Introduction It may seem trivial, but it’s very important. Especially for UI. This is a story about how the image display using the FittedBox widget changes when the image size changes. Consider that you have an admin app and a user app, and you want to upload an image from the…

Introduction Implement transaction processing with AWS amplify, which provides the same functionality as firebase. Implementing transactions with amplify is quite a bewildering experience for app developers who have been using firebase. In firebase, transaction processing can be easily implemented using the Firestore Sdk, but amplify requires a wide range of knowledge…

Introduction FlutterFlow is a web service that allows us to build the UI of a flutter app using components that are visual representations of widgets. It looks similar to design tools such as xd and figma, but in reality, it is a visualization of coding. All the parts provided are the…

I summarized what I think about the flutter based on my experience developing seven apps with flutter and the flutter developer’s opinions that I fount in the internet. Feature Cross plat form It is possible to build on but Android and iOS only web ,Linux ,macOS and Windows. Building ui with widgets The declarative UI of the flutter…

Since stripe_payment, stripe’s package for flutter, is now deprecated, I decided to use flutter_stripe, stripe’s official package for flutter. I implemented it with a backend in my work, but in this article, I’m going to write about how to register payment and subscription without a backend, just implementing the app…

I have implemented sound null safety in the application using the freezed that is flutter package. I will share implementation guidelines at that time. Introduction I think the main purpose of null safety support is to prevent unexpected crashes caused by null. If you try to support null safety, you may…

Table Of Contents:: Proposition My idea of a good implementation Behavior check Conclusion Appendix Proposition There was one thing I didn’t like about developing with flutter.When I see the source which I wrote and others wrote,I think so.The following things I think so. Multiple listings of the same collection (or document)…

An animation of an arc connecting two points on a google map with flutter. This is an image of an airplane flight path. First, the completed image. Tokyo Tower and Sky Tree are connected by a circular arc. The following two points are important. Get the coordinates of the screen…

This is the second installment of my comparison of the declarative UI implementations of Flutter and SwiftUi. This time, I used a certain sports-only video streaming application as the subject. There are no difficult parts at all, so I think even a beginner can easily implement it. final version Flutter on the…