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Android Studio Setup in English - (BCA / B.Tech)

What is Android Studio Setup in English

Before starting Android App Development, it is important to set up Android Studio, run the Emulator, connect a physical device, and understand the Project Structure well.
These build a strong foundation for you.
Once you understand these basics, designing the UI and implementing logic becomes very smooth.

1. Android Studio Setup (Install and Start)

Android Studio is Google's officially recommended IDE (Integrated Development Environment), which is the most essential and basic tool for creating Android apps.

Installation Steps:

Step 1: Download Android Studio

Go to the website: https://developer.android.com/studio
Click on the download button according to your operating system (Windows, macOS, Linux).

Step 2: Run the Setup Wizard

Open the .exe or .dmg file and follow the installation wizard.
Let the SDK, Emulator, and Tools install with the default settings.

Step 3: Verify the Android SDK

Android Studio > Settings > Appearance & Behavior > System Settings > Android SDK
Here you will see the SDK Location and below that, the Android versions (API level).

Virtual Device Setup | Running the Emulator:

An Emulator is a virtual Android phone that runs on your computer.
With this, we can run and test the app even without a mobile device.

Steps to create an Emulator:

Step 1: Open AVD Manager

In Android Studio, click on the “AVD Manager” icon on the top Toolbar
(or Tools > Device Manager > Create Virtual Device)

Step 2: Choose a Device

Choose any device model (e.g., Pixel 4, Nexus 5X, etc.)

Step 3: Download a System Image

Download the system image of any Android version (e.g., Pie, Q, R, etc.)

Step 4: Run the Emulator

After creation, press the “Play” button
The Emulator will launch and you will see the Home Screen

Add Physical Device | Running your phone via USB:

If the Emulator runs slowly or you want to test on a real device, you can connect your Android phone directly to Android Studio.

Steps to set up the Mobile:

Step 1: Turn on Developer Options

Go to your phone:
Settings > About Phone > Build Number
Tap on it 7 times – you will see “You are now a developer!”

Step 2: Turn on USB Debugging

Now go to: Settings > System > Developer Options > Turn on USB Debugging

Step 3: Connect the Phone to the computer with a USB cable

As soon as you connect the phone, a popup will appear – “Allow USB Debugging” → Allow it
Now your device will start appearing in the run options in Android Studio

Understanding the Android Project Structure:

When you create a new Project in Android Studio, some folders/files are generated automatically. It is very important to understand them.

Android Project Structure:

MyFirstApp/

├── manifests/

│ └── AndroidManifest.xml

├── java/

│ └── com.example.myfirstapp/

│ └── MainActivity.java

├── res/

│ ├── layout/

│ │ └── activity_main.xml

│ ├── drawable/

│ ├── mipmap/

│ ├── values/

│ │ ├── strings.xml

│ │ └── colors.xml

├── build.gradle

Important Files & Folders:

1. AndroidManifest.xml

It is the blueprint of the app
Components are declared here (Activity, Permissions, etc.)

2. java/

All your app's Java or Kotlin logic is here
MainActivity.java defines the first screen of your app

3. res/ (Resources)

UI files, images, icons, colors, strings are all here

Subfolders:

layout/ → XML UI files (like activity_main.xml)
drawable/ → Images/icons
mipmap/ → For the App icon
values/ → To keep Strings, Colors, Styles

4. build.gradle

Dependencies and SDK versions are defined here

There are two files:

Project level build.gradle
App level build.gradle

Android Studio Setup in English

What is Android Studio Setup in English

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