It is fundamental to include a login page in the mobile app development procedure. In this article, I will provide you with instructions on how to develop a login page in Flutter, a widely used framework for constructing apps that work on multiple platforms.
First and foremost, let’s start by setting up our Flutter project. Make sure you have Flutter installed on your machine and create a new Flutter project using the command:
flutter create login_app
Next, navigate to the project directory using:
cd login_app
Now that we have our project set up, let’s create a new Flutter widget for our login page. In Flutter, everything is a widget, so we’ll be creating a new StatelessWidget that represents our login page.
class LoginPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Login Page'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextFormField(
decoration: InputDecoration(
labelText: 'Email',
),
),
SizedBox(height: 20),
TextFormField(
obscureText: true,
decoration: InputDecoration(
labelText: 'Password',
),
),
SizedBox(height: 20),
ElevatedButton(
onPressed: () {
// Perform login functionality
},
child: Text('Login'),
),
],
),
),
);
}
}
Here, we’re using the Scaffold widget to provide the basic structure for our login page. Inside the Scaffold, we have a Column widget that contains a TextFormField for email input, another TextFormField for password input, and an ElevatedButton for the login action.
Now that we have our login page widget set up, we need to add it to our app’s main entry point, which is usually the main.dart file. Open the lib/main.dart file and replace the existing code with the following:
import 'package:flutter/material.dart';
import 'login_page.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Login App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: LoginPage(),
);
}
}
In this code snippet, we’re importing our newly created LoginPage widget and setting it as the home of our app.
Adding Personal Touches
Now that we have the basic login page set up, it’s time to add some personal touches to make it unique. Let’s customize the colors and styles of our login page.
To change the primary color of the app, open the lib/main.dart file again and modify the theme property of the MaterialApp widget:
theme: ThemeData(
primaryColor: Colors.deepPurple,
),
Feel free to experiment with different colors to match your app’s branding.
Next, let’s add some styling to our input fields. Flutter provides various customization options for form fields. For example, you can change the background color, border color, and text color of the input fields. Play around with the decoration property of the TextFormField widget to achieve the desired style.
Lastly, don’t forget to add functionality to the login button. Inside the onPressed property of the ElevatedButton widget, you can define the login logic, such as validating the user’s credentials and navigating to the next screen.
Conclusion
In this article, we explored the process of creating a login page in Flutter. We started by setting up a new Flutter project, creating a login page widget, and integrating it into our app’s main entry point. We also discussed adding personal touches, such as custom colors and styles, to make the login page unique to our app.
Remember, the login page is often the first interaction users have with your app, so it’s essential to create a user-friendly and visually appealing design. By following the steps outlined in this article and adding your personal touches, you’ll be able to create a login page that not only functions well but also delights your users.
To see the complete code for this login page, you can find it on GitHub here.