Consider this first example: Future<void> initializeServices() async { await notificationService.begin(); await geotrackingService.begin(); Navigator.of(context).pop(); // Don't use 'BuildContext's across async gaps. } Now, consider this second example: Future<void> initializeServices() async { await notificationService.begin(); await geotrackingService.begin(); exitScreen(); // exitScreenAsync(); } void exitScreen()…
How to fix this kind of errors when using then? void handleSubmitWrapper() { final future = handleSubmit(); future.then(context.loaderOverlay.hide()); // error } Future<void> handleSubmit() async { ... } This expression has a type of 'void' so its value can't be used.…
enter image description here here you can see. I am using Visual Stdio Code for Flutter development. I want to create the file like "assets/images" . Already i delete and recreate the file for several times but the problem is…
Design of the web I am building I am trying to build the website as per the design, however I have been getting overflowed errors. I am looking for advice/s on how I can avoid these errors, I am using…
This is how my splash screen appears, so how can I make it that the logo is filling up the rounded circle shape, and how can i make it that so I can add a background image
For example, I have the following two dynamic maps that have the same keys and values: Map a = { 'name':'alex', 'products': {'type':'cars'}, 'rate':100, 'others':['not yet'] }; Map b = { 'name':'alex', 'products': {'type':'cars'}, 'rate':100, 'others':['not yet'] }; when i…
I have this code below and it almost works I think, but it is not quite there. Essentially what I am trying to do it use a StreamBuilder to watch a database stream. This table may be updated by any…
I have a list which contains widgets (messages) , the problem is that i can't delete last item from list. I already tried messages.remove(Widget); messages.removeAt(index); I even tried messages.clear()| But it also doesn't work.... I can delete all message except…
In a chat app I'm trying to query Firestore and return the other user's name as a String from a 'Contacts' collection. I'm still trying to wrap my head around async and Futures in dart, so when I return this,…
i have the following List List myList = [ {'name':'Alex'}, {'name':'Ali'}, {'name':'jack'}, {'name':'Alex'}, {'name':'Alex'}, ]; Now i want update all item that the name == 'Alex' to 'Andy' so i tried the following int wantedIndex = myList.indexWhere((element) => element['name']=='Alex'); myList[wantedIndex]…