Web我想一個一個地運行它們，但是當第一個 function 完成時，第二個 function 必須等待 秒。 我為此嘗試了 Future.delayed ，但它沒有用。 ... 為什么在 initState() 中使用 … WebOct 4, 2024 · What you want is probably: @override void initState () { super.initState (); context.read (userStreamProvider.last).then ( (user) { print ('user $user'); }); } By reading userStreamProvider.last, you will be able to wait for the user to be loaded. You can then use .then or await like with all futures. Share Improve this answer Follow
How to call and wait async function done inside sync …
WebThe callAsyncFetch function could be an HTTP call, a Firebase call, or a call to SharedPreferences or SQLite, etc. Anything that returns a Future 🔮. So, can we make the build method async? 🤔 class MyWidget extends StatelessWidget { @ override Future < Widget > build ( context ) async { var data = await callAsyncFetch (); return Text ... WebYou can create an async method and call it inside your initState @override void initState () { super.initState(); WidgetsBinding.instance.addPostFrameCallback((_){ _asyncMethod(); }); } _asyncMethod() async { … the schilling barn salem oregon
flutter - Riverpod : Access Provider in initState method - Stack Overflow
WebMay 14, 2024 · First, you should keep in mind that the async keyword is not what makes a function asynchronous. The async keyword simply enables the use of the await keyword (which itself is syntactic sugar for registering a Future.then callback) and (mostly) requires that the function be declared to return a Future. (I say "mostly" because returning void ... WebApr 9, 2024 · Wiro. 63 5. The then () indicates that you're dealing with data that is loaded asynchronously. The code outside of the then may run before the data is loaded. For that reason all data that needs the data, has to be inside the then callback. You may also consider using async / await for it. WebJun 16, 2024 · Method 1 : Create an async method and call it from you initState () method like shown below: @override void initState () { super.initState (); asyncMethod (); } void asyncMethod () async { await asyncCall1 (); await asyncCall2 (); // .... } Share Improve this answer Follow answered Jun 16, 2024 at 16:35 Kalpesh Khandla 708 1 9 20 the schiller\\u0027s p/e