I have a class Foo that has a named parameter bar. I want to make sure bar always have a value. I also have an optional variable _bar, which could be either null or having some value. I tried passing…
I am implementing a login feature in flutter using Express. I have created a login API which works absolutely fine on Postman. When correct credentials are provided a token is generated and returned. But when I use the same API…
In my Flutter application I need to allow admin users to download a CSV file with all the data entered into Firebase. To do this, admins must press a button. If they do it from the web, the file is…
I am using DropDownButtonFormField in my code. I want to add margin around it's items but am not able to do so. Here is my code: DropdownButtonFormField<String>( validator: (value) { if (value == null) { return AppStrings.pleaseSelectYourGender; } return null;…
Is there any built in widget in 'material' flutter which allows us to select minutes and seconds in a rotating dial like manner, something similar to TimePicker widget (which only allows to select a particular time in hours and minutes).…
While using the model_viewer_plus: ^1.8.0 plugin, it asks to set android:usesCleartextTraffic to true. There is a concern about safety about this .Does this lead to any security risks in the app because of using HTTP connection?
In my project I am using go_router: ^12.1.3. I am having trouble with the back button while using router.pop()/context.pop(). My route is something like /community_tab_selected/0/profile_subroute_from_community. This redirects from the Community Screen to the Profile Screen in my app. When I…
didChangeAppLifecycleState is not working. I have checked all other question related to this, but not helpful. @override void initState() { WidgetsBinding.instance.addObserver(this); super.initState(); } @override void dispose() { WidgetsBinding.instance.removeObserver(this); super.dispose(); } @override void didChangeAppLifecycleState(AppLifecycleState state) { // TODO: implement didChangeAppLifecycleState UpPrint(name:…
I try get realtime data using https api but now i move on to websocket. and it's my https api using code look like: class UpstoxService { final String accessToken = "token"; final JsonService jsonService; UpstoxService(this.jsonService); Future<String?> getInstrumentKey(String tradingSymbol) async…
little question for you.. in this picture in my dismissible widget when i drag it to right or left it will delete the items of my list . but the word just "Delete" isn't enough for me and i want…