The login screen will serve two purposes: it will allow our user to log in to our app, or to sign up and obtain an identity. We'll use email and password authentication, so we'll need to design a screen that allows the input of a login and a password. We won't need or use any other data from our users. We will proceed as follows:
- Back in the app code, let's create a new file in the screens folder and call it login_screen.dart.
- Inside the login_screen.dart file, we'll import the material.dart library, and create a new stateful widget using the stful shortcut. We'll call this widget LoginScreen.
- Inside the _LoginScreenState class, we'll create a few state-level variables, such as those shown in the following ...
