Flutter UI challenge: rotary passcode (animations)

Retro rotary passcode input UI challenge made with Flutter. The main focus of this part is motion design — animations.

Mangirdas Kazlauskas

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In the previous part, we implemented all the static elements of the rotary passcode UI. In this article, I will cover the motion design part of the challenge — animations, gestures, transitions and other fancy eye candies visible on the screen.

Note: I moved this blog to my personal website. For a better reading experience, up to date articles, interactive code examples and some extra content FOR FREE, check kazlauskas.dev.

Table of Contents

  • Animations overview
  • Input mode button animation
  • Passcode digits indicator animations
  • Rotary dial animation
  • Input mode change animation
  • Summary

Animations overview

In Flutter, there are two types of code-based animations — implicit and explicit ones. For implicit animations, just select and use one of the pre-defined animation widgets from the Flutter library.

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Mangirdas Kazlauskas

Google Developer Expert for Flutter & Dart | Read the blog for free on kazlauskas.dev | Let's stay in touch - https://twitter.com/mkobuolys