In the last video you saw the Android Manifest File.
Let’s look at the MainActivity class. The MainActivity class is called when you Launch the App.
This Class is an Activity. Now you might be wondering what is an Activity. An Activity is used to peform certain basic setup tasks when the App Launches. Like specify the Layout
which the App will use. All activities should extend Activity class and implement the onCreate method which gets called when the activity object gets created.
I hope this gives you an idea about the MainActivity Class. We will look at the activity life cycle a little later. In the next video you will see the Layout file. Until next time, bye.
Why Android 