Since the app is only accessible to registered users, the authentication screen will be the first screen our users will be prompted to after onboarding. Here is auth_screen, this is it, we'll not make any changes in the future. =// child: SingleChildScrollView(Ĭhild: Image.asset( 'assets/AuthScreen/WelcomeScreenImage_landscape_2.png', OnPointerDown: (PointerDownEvent event) =>įocusManager. =// // to dismiss keyword on tap outside use listener Safe area prevents safe guards widgets to go beyond device edges import 'package:flutter/material.dart' Ĭlass DynamicInputWidget extends StatelessWidget) : super(key: overrideĪppBar: AppBar(title: Text(APP_)), We'll make our dynamic text form widget in text_from_widget file. Touch lib/screens/auth/auth_screen.dart lib/screens/auth/providers/auth_provider.dart lib/screens/auth/widgets/text_from_widget.dart lib/screens/auth/widgets/auth_form_widget.dart lib/screens/auth/utils/auth_validators.dart lib/screens/auth/utils/auth_utils.dartīefore we create our dynamic text form field widget, let's go over the details of how dynamic it's going to be. # cursor on the root folder # create folders mkdir lib/screens/auth lib/screens/auth/widgets lib/screens/auth/providers lib/screens/auth/utils Let's create relevant files and folders in our project. For registration, we'll have four inputs: email, username, password, and confirm password inputs, while the sign-in form only uses two inputs: email and password. We'll also write some validations for the input, and animate sign-in registration form transitions. We'll create a dynamic input form widget to be more efficient. In this chapter of the series, we'll create an authentication UI. Among them, Google's Firebase is one of the popular ones, especially for mobile applications. Serverless/Headless apps are on trend these days. Today's blog is one of the most important parts of this blog series as you can tell from the title because now, according to our user-flow screen given below, we have to authenticate the user.Īuthentication is a basic yet very important aspect of any application regardless of platform. So, far in this series, we made Splash Screen, User Onboarding System, Global Theme, and Custom widgets like the app bar, bottom navigation bar, and a drawer for our application. First of all, a special thanks to all the followers and subscribers of this blog series. This is Nibesh from Khadka's Coding Lounge. Hello and welcome to Khadka's Coding Lounge. Import 'package:flutter/material.dart' import 'package:flutter/services.Create a dynamic Input widget, a form that can transform into both sign-in and registration based on the authentication mode, animate the transition between registration and sign-in form, and validate user input. Also while we are at it, let’s add some decoration to make the UI look decent! Let us add these two properties to our CustomTextField. Another parameter that will come handy is an input length. It allows or rejects user input depending on the RegEx pattern we pass it. We use a property called inputFormatters for that. While they can always be checked for before submission, a better UX would be to let the user not make that mistake while entering itself. Taking in improper inputs from a form and processing it can cause a lot of problems. Similarly all the data changes are neatly stored in _profile. You can see the data being prefilled in the images below.Īs seen in the example, the text field will now prefill form data depending on whether it has been passed the data or not, doesn’t matter how many fields there are! Had we used controller for each text field, we would have to take care of each prefill, which does not scale properly. Enter fullscreen mode Exit fullscreen mode
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