IMei Works finaly

lib/screens/auth/login_screen.dart

@@ -7,39 +7,70 @@ import 'package:shared_preferences/shared_preferences.dart';
 import '../../widgets/auth/auth_header.dart';
 import '../../widgets/auth/login_form.dart';
 
-class Loginsreen extends StatelessWidget {
+class Loginsreen extends StatefulWidget {
+  @override
+  _LoginsreenState createState() => _LoginsreenState();
+}
+
+class _LoginsreenState extends State<Loginsreen> {
   Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
-  int platformImei;
+
+  String platformImei;
+
+  Future<String> platformImeiText;
+
   Future<void> _incrementCounter() async {
     final SharedPreferences prefs = await _prefs;
     final int counter = (prefs.getInt('counter') ?? 0) + 1;
-      platformImei = prefs.getInt('platformImei'); 
+    platformImei = prefs.getString('platformImei');
     // setState(() {
-      print('platformImei'+platformImei.toString());
+    print(platformImei);
     prefs.setInt("counter", counter).then((bool success) {
       return counter;
       // });
     });
   }
+
   @override
-  Widget build(BuildContext context) {
+  void initState() {
+    super.initState();
+    platformImeiText = _prefs.then((SharedPreferences prefs) {
+      return (prefs.getString('platformImei'));
+    });
+  }
 
+  @override
+  Widget build(BuildContext context) {
     // prefs.setInt("counter", 1);
     _incrementCounter();
     return Scaffold(
       backgroundColor: Colors.white,
       body: SingleChildScrollView(
-        child: Container(
+        child: FutureBuilder(
+            future: platformImeiText,
+            builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
+              switch (snapshot.connectionState) {
+                case ConnectionState.waiting:
+                  return const CircularProgressIndicator();
+                default:
+                  if (snapshot.hasError) {
+                    return Text('Error: ${snapshot.error}');
+                  } else {
+                    return Container(
                         margin: EdgeInsetsDirectional.fromSTEB(30, 0, 0, 0),
                         alignment: Alignment.topLeft,
                         child: Column(
                             crossAxisAlignment: CrossAxisAlignment.start,
                             children: <Widget>[
                               AuthHeader(),
-                  platformImei == null?LoginForm():KnownUserLogin(),
+                              (platformImei == null)
-                ])),
+                                  ? LoginForm()
+                                  : KnownUserLogin(),
+                            ]));
+                  }
+              }
+            }),
       ),
     );
   }
 }
-

lib/widgets/auth/login_form.dart

@@ -154,7 +154,6 @@ class _LoginFormState extends State<LoginForm> {
               //
               Container(
                 decoration: BoxDecoration(
-                  
                   borderRadius: BorderRadius.all(Radius.circular(10.0)),
                   // border: Border.all(color: Theme.of(context).primaryColor),
                 ),
@@ -258,8 +257,9 @@ class _LoginFormState extends State<LoginForm> {
   }
 
   insertDeviceImei(res, AuthProvider authProv) {
+    if (_platformImei != 'Unknown') {
       var imeiInfo = {
-      "IMEI": _platformImei.toString(),
+        "IMEI": _platformImei,
         "LogInType": 1,
         "DoctorID": res['DoctorID'],
         "DoctorName": "Test User",
@@ -284,6 +284,7 @@ class _LoginFormState extends State<LoginForm> {
         print(err);
       });
     }
+  }
 
   // Platform messages are asynchronous, so we initialize in an async method.
   Future<void> initPlatformState() async {
@@ -313,8 +314,10 @@ class _LoginFormState extends State<LoginForm> {
     Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
     final SharedPreferences prefs = await _prefs;
 
-    prefs.setInt(key, value).then((bool success) {
+    prefs.setString(key, value).then((bool success) {
-      return;
+      print('EEEEEEEEEEee');
+      print(prefs.getString('platformImei'));
+      return value;
     });
   }