Search Results for: flutter

How Flutter handles images and asset density and scaling differently than Android’s legacy drawable-*dpi folders? Let’s break it down clearly 👇 🧩 1. How Flutter handles multiple resolutions Flutter doesn’t use the drawable-mdpi, drawable-hdpi, etc. system directly.Instead, it uses device pixel ratios (DPR) and asset variants. You can define image variants like this: And in…

You can have a horizontal scroll view (like a ListView or SingleChildScrollView with scrollDirection: Axis.horizontal) inside a vertical one — you just need to make sure Flutter knows how to size things properly so it doesn’t complain about unbounded height or conflicting scroll gestures.   ✅ Example: Horizontal Scroll Inside Vertical Scroll ⚙️ Key Points…

Theming in Flutter is primarily implemented using the ThemeData class and the Theme widget, allowing you to define a consistent look and feel across your entire application. 🎨 Implementing Theming in Flutter Define ThemeData: Create one or more instances of the ThemeData class, typically for a light and a dark theme. The most important properties…

sensors_plus is a more up-to-date and widely-used package for accessing various sensors on mobile devices with flutter. To use sensors_plus, first add the package to your pubspec.yaml file: https://pub.dev/packages/sensors_plus dependencies: sensors_plus: ^0.2.6 Then, import the package in your Dart file: import ‘package:sensors_plus/sensors_plus.dart’; You can access different types of sensors using the SensorManager class: void main()…

There are two primary ways to supply an initial value to a text field in Flutter, depending on the widget you are using: Using a TextEditingController (Recommended for state management)1 Using the initialValue property (For stateless fields)2 1. Using a TextEditingController 📝 The most common and flexible way is to use a TextEditingController and set…

You can have an implementation of an icon like a profile photo with a number (a profile photo with a small circular badge overlay in the bottom-right) in Flutter by using a Stack with a Positioned widget. Here’s a complete example 👇: ✅ Flutter Implementation Example import ‘package:flutter/material.dart’; class ProfileWithAlertIcon extends StatelessWidget { @override Widget…

What is this new 16k Android Requirement. How does it affect me (Flutter App Developer) – this is one of the stoppers for Publishing Apps on Google Play? Android has historically used 4KB memory pages for managing RAM allocation (the smallest unit the OS uses to track and swap memory). However, many modern ARM64 CPUs…

To make Flutter Bloc logic testable, extract business logic into service methods or classes, isolating it from state management. This guide provides a step-by-step approach with examples. 1. Understand the Goal Why extract logic? Blocs often mix business logic (e.g., API calls, data processing) with state management, making them hard to test. Extracting logic into…

There are several methods you can create screenshots of a Flutter app, depending on whether you want manual screenshots, automated screenshots, or marketing-ready assets. Here’s a breakdown: 📱 1. Manual Screenshots Device Emulator/Simulator Run your app in Android Emulator or iOS Simulator, then use their built-in screenshot tools. Android Studio → Device Manager → Take…