I wonder if it is possible if I want to pass functions to a void function? As in the below example I have a void function as firstFunction(), then I want to pass functions like print('do something'); and print('do final…
I am confusing some Map to List conversion in dart. For example; Map<String ,dynamic> datas= "RJGas": { "unit_deatils": { "total_obs": 3, "previous_obs": 3, "difference": 0, "indicator": "green", "critical_period": [ "17:00", "17:59" ], "critical_obs": "HK" }, "zone_deatils": { "RGT Well Pads…
I want to make view with 6 buttons in 2 rows ( 1 row - 3 buttons). My problem is the buttons dont take all free space. Probably row is limiting space but i dont know how to fix it.…
enter image description here can you solve the problem? I made a flutter update. I got this error. I understood that there was an error path, but I did not understand how to fix it. I don't know how to…
My ListView.builder gives an error saying The left operand can't be null, so the right operand is never executed. Try removing the operator and the right operand The return type 'Object' isn't a 'Widget', as required by the closure's context…
A few subpages in my app do not display the content from the database right away. They show the content after I save the content (hot reload) though. There are just a few subpages in my app I notice this…
So starting out I have this simple bottomNavBar which changes pages. What I wanted to do was add a FAB bar in the middle. original bottomNavBar bottomNavigationBar: BottomNavigationBar( type: BottomNavigationBarType.fixed, currentIndex: 0, backgroundColor: Color(0xFF0066EE), selectedItemColor: Colors.white, unselectedItemColor: Colors.white, items: const…
in ExpandedPanel I put two buttons when press on the first change container contant, but setState() doesn't work to change the value of Scaffold_Syllabus* with the value of Table_Lecture***_Scaffold** the code class Syllabus extends StatefulWidget { const Syllabus({super.key}); @override State<Syllabus>…
I have a curved AppBar using the following code. I want to add a shadow right beneath the curve. Any help would be much appreciated! image of curved AppBar Code: appBar: PreferredSize( preferredSize: const Size.fromHeight(85.0), child: AppBar( title: const Text("Services"),…
Invalid constant error message for item.header. It is a boolean value representing if the list tile is going to have a bold or normal font-weight. child: ListTile( key: ValueKey(item.stuffId), title: Text( item.name, style: const TextStyle( color: Colors.blue, fontWeight: item.header ==…