Flutter

This article is about the BottomAppBar widget in Flutter. We’ll cover the fundamentals and walk through a couple of examples (from basics to advanced) of implementing and customizing the widget in practice (note that we’ll use…

In Flutter, you can render an image from an Int8List of bytes by using the Image.memory constructor like so: If what you have are byte buffers, use this: Example This example does the following things: Reading…

This article shows you how to add a border to an image in Flutter. What is the point? To display an image in Flutter, we use the Image widget. However, it doesn’t ship a direct option…

Imagine your boss gives you a Dart map like so: And then, he asks you to sort the map in the ascending/descending order of the map’s values. How do you solve this problem to make him…

The two examples below show you how to reverse and shuffle a given list in Dart. Reversing a Dart list Reversing a list means changing the order of the elements in the list so that the…

This short example-based article shows you a few ways to find the sum of all values in a given map in Dart (presume that all the values are numbers). Using a For/In loop Example: Output: Using…

This practical article shows you a couple of different ways to add a drop shadow to a widget in Flutter. The first four approaches are to use self-written code while the last one is to make…

The three examples below show you three different ways to reverse a given string in Dart (e.g. turn ABC to CBA). Turn the String into an Array Example: Output: Using StringBuffer Example: Output: Using Char Code…

To create a new Flutter project in the current directory, you can run the flutter create command and use the dot (.) for the path: Important: The folder name should be all lowercase, with underscores to…

In Flutter and Dart, you can subtract two dates by using the DateTime.difference method. The result is a duration. Example: Output: If you want to get rid of the blue line under the print() function, you…

In Flutter, the CircularProgressIndicator widget, as its name implies, helps you implement a circle progress indicator that lets the user know that something is loading. This widget doesn’t ship options to set its size like width,…

When working with Dart and Flutter, there might be cases where you want to turn a Duration into a string of HH:mm:ss format: Though Dart doesn’t provide an out-of-the-box API that can help us get the…