Flutter With Praveen

     When building mobile applications, data storage is crucial. One of the most common ways to store data locally on a device is through SQLite, a lightweight database. In this blog post, we will guide you through how to use SQLite in Flutter, enabling you to create efficient, offline-friendly apps. What is SQLite? SQLite is a popular database engine that's embedded into mobile devices. It's perfect for applications that need to store small to medium amounts of structured data locally. With SQLite in Flutter, you can easily save and retrieve data without an internet connection. Why Use SQLite in Flutter? Local storage : Store data on the user's device, ensuring accessibility even when offline. Lightweight : Efficient and fast for small to medium datasets. Easy to use : With the  sqflite  plugin, Flutter integrates smoothly with SQLite. Step 1: Add the Required Libraries To use SQLite in Flutter, you need to add the  sqflite  library, which provides SQ...

 In today’s diverse ecosystem of devices, creating a visually appealing and functional app is crucial. One of the key challenges developers face is ensuring that their user interface (UI) elements look consistent across various screen sizes. This is where Flutter's  AspectRatio  widget comes into play, allowing you to maintain the proportions of your widgets effectively. What is  AspectRatio ? The  AspectRatio  widget in Flutter is designed to enforce a specific width-to-height ratio for its child widget. By defining this ratio, you can ensure that the widget adjusts its size according to the available space, all while preserving the specified proportion. This is particularly important for media elements, such as images and videos, which need to maintain their shape regardless of the device. Why Use  AspectRatio ? Consistency : Using  AspectRatio  helps maintain visual consistency across different screen sizes. Whether your app is running on ...

  Mastering the Flutter Wrap Widget: A Guide to Responsive Layouts When building user interfaces in Flutter, one of the most effective ways to create a responsive design is by using the  Wrap widget. This powerful widget allows you to arrange multiple children in a flexible manner, automatically moving them to the next line or column as needed. In this blog post, we’ll explore the  Wrap  widget, its key features, and practical examples to help you incorporate it into your Flutter applications. What is the Wrap Widget? The  Wrap  widget is a layout widget in Flutter that arranges its children in a horizontal or vertical sequence. When there’s insufficient space, it automatically wraps the children to the next line (or column) without requiring you to manage the layout manually. This makes it particularly useful for responsive designs where screen sizes may vary across devices. Key Properties of Wrap Here are some essential properties of the  Wrap  ...

  Introduction In this blog post, we will explore how to create a simple Radio Button example in Flutter. Radio buttons are a great way to present a set of options where only one option can be selected at a time. This is commonly used for gender selection, preferences, or any binary choices. We will walk through the Flutter code required to implement a basic gender selection form using Radio Buttons . By the end of this tutorial, you will have a clear understanding of how to use Radio Buttons in Flutter and how to handle user input. What is a Radio Button? A Radio Button is a type of input control that allows users to select one option from a set of mutually exclusive options. In Flutter, you can use the Radio widget to create radio buttons, and the RadioListTile widget to combine a radio button with a text label. Example Overview In this example, we will create a simple application with two Radio Buttons for selecting Gender : Male and Female . We will also include a Submit...

  The  StreamBuilder is a widget that builds itself based on the latest snapshot of interaction with a stream. This is mainly used in applications like chat application clock applications where the widget needs to rebuild itself to show the current snapshot of data. But today we will use this to make an app for increment and decrement of the counter value. (Yeah, It boring to see the same example, but this is a perfect example to show the usage of Streams). Let’s first understand the  StreamController, streams,  and  sink  using a simple diagram. Types of Streams Single-subscription streams : Can only be listened to once. They are ideal for handling events that are intended to be consumed only once, like file I/O operations. Broadcast streams : Allow multiple listeners and are useful for distributing the same data events to multiple listeners simultaneously.   Common Use Cases File Operations : Reading or writing data to and from files in a non-blockin...

  firebase_core : any firebase_auth : anyimport 'package:flutter/material.dart' ; import 'package:firebase_core/firebase_core.dart' ; import 'package:firebase_auth/firebase_auth.dart' ; void main () async { WidgetsFlutterBinding . ensureInitialized () ; await Firebase . initializeApp () ; runApp ( MyApp () ) ; } class MyApp extends StatelessWidget { @override Widget build ( BuildContext context ) { return MaterialApp ( home : LoginPage () , ) ; } } class LoginPage extends StatefulWidget { @override _LoginPageState createState () => _LoginPageState () ; } class _LoginPageState extends State < LoginPage > { final FirebaseAuth _auth = FirebaseAuth .instance; final TextEditingController _emailController = TextEditingController () ; final TextEditingController _passwordController = TextEditingController () ; Future < void > _login () async { try { UserCredential userCredential = await _auth.signInWithEma...