Refresh flutter DataTable when alertdialog pressed - flutter

Question

Problem :
Im trying to delete data from Flutter DataTable, when i pressed the alertdialog and click yes the Data already deleted on the Database but the data still shown in the screen until i click the back navigation button and back to list of user.
Expected :
The Datatable should automatically refreshed with current data minus the data that i deleted earlier.
Datatable
// ignore_for_file: deprecated_member_use
import 'package:flutter/material.dart';
import 'package:flutter_auth/Models/nasabah.dart';
import 'package:flutter_auth/network/nasabah_service.dart';
import 'package:flutter_auth/screens/Menu/DataNasabah/detailnasabah.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'dart:convert';
class DataNasabah extends StatefulWidget {
#override
_DataNasabahState createState() => _DataNasabahState();
}
class _DataNasabahState extends State<DataNasabah> {
String nama_debitur = '';
List<Nasabah> _nasabah = [];
#override
void initState() {
super.initState();
_loadUserData();
_getNasabah();
}
_loadUserData() async {
SharedPreferences localStorage = await SharedPreferences.getInstance();
var user = jsonDecode(localStorage.getString('user'));
if (user != null) {
setState(() {
nama_debitur = user['nama_debitur'];
});
}
}
_getNasabah() {
NasabahService.getUser().then((nasabah) {
if (mounted) {
setState(() {
_nasabah = nasabah;
});
}
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
title: Text('Data Nasabah'),
// backgroundColor: Color(0xff151515),
// automaticallyImplyLeading: false,
),
body: SingleChildScrollView(
child: PaginatedDataTable(
rowsPerPage: 10,
header: Align(
alignment: Alignment.center,
child: Text(
'Data Nasabah',
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
),
),
// Text("Data Nasabah"),
columns: [
DataColumn(
label: Expanded(
child: Text(
'ID Nasabah',
textAlign: TextAlign.center,
)),
),
DataColumn(
label: Expanded(
child: Text(
'Nama Nasabah',
textAlign: TextAlign.center,
)),
),
DataColumn(
label: Expanded(
child: Text(
'Aksi',
textAlign: TextAlign.center,
)),
),
],
source: NasabahDataTableSource(userData: _nasabah, context: context),
),
),
);
}
}
class NasabahDataTableSource extends DataTableSource {
BuildContext context;
NasabahDataTableSource({this.context, this.userData});
final List<Nasabah> userData;
#override
DataRow getRow(int index) {
return DataRow.byIndex(
index: index,
cells: [
DataCell(Align(
alignment: Alignment.center,
child: Text(
"${userData[index].id}",
))),
DataCell(Align(
alignment: Alignment.center,
child: Text("${userData[index].nama_debitur}"),
)),
DataCell(
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
IconButton(
icon: Icon(Icons.navigate_next),
color: Colors.blueAccent,
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => DetailNasabah(
nasabah: userData[index],
),
),
);
},
),
IconButton(
icon: Icon(Icons.delete),
color: Colors.red,
onPressed: () {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: Text('Hapus Data Nasabah'),
content: Text(
'Apakah anda yakin ingin menghapus data nasabah ini?'),
actions: [
FlatButton(child: Text('Yes'), onPressed: () {
NasabahService.deleteUser(userData[index].id);
Navigator.pop(context);
})
],
),
);
},
)
],
),
),
// DataCell(
// FlatButton(
// child: Icon(
// Icons.chevron_right,
// color: Colors.red,
// ),
// onPressed: () {
// Navigator.push(
// context,
// MaterialPageRoute(
// builder: (context) => DetailNasabah(
// nasabah: userData[index],
// ),
// ),
// );
// },
// ),
// ),
],
);
}
#override
bool get isRowCountApproximate => false;
#override
int get rowCount => userData.length;
#override
int get selectedRowCount => 0;
void sort<T>(Comparable<T> getField(Nasabah d), bool ascending) {
userData.sort((Nasabah a, Nasabah b) {
if (!ascending) {
final Nasabah c = a;
a = b;
b = c;
}
final Comparable<T> aValue = getField(a);
final Comparable<T> bValue = getField(b);
return Comparable.compare(aValue, bValue);
});
notifyListeners();
}
}
Api
import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:shared_preferences/shared_preferences.dart';
class Network {
final String _url = 'http://192.168.100.207:8080/api/';
// 192.168.1.2 is my IP, change with your IP address
var token;
_getToken() async {
SharedPreferences localStorage = await SharedPreferences.getInstance();
token = jsonDecode(localStorage.getString('token'));
}
auth(data, apiURL) async {
var fullUrl = _url + apiURL;
return await http.post(fullUrl,
body: jsonEncode(data), headers: _setHeaders());
}
getData(apiURL) async {
var fullUrl = _url + apiURL;
await _getToken();
return await http.get(
fullUrl,
headers: _setHeaders(),
);
}
deleteData(apiURL, id) async {
var fullUrl = _url + apiURL + '/' + id.toString();
await _getToken();
return await http.delete(
fullUrl,
headers: _setHeaders(),
);
}
_setHeaders() => {
'Content-type': 'application/json',
'Accept': 'application/json',
'Authorization': 'Bearer $token',
};
}
Service
import 'package:flutter_auth/Models/nasabah.dart';
import 'api.dart';
import 'dart:convert';
class NasabahService {
static String baseUrl = "mstdebitur";
static Future<List<Nasabah>> getUser() async {
final response = await Network().getData(baseUrl);
List<Nasabah> list = parseResponse(response.body);
return list;
}
static Future<List<Nasabah>> deleteUser(id) async {
final response = await Network().deleteData(baseUrl, id);
List<Nasabah> list = parseResponse(response.body);
return list;
}
static List<Nasabah> parseResponse(String responseBody) {
final parsed = json.decode(responseBody).cast<Map<String, dynamic>>();
return parsed.map<Nasabah>((json) => Nasabah.fromJson(json)).toList();
}
}