Flutter didChangeAppLifecycleState

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.

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. …

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.