When to use setState() ? When we want to change the UI of the screen . We don’t need to call setState every time we change a variable. We call setState only when we want the change in a variable to reflect on the UI of the screen.
Read moreDoes Flutter have lifecycle?
Flutter is a mobile framework that helps to modernize both iOS and Android app from a single codebase. We will also implement a Widget Lifecycle demo, describe its properties, and use them in your flutter applications. …
Read moreWhat is Flutter app lifecycle?
The observable lifecycle events are: inactive — The application is in an inactive state and is not receiving user input. … paused — The application is not currently visible to the user, not responding to user input, and running in the background. This is equivalent to onPause() in Android.
Read moreWhat’s the role of runApp () in Flutter?
The runApp() function takes the given Widget and makes it the root of the widget tree . In this example, the widget tree consists of two widgets, the Center widget and its child, the Text widget.
Read moreWhat is main Flutter?
In order to write any Dart program, be it a script or a Flutter app, you must define a function called main . void main() { print(‘Hello, Dart’); } This function tells Dart where the program starts, and it must be in the file that is considered the “entry point” for you program .
Read moreWhat is MyApp in Flutter?
In the “Hello Flutter” code above, MyApp is a widget created by us which will build the screen layout . Every custom widget has a build function which returns a Widget.
Read more