Android Activity Lifecycle Explained | From onCreate to onDestroy (Kotlin Demo)
What if I told you there's a hidden powerhouse within every Android app, waiting to be unleashed for peak performance? It's not a new library or a complex framework, but something fundamental: lifecycle callbacks. Discover how a deep dive into these essential Android components can revolutionize the way you build and optimize your applications, making them faster and more reliable than ever before.
We’ll create a new activity, design the layout, connect it with Kotlin code, update the TextView, and use Logcat to see lifecycle methods in action.
Perfect for beginners who want to understand how Android handles activity states like onCreate, onStart, onResume, onPause, onStop, onRestart, and onDestroy.
📌 What you’ll learn in this video:
✔️ Create a new Activity (MainActivity3) and set it as Launcher Activity
✔️ Update TextView dynamically in each lifecycle method
✔️ Use Logcat to track lifecycle state changes
✔️ Understand how Android apps behave when minimized, reopened, or closed
0:00 – Android Component?
0:58 – Activity & it's Lifecycle
1:23 – Creating MainActivity3
1:45 – Designing Layout in ConstraintLayout
2:40 – Writing Kotlin Code (onCreate)
4:08 – Adding onStart, onResume, onPause, onStop, onRestart, onDestroy
5:49 – Editing AndroidManifest.xml to set Launcher Activity
7:03 – Running the App and Logcat Output Explained
8:00 – Recap + Final Thoughts
📌 Kotlin Basics Tutorial → • Stop Guessing Kotlin: Master the Essential...
📂 This is part of my *Android Studio Beginner Playlist* → • Complete Android App Development with Kotl...
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