first commit

lib/states/root.dart

@@ -0,0 +1,94 @@
+// import 'dart:async';
+import 'dart:convert';
+import 'package:barcode_absensi/page/login.dart';
+import 'package:barcode_absensi/page/scanQRcode.dart';
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:barcode_absensi/states/statePetugas.dart';
+
+class Root extends StatefulWidget {
+  // Root({Key key}) : super(key: key);
+
+  @override
+  _RootState createState() => _RootState();
+}
+
+class _RootState extends State<Root> {
+  late SharedPreferences sharedPreferences;
+  int _isLoading = 0;
+
+  @override
+  // ignore: avoid_void_async
+  void didChangeDependencies() async {
+    super.didChangeDependencies();
+    sharedPreferences = await SharedPreferences.getInstance();
+    final json = sharedPreferences.getString("dataPetugas");
+    final data1 = json != null ? jsonDecode(json) : null;
+    // print(data1);
+    if (sharedPreferences.getString("dataPetugas") != null) {
+      if (data1?['level'] == 'petugas') {
+        final StatePetugas _petugas =
+            Provider.of<StatePetugas>(context, listen: false);
+
+        try {
+          final String _returnString = await _petugas.loginPetugas(
+              data1!['username'].toString(), data1!['password'].toString());
+
+          // print(_returnString);
+
+          if (_returnString == 'success') {
+            setState(() {
+              // _login = false;
+              _isLoading = 2;
+            });
+          } else {
+            sharedPreferences.remove('dataPetugas');
+            ScaffoldMessenger.of(context).showSnackBar(
+                const SnackBar(content: Text('Sila Login Kembali')));
+            setState(() {
+              // _login = false;
+              _isLoading = 1;
+            });
+          }
+        } catch (e) {
+          // print(e);
+          sharedPreferences.remove('dataPetugas');
+          ScaffoldMessenger.of(context).showSnackBar(
+              const SnackBar(content: Text('Sila Login Kembali')));
+          setState(() {
+            _isLoading = 1;
+            // _login = false;
+          });
+        }
+      }
+    } else {
+      setState(() {
+        // _login = false;
+        _isLoading = 1;
+      });
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    late Widget retVal;
+    switch (_isLoading) {
+      case 0:
+        retVal = Scaffold(
+          appBar: AppBar(
+            title: const Text("Loading"),
+          ),
+          body: const Center(child: CircularProgressIndicator()),
+        );
+        break;
+      case 1:
+        retVal = LoginPage();
+        break;
+      case 2:
+        retVal = ScanQRCode();
+        break;
+    }
+    return retVal;
+  }
+}