implemented Settings functions

lib/objects/cloud_service_api.dart

@@ -7,7 +7,7 @@ import 'dart:developer';
 Future<Map<String, dynamic>> readJson() async {
   final data = await rootBundle.loadString('config/credentials.json');
   var data_ = json.decode(data) as Map<String, dynamic>;
-  debugPrint(data_.toString());
+  log("loaded json input $data_");
   return data_;
 }
 
@@ -16,6 +16,8 @@ class CloudServiceAPI {
   static late Future loadJson;
   static late String basicAuth;
   static late String address;
+  static late String username;
+  static late String password;
   static late Map<String, String> headers;
   static bool initState = false;
 
@@ -28,8 +30,8 @@ class CloudServiceAPI {
 
   Future loadConfig() async{
     credentials = await readJson();
-    String username = credentials['username'];
-    String password = credentials['password'];
+    username = credentials['username'];
+    password = credentials['password'];
     address = credentials['address'];
     basicAuth = 'Basic ${base64.encode(utf8.encode('$username:$password'))}';
     headers = {
@@ -37,6 +39,15 @@ class CloudServiceAPI {
       'content-type': 'application/json',
       'accept': 'application/json',
     };
+    log("init Config $headers");
+  }
+  void reloadConfig() {
+    basicAuth = 'Basic ${base64.encode(utf8.encode('$username:$password'))}';
+    headers = {
+      'authorization': basicAuth,
+      'content-type': 'application/json',
+      'accept': 'application/json',
+    };
   }
   Future<List> getDevices() async {
     var url = Uri.https(address, '/api/devices');
@@ -70,4 +81,25 @@ class CloudServiceAPI {
     debugPrint('Error createDevice: ${r.statusCode.toString()}');
     return false;
   }
+  String getAddress(){
+    return address;
+  }
+  String getUsername(){
+    return username;
+  }
+  String getPassword(){
+    return password;
+  }
+  void setAddress(String input){
+    address = input;
+    reloadConfig();
+  }
+  void setUsername(String input){
+    username = input;
+    reloadConfig();
+  }
+  void setPassword(String input){
+    password = input;
+    reloadConfig();
+  }
 }

lib/screens/bluetooth_screen.dart

@@ -145,3 +145,6 @@ class _BluetoothScreen extends State<BluetoothScreen> {
         fontSize: 16.0);
   }
 }
+
+class BluetoothScan{
+}

lib/screens/cloud_service_ui.dart

@@ -1,11 +1,11 @@
 import 'dart:convert';
-
+import 'dart:developer';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 import 'package:flutter_provisioning_for_iot/objects/cloud_service_api.dart';
 import 'package:flutter_provisioning_for_iot/widgets/sidebar.dart';
-
+import 'package:shared_preferences/shared_preferences.dart';
 
 class CloudService extends StatefulWidget {
   const CloudService({Key? key}) : super(key: key);
@@ -24,7 +24,8 @@ Future<Map<String, dynamic>> readJson() async {
 class _CloudService extends State<CloudService>{
 
   late final Map<String, dynamic> credentials;
-  final CloudServiceAPI cloudServiceAPI = CloudServiceAPI();
+  CloudServiceAPI cloudServiceAPI = CloudServiceAPI();
+  static SharedPreferences? preferencesInstance;
 
   @override
   Widget build(BuildContext context) {

lib/screens/main_page.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_provisioning_for_iot/objects/cloud_service_api.dart';
 import 'package:flutter_provisioning_for_iot/widgets/sidebar.dart';
 
 import '../objects/create_material_color.dart';
@@ -38,7 +39,7 @@ class MyHomePage extends StatefulWidget {
 
 class _MyHomePageState extends State<MyHomePage> {
   int _counter = 0;
-
+  CloudServiceAPI cloudServiceAPI = CloudServiceAPI();
   void _incrementCounter() {
     setState(() {
       _counter++;

lib/screens/settings.dart

@@ -1,21 +1,15 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:flutter_provisioning_for_iot/objects/cloud_service_api.dart';
 
 import '../widgets/sidebar.dart';
 
 class Settings extends StatefulWidget {
   const Settings({Key? key}) : super(key: key);
+  static CloudServiceAPI cloudService = CloudServiceAPI();
 
-  static const initIp = "";
-
-  static var ip = initIp;
-
-  static const initPort = "";
-
-  static var port = initPort;
-
-  static SharedPreferences? preferencesInstance;
+  static String address = cloudService.getAddress();
+  static String username = cloudService.getUsername();
+  static String password = cloudService.getPassword();
 
   @override
   State<Settings> createState() => _SettingsState();
@@ -40,23 +34,31 @@ class _SettingsState extends State<Settings> {
               TextFormField(
                 decoration: const InputDecoration(
                     labelText: "Address for the Device Manager"),
-                initialValue: Settings.ip,
+                initialValue: Settings.address,
+                keyboardType: TextInputType.text,
                 onChanged: (String newValue) {
-                  Settings.ip = newValue;
-                  Settings.preferencesInstance?.setString("IP", newValue);
+                  Settings.address = newValue;
+                  Settings.cloudService.setAddress(newValue);
                 },
               ),
               TextFormField(
                 decoration: const InputDecoration(
-                    labelText: "Port for the Device Manager"),
-                keyboardType: TextInputType.number,
-                inputFormatters: <TextInputFormatter>[
-                  FilteringTextInputFormatter.digitsOnly
-                ],
-                initialValue: Settings.port,
+                    labelText: "Username"),
+                keyboardType: TextInputType.text,
+                initialValue: Settings.username,
                 onChanged: (String newValue) {
-                  Settings.port = newValue;
-                  Settings.preferencesInstance?.setString("Port", newValue);
+                  Settings.username = newValue;
+                  Settings.cloudService.setUsername(newValue);
+                },
+              ),
+              TextFormField(
+                decoration: const InputDecoration(
+                    labelText: "Password"),
+                keyboardType: TextInputType.text,
+                initialValue: Settings.password,
+                onChanged: (String newValue) {
+                  Settings.password = newValue;
+                  Settings.cloudService.setPassword(newValue);
                 },
               )
             ],