Flutter: how to perform action after the build of a widget is completed?
In Flutter, sometimes you want to perform an action after the build process of a widget is completed. For example, you may need to update the view or start an animation once the widget is displayed on the screen. To achieve this, Flutter provides the addPostFrameCallback method, which allows you to execute a callback after the last frame of a widget’s build process is drawn. addPostFrameCallback is a method of the SchedulerBinding class, which is the central class that schedules tasks and controls the behavior of the framework....