From e8b6d6d6bbac2ebef97f19f98829b77ca94113b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Huertas?=
 <123009293+huertin03@users.noreply.github.com>
Date: Fri, 28 Jul 2023 19:51:59 +0200
Subject: [PATCH] Update login_screen.dart

to validate if form.validate() is false or true, you have to assure it is not null first.
---
 chapter_05/lib/login_screen.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chapter_05/lib/login_screen.dart b/chapter_05/lib/login_screen.dart
index f5ee105..012d50e 100644
--- a/chapter_05/lib/login_screen.dart
+++ b/chapter_05/lib/login_screen.dart
@@ -67,7 +67,8 @@ class _LoginScreenState extends State<LoginScreen> {
 
   void _validate() {
     final form = _formKey.currentState;
-    if (!form.validate()) {
+    bool correctValidation = form?.validate() ?? false;
+    if (!correctValidation) {
       return;
     }
     final name = _nameController.text;