inserido icone android, logo,ajustada a tela home e login

lib/screens/login_screen.dart

@@ -3,6 +3,7 @@ import 'package:intl/intl.dart';
 import 'package:rkm/utils/color_palette.dart';
 import 'package:rkm/utils/const_variable.dart';
 import 'package:rkm/widgets/button_default.dart';
+import 'package:rkm/widgets/dropdown_button_city.dart';
 import 'package:rkm/widgets/input_text.dart';
 import 'package:rkm/widgets/text_default.dart';
 
@@ -20,26 +21,18 @@ class _LoginScreenState extends State<LoginScreen> {
   String error = '';
   String? now;
   String? selectCity;
+  bool validatorDropDown= false;
 
   checkLogin(){
     if(inputUser.text.isNotEmpty && inputPassword.text.isNotEmpty && inputUser.text == 'teste' && inputPassword.text == '123'){
       if(selectCity!=null){
-        if(selectCity=='Piracicaba'){
           setState(() {
             error = '';
-            inputPassword.clear();
-            inputUser.clear();
-            selectCity = null;
           });
           Navigator.pushNamed(context, '/home');
-        }else{
-          setState(() {
-            error = 'Unidade Inválida';
-          });
-        }
       }else{
         setState(() {
-          error = 'Selecione sua unidade';
+          error = 'Selecione sua cidade';
         });
       }
     }else{
@@ -61,67 +54,80 @@ class _LoginScreenState extends State<LoginScreen> {
   Widget build(BuildContext context) {
 
     double width = MediaQuery.of(context).size.width;
+    double height = MediaQuery.of(context).size.height;
 
     return Scaffold(
       appBar: AppBar(
-        title: TextDefault(text: 'Login',fontSize: 30,color: ColorPalette.white),
+        centerTitle: true,
+        title: TextDefault(text: 'RKM AB - Carga Inicial',fontSize: ConstVariable().fontSizeTitleAppBar,color: ColorPalette.white),
       ),
-      bottomSheet: Padding(
-        padding: const EdgeInsets.all(8.0),
+      bottomSheet: Container(
+        color: ColorPalette.secundary,
+        padding: EdgeInsets.all(8.0),
         child: TextDefault(
           text: 'Última sincronização $now',
-          fontSize: 20,
-          color: ColorPalette.black54,
+          fontSize: 15,
+          color: ColorPalette.gray,
         ),
       ),
-      body: Container(
-        child: Center(
-            child: Column(
-              mainAxisSize: MainAxisSize.min,
-              children: [
-                TextDefault(text: 'Login',fontSize: 30),
-                SizedBox(height: 10),
-                Container(
+      body: SingleChildScrollView(
+        child: Container(
+          padding: EdgeInsets.only(top: height*0.2),
+          width: width,
+          height: height,
+          decoration: ConstVariable().backgroundGradient,
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            mainAxisAlignment: MainAxisAlignment.start,
+            children: [
+              Image.asset('assets/images/logo.PNG',width: width*0.4),
+              SizedBox(height: 10),
+              Form(
+                autovalidateMode: AutovalidateMode.onUserInteraction,
+                child: Container(
                   width: width*0.6,
-                  child: DropdownButtonHideUnderline(
-                    child: DropdownButton<String>(
-                      hint: TextDefault(text: 'Selecione a cidade'),
-                        value: selectCity,
-                        items: ConstVariable().itensCity.map((value) => DropdownMenuItem(
-                            value: value,
-                            child: TextDefault(
-                              text: value,
-                            ),
-                          )
-                        ).toList(),
+                  height: height*0.3,
+                  child: ListView(
+                    children: [
+                      InputText(
+                        hint: 'Usuário',
+                        label: 'Usuário',
+                        error: 'Campo obrigatório',
+                        controller: inputUser,
+                        width: width*0.6
+                      ),
+                      InputText(
+                          hint: 'Senha',
+                          label: 'Senha',
+                          error: 'Campo obrigatório',
+                          obscure: true,
+                          controller: inputPassword,
+                          width: width*0.6
+                      ),
+                      DropDownButtonCity(
+                        error: 'Campo obrigatório',
+                        validator: validatorDropDown,
+                        select: selectCity,
                         onChanged: (value){
                           setState(() {
                             selectCity = value!;
+                            validatorDropDown = true;
                           });
-                        }
-                    ),
+                        },
+                      ),
+                    ],
                   ),
                 ),
-                InputText(
-                  hint: 'Usuário',
-                  controller: inputUser,
-                  width: width*0.6
-                ),
-                SizedBox(height: 10),
-                InputText(
-                  hint: 'Senha',
-                  obscure: true,
-                  controller: inputPassword,
-                  width: width*0.6
-                ),
-                SizedBox(height: 10),
-                TextDefault(text: error,color: ColorPalette.red),
-                ButtonDefault(
-                  onPressed: ()=>checkLogin(),
-                  title: 'Entrar'
-                ),
-              ],
-            )
+              ),
+              ButtonDefault(
+                onPressed: ()=>checkLogin(),
+                title: 'Carga Inicial',
+                width: width*0.6,
+              ),
+              SizedBox(height: 10),
+              TextDefault(text: error,color: ColorPalette.red),
+            ],
+          ),
         ),
       ),
     );