/// Called when the bottom sheet begins to close. /// /// A bottom sheet might be prevented from closing (e.g., by user /// interaction) even after this callback is called. For this reason, this /// callback might be call multiple times for a given bottom sheet. final VoidCall...
import 'package:flutter/material.dart'; import 'package:go_router/go_router.dart'; class InitPage extends StatefulWidget { const InitPage({super.key}); @override State<InitPage> createState() => _InitPageState(); } class _InitPageState extends State<InitPage> { @override void initState() ...
Hi according to the StoreConnector 's onInit /// A function that will be run when the StoreConnector is initially created. /// It is run in the [State.initState] method. /// /// This can be useful for dispatching actions that fetch data ...
在子页面的几个回调方法中添加log,发现再次切到子页面都会触发dispose,createState,initState classMarketingScreenextendsStatefulWidget{finalStore<ReduxState>store;MarketingScreen(this.store){print('MarketingScreen constructor');}@overrideState<StatefulWidget>createState(){print('MarketingScreen createState');return_...
void initState() {assert(_debugLifecycleState == _StateLifecycle.created); } @mustCallSuper @protected void didUpdateWidget(covariant T oldWidget) { } @mustCallSuper void reassemble() { } @protected void setState(VoidCallback fn) {assert(fn != null);assert(() { if (_debugLifecycleState ...
This builder can be called multiple times (such as when the provided value change) and that is where we can rebuild our UI. The Consumer widget has two main purposes: It allows obtaining a value from a provider when we don’t have aBuildContextthat is a descendant of said provider, and...
initState() is called once and only once. It must call super.initState(). Initialize data that relies on the specific BuildContext for the created instance of the widget. Initialize properties that rely on these widgets ‘parent’ in the tree. Subscribe to Streams, ChangeNotifiers, or any ...
overlayEntry; LayerLink layerLink = LayerLink(); @override void initState() { super.initState(); focusNode.addListener(() { if (focusNode.hasFocus) { overlayEntry = createSelectPopupWindow(); Overlay.of(context)?.insert(overlayEntry!); } else { overlayEntry?.remove(); } }); } /// ...
When the widget is created, the initState method is called, which in turn calls _fetchItems. This method sends an HTTP GET request to the API endpoint using the http package and updates the widget’s state with the fetched items.The widget’s build method returns a Scaffold with an App...
Ecosystem and Libraries: Node.js has a vast ecosystem supported by npm (Node package manager) with packages for almost every use case. In contrast, Flutter uses the Dart package manager called 'pub'. Performance: Flutter apps are compiled to native code, and they can achieve high performance ...