Probably one of the most important features in Flutter is stateful hot reload. Flutter has the ability to inject new code into your app while it's running, without losing your position in the app. The time it takes to update code and see the results in an app programmed in a platform language could take several minutes. In Flutter, this edit/update cycle is down to seconds. This feature alone gives Flutter developers a competitive edge.
The best way to use Hot Reload and its cousin, Hot Restart, is through your IDE. You can configure your Flutter plugin to execute a hot reload every time you save your code, causing the whole feature to become almost invisible.
In Android Studio/Intellij IDEA, open the Preferences window and type hot into the search field. This should quickly jump you to the correct setting:
Verify that the Perform hot reload on save setting is checked. While you are there, double...