FLUTTER- I want to post and fetch datas from database - database

Question

I am working on a flutter project and I want to fetch datas which I post to database. I can post successfully (I can see them in my database) but I cannot fetch data. I want your help... please help me... the codes, explanation and the problem below here.
the code:
class GetId {
String id;
GetId({this.id});
factory GetId.fromJson(Map<String, dynamic> json) {
return GetId(
id: json["id"],
);
}
}
Future<GetId> sendData() async {
_DenemeState controls = new _DenemeState();
final response = await http.post(
"https://www.ekrts.com.tr/bloom/get.php",
body: {
"id": "${controls.idController.text.toString()}"
},
);
if (response.statusCode == 200) {
return GetId.fromJson(json.decode(response.body));
} else {
throw Exception('Failed to load album');
}
}
class _DenemeState extends State<Deneme> {
TextEditingController nameController = TextEditingController();
TextEditingController surnameController = TextEditingController();
TextEditingController idController = TextEditingController();
Future<GetId> futureGetId;
Container _getValues() {
return Container(
child: Column(
children: <Widget>[
Text(
nameController.text.toString(),
),
Text(
'textfield değeri ' + idController.text.toString(),
),
Text(
"Response: ",
)
],
),
);
}
#override
void initState() {
super.initState();
futureGetId = sendData();
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: Scaffold(
appBar: AppBar(
title: Text("Register"),
),
body: Container(
child: Center(
child: Column(
children: <Widget>[
Text(
"ad",
style: TextStyle(fontSize: 18.0),
),
TextField(
controller: nameController,
decoration: InputDecoration(hintText: 'ad'),
),
Text(
"soyad",
style: TextStyle(fontSize: 18.0),
),
TextField(
controller: surnameController,
decoration: InputDecoration(hintText: 'soyad'),
),
Text(
"id",
style: TextStyle(fontSize: 18.0),
),
TextField(
controller: idController,
decoration: InputDecoration(hintText: 'id'),
),
RaisedButton(
child: Text("Register"),
onPressed: () {
setState(() {
_getValues();
sendData();
});
},
),
_getValues(),
FutureBuilder<GetId>(
future: futureGetId,
builder: (context, snapshot) {
if (snapshot.hasData) {
return Text(snapshot.data.id);
} else if (snapshot.hasError) {
return Text("${snapshot.error}");
}
// By default, show a loading spinner.
return CircularProgressIndicator();
},
),
],
),
),
),
),
);
}
}
Explanation:
GetId class: This class contains the data from network request
Future sendData(): This class connects my database and post the data to database, I can see them.
Container _getValues(): I created to see my data from the database on screen.
And my problem, I cannot see the data on emulator screen but I can post and see on database. I hope, I could explain my problem... please help me...

Answer 1

FirebaseAuth.instance.currentUser().then((user) {
id= user.uid;
});
i hope you are asking for something like this. you can load the user id to id variable from this.