WebJul 14, 2024 · The BlocBuilder have a optinal parameter condition that have type bool Function(State previous, State current), you need to return true if you want the widget call the builder function, and false if you don't want. This parameter is optional, and by default is true.. Because the in the condition parameter you have the previous state and the … WebAug 2, 2024 · Hello @merelj, the issue here is not with the bloc selector, in fact bloc selector is working great as the selected should not be changing. You are changing an id not the state of the Bloc for that reason the selector is not being updated. And it works when adding bloc: UsersBloc(initState) because what you are doing in there is creating a new …
How to properly use `buildWhen`? · Issue #3229 · …
WebOct 14, 2024 · the == operator the hashCode getter For example: class MyObj { String name; MyObj (this.name); @override bool operator == (Object o) { if (o is MyObj && o.runtimeType == runtimeType) { if (o.name == name) { return true; } } return false; } @override int get hashCode => name.hashCode; } Testing this: WebSep 6, 2024 · My choice of state management package is flutter_bloc. Although I love Bloc, it requires a lot of boilerplate code to implement. ... they should not be triggered in every state change of your bloc/cubit. It is better to use buildWhen conditions in your BlocBuilder or use BlocSelector to watch the value changes for improving performance … pictures of frozen shoulder
BlocBuilder class - flutter_bloc library - Dart API - Dart …
WebJan 2, 2024 · We build beautiful Flutter apps for all kinds of businesses Get a Free Consultation! Adding the Google Bloc library to your project To use the Google Bloc library, add the flutter_bloc: ^2.0.1 dependency to your … WebMar 3, 2024 · buildWhen: (previous, current) { if (previous.length WebJul 31, 2024 · /// An optional [buildWhen] can be implemented for more granular control over /// how often [BlocBuilder] rebuilds. /// [buildWhen] should only be used for performance optimizations as it /// provides no security about the state passed to the [builder] function. /// [buildWhen] will be invoked on each [bloc] `state` change. /// … pictures of frustrated people