Introduction to Android App Development

Introduction to Android App Development

In this tutorial, we will introduce you to the basics of Android App Development using Java in Android Studio. By the end of this tutorial, you'll have built a simple app that displays a message on the screen.

Step 1: Set Up Android Studio

• Download and install Android Studio from the official website: Android Studio.
• Launch Android Studio and select **Start a new Android Studio project**.

Step 2: Create a New Project

• Enter the project name (e.g., "MyFirstApp") and choose the programming language (Java).
• Select the type of project (for this tutorial, use **Empty Activity**).

Step 3: Add a TextView to Display the Message

Open the **activity_main.xml** file and add the following code to display a message:

Step 4: Modify the MainActivity.java

In the **MainActivity.java** file, add the following code to set the text dynamically:

package com.example.myfirstapp;

import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView textView = findViewById(R.id.textView);
        textView.setText("Welcome to Android Development!");
    }
}

Step 5: Run the App

Click on the **Run** button in Android Studio to run the app. You should see the message "Welcome to Android Development!" on the screen.

Conclusion

Congratulations! You have successfully built your first Android app. This is just the beginning, and there are many more things to explore in Android development.