Summary Simple Android App Development Notes: Step-by-Step for New Coders

SIMPLE GUIDE TO DEVELOP ANDROID MOBILE APP
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1. Introduction

This is a very simple guide. It shows you how to make an Android app using Java and upload it to the
Google Play Store.

2. What You Need

- A computer

- Android Studio

- Java (JDK)

- A Google account

3. Install Android Studio

1. Go to developer.android.com.

2. Download Android Studio.

3. Install it using default settings.

4. Create a New Project

1. Open Android Studio.

2. Select 'New Project'.

3. Choose 'Empty Activity'.

4. Name your app.

5. Choose Java.

6. Click Finish.

5. Build the App Screen (UI)

1. Open activity_main.xml.

2. Drag and drop items like Text View or Button.

3. Edit the text and position.

6. Add Java Code

1. Open MainActivity.java.

2. Write code to make your button do something.

,Example:

Button b = findViewById(R.id.button);

b.setOnClickListener(v -> {

// Your action here

});

7. Test Your App

1. Connect your Android phone.

2. Turn on USB Debugging.

3. Click Run in Android Studio.

8. Create Release File

1. Go to Build.

2. Choose Build Bundle(s) or APK(s).

3. Wait for the output file.

9. Upload to Google Play

1. Go to Google Play Console.

2. Pay $25 one-time fee.

3. Create a new app.

4. Upload your AAB file.

5. Add screenshots and description.

6. Submit for review.

10. Done

Wait 1–3 days. Your app will go live after Google reviews it.



STEPS TO FOLLOW
0. Quick overview


1. Install Android Studio.

, 2. Create a new project (Java).




3. Design screen (XML).




4. Add Java code (MainActivity).




5. Test on phone or emulator.




6. Make a signed release (AAB).




7. Create a Google Play Developer account.




8. Upload the AAB and submit.