I have this IconButton which when I press it updates a field on my cloud Firestore DB.I do not get any problem if there is a healthy internet connection, how ever is there is no network or low signal I get a timed out error and this causes the app to crash. I have have wraped the function in a try{} catch{} block but still that doesn't help.
onPressed: (){
try{
Firestore.instance.runTransaction((Transaction thistransaction)async{
DocumentSnapshot docSnapshot = await thistransaction
.get(snapshotDocuments[index].reference);
await thistransaction.update(docSnapshot.reference,
{'voteUpBool':!docSnapshot['voteUpBool']});
});
}
catch(err){
print(err.toString());
}
},
you have to check internet or wifi available or not for that just add connectivity: ^0.3.1 dependency with latest version and follow the below code.
import 'dart:io';
...
try {
final result = await InternetAddress.lookup('google.com');
if (result.isNotEmpty && result[0].rawAddress.isNotEmpty) {
print('connected');
}
} on SocketException catch (_) {
print('not connected');
}