Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.
set the environment variable JAVA_HOME as C:\Program Files\Java\<jdkversion>

PS: Generated apks are stored in in \app\build\outputs\apk\debug\app-debug.apk

Create New Project

Choose Empty Project

Options

Name:
Package:
Save Location : File location in your computer
Langiage: Java
Minimum SDK API: 24(Android 7)

Hit Finish

Project Structure

Official Documentation

The Android project structure on disk differs from this flattened representation. To see the actual file structure of the project, select Project instead of Android from the Project menu.

File Structure of Android Project

.git
.gradle
.idea
build.gradle(Project): Top-level build file where you can add configuration options common to all sub-projects/modules.
/app/
----------------build.gradle(app)
----------------build
----------------src/main
----------------AndroidManifext.xml
----------------assets(custom)
----------------java
----------------res
\build
\gradle
\gradle\wrapper

Project Layout as in Project explorer

app
manifests
--------AndroidManifext.xml
java
|
--------com
----------------example
------------------------project name (code will be inside here)
assets(custom)
res (resources)
--------drawable
--------layout(layouts here)
--------menu
--------mipmap
--------values
--------xml
Gradle Scripts

Problems panel

The Problems panel in Android Studio is a centralized and shared issue panel for all design tools, such as Compose Preview, Layout Editor, and Layout Validation. To view the tool window, navigate to View > Tool Windows > Problems.

Sample Code

https://developer.android.com/studio/write/sample-code#menus

Preview Layouts

Choose layout to preview from Project explorer
double click.
there are 3 options for viewing layout
1. code
2. split
3. design(default)

Run app in mobile

Reference

Use Tools >> Device Manager.
Choose Physical

In order to run app in mobile, you should

Enable developer options in mobile.
To do that go to settings, click build no 7 times. Developer options menu item will appear
in redmi note 5, its under Settings >> Additional Settings >> Developer options. For other phones find it via google
Pair the phone with Android Studio by pluging the USB code with the phone
PS : for Android 11+, it can also be paired via Wifi or OTP
Once connected and PC acknowledges it(some cable doesnt work), go to Developer options , Enable USB Debugging (in some phones/ emulators like bluestacks it is Android Debugging & ADB(Android Debugging Bridge) over network).
Ensure device appear in the list(Physical)

PS: For Windows OS ,you might need to install a USB driver for ADB (if applicable). For an installation guide and links to OEM drivers, see Install OEM USB drivers.

Run app in Virtual Device

Reference

Choose Virtual in device manage window

Requirements

16 GB RAM
64-bit Windows, macOS, Linux, or Chrome OS operating system
16 GB disk space

Create a new device

Choose phone type and hit Next
Choose Android version, download System Image clicking down arrow, and hit Next
Set AVD Name, hit Finish
Choose the virtual device created
Ensure device appear in the list(Virtual)

Using Bluestacks Emulator

download

instructions 3.30 on wards

You could detect in chrome with chrome://inspect/devices#devices

And can use Web view for debugging

Development Workflow

Refernce

Getting a hang of Android Studio

Installation

Requirements

Download

Install

Configure Android Studio

Install Java

Set JAVA_HOME Environment Variable