Flutter Hot Reload Feature

Hot reload

In Flutter, the "hot reload" feature allows developers to make changes to the code of a running app and see the results immediately without having to stop and restart the app. This greatly speeds up the development process by allowing developers to test and iterate on their code quickly. Hot reload works by injecting new code into the running Dart Virtual Machine (VM) and updating the app's state to reflect the changes.

It's triggered by the flutter run command or the hot reload button in the IDE (like in Android Studio, for example) .

Keep in mind that not all types of code changes can be applied using hot reload, such as changes to the app's dependencies or changes that add or remove files. In those cases, a full restart of the app will be necessary.

More on hot reload: