
|
show 2 more comments
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"or is this the way to do it"- post some code of"this"– pskink
Nov 21 '18 at 14:51
I've updated with some code. it's the _cmdXXX controllers I would like to merge into a single controller in some smart way. Besides what you see above I have 3 more for other inputs in the same wiew
– Rasmus Christensen
Nov 21 '18 at 14:55
hmmm, i dont quite understand what you mean by "merge" but maybe its
StreamGroupyou are looking for? the docs say: "A collection of streams whose events are unified and sent through a central stream."– pskink
Nov 21 '18 at 14:59
Ohhh haven't heard of StreamGroup, but yes central is what I'm looking for. A central sink I can use instead of exposing two. This would require I add something else than bool
– Rasmus Christensen
Nov 21 '18 at 15:02
a stream ID (indicating the type of command) or something?
– pskink
Nov 21 '18 at 15:04