iOS


How to force a widget to redraw in Flutter

In a typical application you will be creating Widgets that internally are made up of other widgets (Widget Composition). In this scenario, it is often useful to pass objects from parent widget A to child widget B and ensure that Widget B is rebuilt at the proper time.

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Swapping two widgets in Flutter, inverting their positions with or without animation

In this article you will learn how to swap two widgets in Flutter to achieve an effect like swapping the addresses on Google Maps, you can use the Stack and Positioned widgets, optionally adding an animation effect.

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Rotate and flip an image in Flutter with or without animations

This article will show you how to flip an image in Flutter on it's horizontal or vertical axis. I will also show you how to achieve this effect gradually via animations and how to change the image when flipping it (like showing the back of a card).

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Custom events in a Flutter widget: how to pass function parameters in Dart

When creating Widgets we often need to allow the execution of custom code when our widget changes state, for example when a user taps on the Widget. In order to allow this behaviour we can define custom events on our widget so that developers can run their own code when these events are triggered.

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Preload images in a stateful widget on Flutter

When we need to use images in Flutter we can load them into an Image widget. If you're rotating through a list of images and we want to obtain a a smooth, real-time transition between images, we need to preload them so that they will be readily available when you need them.

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