criada tela_agenda.dart

lib/main.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:rkm_educa_app/telas/tela_login.dart';
 
 class PostHttpOverrides extends HttpOverrides{
@@ -21,7 +22,16 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
+      localizationsDelegates: [
+        GlobalMaterialLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+      ],
+      supportedLocales: [
+        const Locale('pt','BR')
+      ],
       debugShowCheckedModeBanner: false,
+      locale: const Locale('pt'),
       home: TelaLogin(),
     );
   }