Tsuyoshi Chujo
chooyan.bsky.social
Tsuyoshi Chujo
@chooyan.bsky.social
Freelance FlutterDev in Japan. Always open to joining Flutter projects.

Developer of a Flutter package named crop_your_image
https://pub.dev/packages/crop_your_image

Publishing articles mainly about Flutter under the hood
https://chooyan.hashnode.dev/
My talk is now introduced on #ftcon25eu website! My topic is, of course, my animated_to package! And also I'll cover how RenderObject works under our widgets. #FlutterDev www.fluttercon.dev/speakers/tsu...
Tsuyoshi Chujo | fluttercon EU
www.fluttercon.dev
July 23, 2025 at 12:14 AM
I haven't posted anything to Bluesky for a while, but now let me ask who has tried my package animated_to. It's so simple that the widget named AnimatedTo lets any widgets animate when they update their position; simple but so powerful, isn't it? pub.dev/packages/ani... #FlutterDev
July 14, 2025 at 3:45 PM
I've published another article about the "explicit" animations of Flutter! Open the link below if you are interested in physics-based animation as well as the basics of AnimationController without using any packages! chooyan.hashnode.dev/all-i-know-a... #FlutterDev
chooyan.hashnode.dev
March 23, 2025 at 2:12 PM
My animated_to package now introduces “spring simulation” version of AnimatedTo widget, AnimatedTo.spring()! This enables physics-based animation when child updates its position, which means so smooth and natural! Try this by importing the latest version of 0.3.1! pub.dev/packages/ani... #FlutterDev
March 20, 2025 at 10:20 AM
I've published my resume page using Flutter web on GitHub Pages! Flutter web enables me to embed the demo section for my #FlutterDev packages. Visit there and try them. Also, feel free to contact me if I have chance to join any projects as a freelancer. chooyan-eng.github.io/chooyan_resu...
January 15, 2025 at 11:20 AM
During the New Year holidays, I've published multiple articles to my "All I Know about Something" series on @hashnode.bsky.social. The knowledge about BuildContext, GlobalKey, and Layout calculation will make your #FlutterDev more enjoyable in 2025! chooyan.hashnode.dev/series/all-i...
All I Know about Something - Chooyan's Flutter
This series shows my understanding of a certain topic. The articles describe the topic as much as topics in a random order.
chooyan.hashnode.dev
January 5, 2025 at 9:46 AM
Reposted by Tsuyoshi Chujo
Figured out how to make starter packs!~ anyone in #FlutterDev ? 💙🦋😊✨

go.bsky.app/EzEZLU7
(I’ll add more people as we go forward, just ping me!)
October 21, 2024 at 11:57 PM
Do you like moving animations? My new package will let you enjoy with a couple of lines of code and in a few minutes coding. #FlutterDev pub.dev/packages/ani...
December 18, 2024 at 10:49 AM
crop_your_image allows you to provide cropping UI with both light and dark theme, it’s totally up to you. And version 2.0.0 stable, with a lot of new features and big fixes, is about to be published! stay tuned! #FlutterDev

pub.dev/packages/cro...
December 10, 2024 at 8:44 AM
crop_your_image now introduces undo/redo feature! try cropController.undo() with the version of 2.0.0-dev.2 pub.dev/packages/cro... #FlutterDev
December 8, 2024 at 4:18 PM
just published a new version of crop_your_image of 2.0.0-dev.1, including refactoring core classes. I'll update this to 2.0.0 stable after checking issues and pull requests. #FlutterDev pub.dev/packages/cro...
crop_your_image 2.0.0-dev.1 | Flutter package
crop_your_image helps your app to embed Widgets for cropping images.
pub.dev
December 7, 2024 at 3:52 AM
bothered from complex local state management logics? this repository may help introduce you an idea. #FlutterDev

github.com/chooyan-eng/...
github.com
December 4, 2024 at 2:07 PM
Japanese typewriter with 2,400 keys is crazy.

en.wikipedia.org/wiki/Japanes...
December 3, 2024 at 6:57 AM
Reposted by Tsuyoshi Chujo
The dates are set for Flutter & Friends 2025! 🥳
So mark 31st of August to 2nd of September in your calendars. (Tickets are not released yet)
December 2, 2024 at 10:28 AM
Hi, folks. Who are interested in this mysterious Japanese typing mechanism on #FlutterDev?
December 2, 2024 at 12:36 PM
I’v published an article about MVVM on #FlutterDev apps. I’m discussing how MVVM looks like on Flutter and how much it “fits” to Flutter in reality considering its fundamental mechanism. chooyan.hashnode.dev/discussion-m...
MVVM pattern for Flutter apps
MVVM is one of the most popular architecture patterns for mobile app development. In this article, I'll discuss how MVVM can be applied to Flutter apps, and
chooyan.hashnode.dev
November 11, 2024 at 12:29 PM
Reposted by Tsuyoshi Chujo
Here is the official FlutterCommunity on BlueSky

bsky.app/profile/flut...
November 2, 2024 at 7:20 PM
I've just published version 1.0.0 and crop_your_image is now stable!

Well tested, web/desktop support, backend logic interchangeable, and some breaking changes are there.

Enjoy fully customizable Crop widget!

#flutterdev
pub.dev/packages/cro...
crop_your_image | Flutter package
crop_your_image helps your app to embed Widgets for cropping images.
pub.dev
February 11, 2024 at 3:17 AM
just restarted maintaining crop_your_image from restructuring the entire code to achieve more testable and customizable. #flutterdev
February 8, 2024 at 5:10 AM
seems my actions (post, follow, like, etc) aren't accepted to bluesky's database immediately.
February 7, 2024 at 7:15 AM
Who are posting Flutter dev topics in Bluesky?
February 7, 2024 at 7:08 AM