how to run a stream in different thread in dart - flutter

Question

Future<bool> checkConnection() async {
var connectivityResult = await (Connectivity().checkConnectivity());
bool connOk = false;
if (connectivityResult == ConnectivityResult.mobile) {
bool ii = await checkConnectionWithUrl();
if (ii == true) {
connOk = true;
}
} else if (connectivityResult == ConnectivityResult.wifi) {
bool ii = await checkConnectionWithUrl();
if (ii == true) {
connOk = true;
}
} else if (connectivityResult == ConnectivityResult.ethernet) {
bool ii = await checkConnectionWithUrl();
if (ii == true) {
connOk = true;
}
} else if (connectivityResult == ConnectivityResult.bluetooth) {
bool ii = await checkConnectionWithUrl();
if (ii == true) {
connOk = true;
}
} else {
connOk = false;
}
return connOk;
}
Future<bool> checkConnectionWithUrl() async {
bool response = false;
while (true) {
var checkin = await client.get(Uri.https('www.google.com', '/'));
if (checkin.statusCode == 200) {
response = true;
break;
} else {
sleep(const Duration(milliseconds: 500));
}
}
return response;
}
Stream checkStream() async* {
dynamic result = false;
while (true) {
try {
result = await checkConnection();
} catch (error) {
result = false;
} finally {
yield result;
}
await Future.delayed(const Duration(seconds: 1));
}
}
I am making a app. And I want to learn multi threading in dart. The above function what it will do is it look for wifi state every second and update the Ui. But when I run the function it will drop frams in ui. So I what to run it in a diffrent thread. can i do it.
---My main goal ---
I want to run this function in a different thread how do I do it