i'm using "SubCategoryTiles" widget all over the app. initially i was using same Group Icon but now i want to use different-different category_Icon wherever i use this widget. So i want to know how to do it. See the code…
I am using Dart but i am facing null safty issue with following code RxMap<Product,int>cartItems=Map<Product,int>().obs; void updateCart(Product product,String type){ if(type=="plus") { cartItems.value[product]++; } else { cartItems.value[product]--; } } i got the following error message the method '+' can't be unconditionally…
Simple Map here: Map map = Map<int, String>{}; I can populate it: map = {1: 'c', 2: 'dart', 3: 'flutter'}; Here I need to specify a KEY. I would like to know on how to get an auto key. I…
I am recently want to see and run some other developers code in github and clone it to run in my emulator but it showing some error like this "Running "flutter pub get" in budgex... Because budgex depends on basic_utils…
My function looks like this: Stream<QuerySnapshot> getAllLists() { late String temp = "name"; getUserSortMethod().then((value) => { temp = value.toString(), // temp is now "prio" }); return firestore .collection('lists') .where('editors', arrayContains: currentUser.email) .orderBy(temp, descending: false) .snapshots(); } I need to wait…
I have this list: List<dynamic> activityDays = []; And this code: getItems(AsyncSnapshot<QuerySnapshot> snapshot) { if (widget.user.uid.isNotEmpty) { // ignore: missing_return snapshot.data.documents.map<Column>((f) { if (f.documentID == widget.currentList.keys.elementAt(widget.i)) { f.data.forEach((a, b) { if (a == "activities") { List<dynamic> markMap = f.data['activities']; for…
i have created global method that call showDialog, whenever i call it, it wont come out if i put Navigator.pop(context) , if i remove the navigator it will come out. I cannot close the errordialog if i dont have the…
i need help with my app since iam new to flutter. so i have a button that suppossed to have a text inside it, but when i run my app, the text isnt inside the button, i dont know how…
Minimal reproducible code: void main() async { final prefs = await SharedPreferences.getInstance(); await prefs.setString('key', null); // Error } How can I set a null value in shared_preferences Note: I'm not looking for workarounds like, instead of null, use an empty…
I am new in flutter, how to set width and height OutlineButton in Flutter, i have to try input width and height inside OutlineButton but got some errors. this is my code : OutlinedButton( //width: AppSize.DIMEN_230, style: OutlinedButton.styleFrom( side: BorderSide(…