How do I use hexadecimal color strings in Flutter?

Colors play a vital role in app design, and Flutter offers a range of options for setting colors, including the use of hexadecimal color strings. In this article, we’ll explore how to use hexadecimal color strings to define colors in your Flutter application. We’ll cover the basics, benefits, and practical examples to help you incorporate … Read more

Solving ‘No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp() in Flutter and Firebase

When working with Firebase in your Flutter applications, you may encounter the error message: “No Firebase App ‘[DEFAULT]’ has been created – call Firebase.initializeApp().” This error typically occurs when Firebase is not initialized correctly. In this article, we’ll explore the reasons behind this error and provide solutions to resolve it effectively. Understanding the Error The … Read more

Understanding and Resolving NoSuchMethodError in Flutter

When developing Flutter applications, you might encounter errors like NoSuchMethodError. This error occurs when a method is called on an object that doesn’t support that method. It’s a common runtime error, and understanding it is essential for effective debugging and development. In this article, we’ll explore what a NoSuchMethodError is, common causes, and strategies to … Read more

Understanding Futures in Flutter: A Comprehensive Guide

When working with Flutter, asynchronous programming is a fundamental concept that allows you to perform tasks without blocking the main thread. Futures are a crucial part of this asynchronous model in Dart, the language behind Flutter. In this comprehensive guide, we’ll dive into what a Future is and how to use it effectively in your … Read more

Making a Function Execute Every Second in Flutter

In Flutter, it’s common to perform tasks periodically, such as updating the user interface, fetching data, or running background processes. One way to achieve this is by making a function execute at regular intervals, like every second. In this article, we’ll explore how to accomplish this using Flutter. Using the Timer Class Flutter provides the … Read more

How to Programmatically call a phone number in flutter

In Flutter, you can initiate a phone call by using the url_launcher package. This package allows you to open URLs, including phone numbers, in the device’s default application, which is typically the phone app for phone numbers. Here’s how you can call a phone number in Flutter: Step 1: Add the Dependency First, add the … Read more

Post local notification in flutter

In Flutter, you can post local notifications using plugins such as flutter_local_notifications. Here’s a step-by-step guide on how to post local notifications in your Flutter app: Step 1: Add Dependency To get started, you need to add the flutter_local_notifications package to your pubspec.yaml file. Open the file and add the following dependency: Then, run flutter … Read more

How to execute code after delay in flutter

In Flutter, you can execute code after a delay using the Future.delayed method or the Timer class. Here are examples of both approaches: Using Future.delayed: In this example, the code inside the function will be executed after a 2-second delay. You can adjust the duration according to your needs. Using Timer class: In this example, … Read more

Flutter Advanced Interview Questions and Answers

Flutter is a popular cross-platform mobile development framework that allows developers to build native-looking applications for iOS and Android using a single codebase. It is developed by Google and is based on the Dart programming language. Flutter is a relatively new framework, but it has quickly gained popularity due to its many advantages, such as … Read more

Flutter Interview Questions for Freshers

Flutter is a popular cross-platform mobile development framework that allows developers to build native-looking applications for iOS and Android using a single codebase. It is a relatively new framework, but it has quickly gained popularity due to its many advantages, such as its fast development speed, expressive UI, and large community of developers. If you … Read more