Android EP1: Understanding Android Activity - Interview Questions included
Mastering the Android Activity Lifecycle - A Comprehensive Guide for App Developers
In this post, I’ll cover 3 topics related to Android Activity
Activity Lifecycle
Activity Launch Mode
Interview Questions for Android Activity (2023 Updated)
Activity Lifecycle
Understanding the Activity Lifecycle is essential for creating and maintaining robust, reliable Android apps. I’ll take you on a deep dive into Android Activity Lifecycle and explore the difference between states.
When an Activity is launched, it goes through a series of states, or lifecycle callbacks that are triggered by Android OS. These callbacks allow the Activity to perform tasks like initializing resources, updating UI, or saving and restoring data.
Every Android Activity Lifecycle consists of the following states:
Activity Launch Mode
Activity Interview Question 2023
What is the difference between onStart vs onResume; onPause vs onStop?
In summary, onStart is the callback when the Activity is about to be brought to the foreground but it’s not visible yet and not ready for user interaction; onResume will be called when the Activity is fully in the foreground and ready for User Interaction.
onPause is called when the Activity is partially covered by others and may returns to the foreground (for example: When we request some system permissions, the Activity just paused, not stopped); onStop is called when the Activity is no longer visible and may be destroyed by the OS.
Happy coding!