What is Activities in Android SDK?

In Android SDK, an Activity represents a single screen with a user interface. It's one of the primary building blocks of an Android application. The Activity serves as the entry point for interacting with the user and is responsible for managing the lifecycle of the user interface. Each Activity is a subclass of the Activity class and is defined in the application’s manifest file.

When an Activity starts, it can display a layout, capture user input, and perform various actions based on user interactions. Activities can also communicate with each other using Intents, enabling navigation between different screens of the application.

Activities are crucial for building a responsive and engaging user experience in Android applications.

Here is a simple example of how to define an Activity in an Android application:

public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Links to the XML layout } }

Activities Android SDK User Interface Activity Lifecycle Android Application

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