My code includes FutureBuilder()
, which get data from Firestore, and its child widgets include GridView
.builder and TextField
widgets etc.
When I click on a TexField
(focus), the codes in FutureBuilder
are rebuild.
The following is the test code for this.
Can you tell me the cause and solution of this problem?
class TestRoom extends StatefulWidget {
TestRoom({Key? key}) : super(key: key);
@override
State<TestRoom> createState() => _TestRoomState();
}
class _TestRoomState extends State<TestRoom> {
List<RoomModel> _roomModels = [];
TextEditingController _textEditingController = TextEditingController();
bool _isTablet = false;
@override
void dispose() {
_textEditingController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
Size size = MediaQuery.of(context).size;
if (size.width >= 800) {
_isTablet = true;
} else {
_isTablet = false;
}
return Scaffold(
appBar: AppBar(),
body: Padding(
padding: EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
"Test",
style: TextStyle(
fontSize: 35,
fontWeight: FontWeight.bold,
),
),
SizedBox(
height: 20,
),
FutureBuilder(
future: _getAllRoom(),
builder: (context, snapshot) {
if (snapshot.connectionState == ConnectionState.waiting) {
return const Center(
child: CircularProgressIndicator(),
);
}
return Expanded(
child: TestList1(
isTablet: _isTablet,
roomModels: _roomModels,
isListStyle1: true,
));
},
),
],
),
),
);
}
// get user's models from firestore
Future _getAllRoom() async {
_roomModels.clear();
_roomModels.addAll(await RoomService().getAllRoomModel("userName"));
}
}
//
//
class TestList1 extends StatefulWidget {
final isTablet;
final List<RoomModel> roomModels;
final bool isListStyle1;
TestList1({
Key? key,
required this.isTablet,
required this.roomModels,
required this.isListStyle1,
}) : super(key: key);
@override
State<TestList1> createState() => _TestList1State();
}
class _TestList1State extends State<TestList1> {
TextEditingController _textEditingController = TextEditingController();
double _paddingSize = 40.0;
@override
void dispose() {
// _textEditingController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return GridView.builder(
shrinkWrap: true,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: widget.isTablet ? 6 : 3,
childAspectRatio: 1 / 1.5,
mainAxisSpacing: _paddingSize,
crossAxisSpacing: 10,
),
itemBuilder: (context, index) {
return _buildMyRooms(widget.roomModels[index], index);
},
itemCount: widget.roomModels.length,
);
}
Widget _buildMyRooms(RoomModel roomModel, int index) {
return Column(
children: [
InkWell(
onTap: () {},
child: Container(
width: 120,
height: 168,
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(
color: Colors.blue,
width: 2.0,
),
borderRadius: const BorderRadius.all(
Radius.circular(10),
),
),
),
),
SizedBox(
height: sm_padding,
),
PopupMenuButton<int>(
color: Colors.grey[100],
itemBuilder: (context) => _fileMenuItemLust(roomModel),
onSelected: _onSeletedFileMenu,
child: Column(
children: [
Container(
width: 130,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Text(
roomModel.roomName,
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: const TextStyle(
color: Colors.blue,
fontSize: 15,
),
),
),
const Icon(
Icons.arrow_drop_down_outlined,
color: Colors.blue,
),
],
),
),
],
),
)
],
);
}
// 파일 메뉴 아이템
List<PopupMenuEntry<int>> _fileMenuItemLust(RoomModel roomModel) {
_textEditingController.text = roomModel.roomName;
return [
// 파일명
PopupMenuItem(
enabled: false,
// TODO textfield
child: TextField(
controller: _textEditingController,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
),
maxLines: 1,
decoration: InputDecoration(
border: _textFieldBorder(),
enabledBorder: _textFieldBorder(),
disabledBorder: _textFieldBorder(),
focusedBorder: _textFieldBorder(),
focusColor: Colors.white60,
filled: true,
fillColor: Colors.grey.withOpacity(0.3),
isDense: true, // padding 조절을 위해 추가
contentPadding: EdgeInsets.all(sm_padding),
)),
),
const PopupMenuDivider(),
PopupMenuItem(
value: 0,
child: Row(
children: [
const Icon(
Icons.copy,
),
SizedBox(
width: sm_padding,
),
const Text(
"Menu Item1",
),
],
),
),
];
}
void _onSeletedFileMenu(value) {}
OutlineInputBorder _textFieldBorder() {
return OutlineInputBorder(
borderRadius: BorderRadius.all(Radius.circular(20)),
borderSide: BorderSide(
color: Colors.grey.withOpacity(0.3),
width: 1,
),
);
}
}
// ======================
I modified the code based on Yeasin Sheikh's answer. The existing problem has been solved, but a new problem has arisen.
I'm going to update the Firestore using onSubmitted() of TextField and then update my list using stream builder and future builder.
This is a modified part of the code above to solve an existing problem
class _TestRoomState extends State<TestRoom> {
late final myFuture = _getAllRoom(); // new
FutureBuilder(
future: myFuture, //_getAllRoom(), // change
The problem of constantly rebuilding the text field according to the focus has disappeared, but there is a problem that getAllRoom() is called only at the first time and cannot be called afterwards, so the new room list cannot be updated.
CodePudding user response:
Here future: _getAllRoom()
calls the api on every state changes.
Create a state variable for future
late final myFuture = _getAllRoom();
@override
Widget build(BuildContext context) {
And use
FutureBuilder(
future:myFuture ,
You can check Fixing a common FutureBuilder and StreamBuilder problem