how to display updated value of a list in a gridTile - flutter

Question

I have a class called Statics, which contains List variables that store number of values.
class Statics {
//24 is the maximum number of cells in gridView.
static List heatMaps = List.filled(24, "miner ID", growable: false);
static int selectedHeatMap = -1;
static List selectedMinerTemp = List.filled(24,0,growable: false);
static List isPressed = List.filled(24, false);
}
in another widget i have gridView to display the data from the lists of Statics,
the data stored in Statics changes every few seconds, when i press a tile and get the data it shows the updated data but it does not automatically update the data and you must click on the desired tile item (from the list of data) again.
here is my gridView:
GridView.count(
crossAxisCount: 3,
children: List.generate(
selectItemsNumber(selectedValue3), (index) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: GestureDetector(
onTap: () {
/////////////here////////////
Statics.selectedHeatMap = index;
Navigator.pushNamed(context, "/listOfMiners",
arguments: selectedValue2);
},
child: Container(
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisAlignment:
MainAxisAlignment.center,
children: [
SizedBox(
height: 10,
),
Text(
Statics.heatMaps[index],
// widget.selectedMiner.toString(),
style: TextStyle(fontSize: 13),
),
Text(
Statics.selectedMinerTemp[index]
.toString(),
// widget.selectedMiner.toString(),
style: TextStyle(fontSize: 13),
),
],
),
),
width: 100,
height: 100,
color:Statics.isPressed[index] == false ? Colors.white : colorPicker(
Statics.selectedMinerTemp[index])),
),
);
}),
),
and this my method to catch the data:
Stream<GroupsStates?> streamItems() async* {
yield* Stream.periodic(Duration(seconds: 5), (_) async {
final client = ClientChannel(
LoginState.ipServerController.text,
port: 10000,
options: ChannelOptions(
credentials: ChannelCredentials.insecure(),
),
);
final stub = EngineClient(client);
try {
var result = (await stub.groupsStatesAll(Void()));
return result;
} catch (e) {
print('Cuaght error: $e');
} }).asyncMap((event) async => await event);
}