2016 - Kotlin can be used unofficiall7 2017 - Kotlin support added offcially 2018 - Kotlin use encouraged by Google

We must know Java, but apps must be made in Kotlin only. All new code is written in Kotlin Zomato - codebase is 85% Java Target - 85% Kotlin

Java is required, but Kotlin is used.
New apps are written in Kotlin

OOP - Interface, function overriden, callbacks, Lambdas, Generics, Java Collection

Android things

Components - Activities(foreground), Services(background), Broadcast Recievers(OS events), Content Providers(Rarely used in SDE 2)

There’s no void main()

Android is UI driven, not procedure one

Chapter 1 - 2 weeks #

Activities - What is it, how is done?
Layouts - UI elements
View Elements - text view, buttons, Edit text, image view

Intents - Implicit, explicit - share and select apps. App to app communication

Chapter 2 - 4 weeks #

Complex UI - List view(infinite scrolls), recycler view, Dialogs, Toast(like subs), sheets,
    Drawyers, View Pagershorizontal buttons to change sections
Everything here is implemented using fragments(lightweight activities)

Chapter 3 - 2 weeks + 3w(project, mandatory) #

Network Facilities, HTTP dict, Square OK HTTP(img, http request/response), Square Retrofit(REST API), Apollo Android(GraphQL), Glide(image)
Gradle - how to add libraries

We are ready to make apps, realworld.io - clone of Medium, using imgur API and make insta stories clone, daily notes/diary

Chapter 4 - 2 weeks #

Media - play audio, play in background(using services), Video using Exoplayer, Camera(take photo, record videos - this is difficult)

Chapter 5 - 2 weeks #

Very important
Android Jetpack - toolkit to write Android apps, MVVM(architecture for building models), Work manager, Job-scheduler
Saving data - SQLite using Room(which is an ORM - start with this after learning SQL), CameraX

Deploy/Production - 3 #

Firebase - User Auth, Notifications, Data Sync, Cloud

We can make an end to end app.

Advanced Stuff - useful for >= SDE2 #

Kotlin has something - corountines (1 weeks) Rx Java - (2 weeks) Dependency Injection - Koin(2 weeks) and Dagger(2 weeks) Jetpack Compose - for UI (4 weeks)

After SDE2 - for futureproofing #

Flutter(not ignorable and not the future)
Native iOS(mental models can be used)

Code With Harry

Native is better than frameworks, for beginners
XML is just the design, and Java is the logic. In Web Dev terms - XML = HTML+CSS and Java = JS
Android in one video - Android Studio - Learn the playground - https://www.youtube.com/playlist?list=PLu0W_9lII9ahKZ42vg2w9ERPmShYbYAB7
Android Developer Fundamentals, Advanced Android Development - By Googlehttps://developer.android.com/courses
Udacity - Developing Android apps https://www.udacity.com/course/new-android-fundamentals--ud851
Documentation - Become good enough to use Google etc(never ending)
Android Launcher Iconhttps://romannurik.github.io/AndroidAssetStudio/icons-launcher.html#foreground.type=clipart&foreground.clipart=android&foreground.space.trim=1&foreground.space.pad=0.25&foreColor=rgba(96%2C%20125%2C%20139%2C%200)&backColor=rgb(68%2C%20138%2C%20255)&crop=0&backgroundShape=square&effects=none&name=ic_launcher
Lean Build Earn Repeat

How to earn #

Freelancing - Difficult
PlayStore and AdMob - 25$
Play Store + inApp purchase
Job/Internship
Social media? Tutoring, Bug fixing - Side income
Never Ending
Visit blog
Git, CI/CD
Database - SQLite, Firebase
AdMob API
How to make PUBG, GTA5 - Unity game Engine
DS/Algo

https://www.youtube.com/redirect?redir_token=QUFFLUhqbnUzcC0wci1BWlRJaHBhSWNBazFodWwtTEN6Z3xBQ3Jtc0trVUZ6d3dYdEdHeHNseWliTnh2eDA5d3NzdXU4T1cxTXZDN09SNE5KbXR6UXF3YmpBUWtYOXBOTllmX01VNXNEWUR2QVBLUlBJMUViVGVPWThqelhkSWRhY3p1QzNXamtzN2dBcVVmR2d6OGRoWTgycw%3D%3D&v=A14BLDzNy2k&q=https%3A%2F%2Fdocs.google.com%2Fdocument%2Fd%2F1nl7jAWYmt0zvYmbImp8pT-VLMNdHedoMdvg7qvQ1EV8%2Fedit%3Fusp%3Dsharing&event=video_description

Love Babbar - in 2 months Starting point - just programming