STARTING ANDROID DEVELOPMENT

To get Started with Android You will need to learn the following through some online trainings

● Dagger
○ What is dependency management
○ Design classes with dependencies
○ Design based on inversion of control
○ Design based on injection
○ Designing own dependency management framework
○ Singleton & Introduction to Dagger
○ History of Dagger 2
○ Create your own custom Annotation
○ Understanding Dagger Framework
○ Project introduction, @Module, @Inject, and @Provides
○ Create and use a Component
○ Singleton and Scope
○ Use Dagger in an Activity
○ Share instances between components
○ Scope and Component Methods
○ Constructor Injection
○ Qualifier and Named
● Learn Kotlin
○ Intro to Kotlin and Type Hierarchy
○ Setting it up with project
○ Classes
○ Variables
○ Functions
○ Null Safety
○ Construtor
○ Data class
○ Object Declaration and Expression
○ Control Flow Expression
○ Collections
○ Lambda Function
○ Extension Function and Let Run Also Apply
● Architectural Components
○ Introduction to Lifecycle
○ Challenges of lifecycle handling
○ Activity rotation problem
○ Lifecycle States and Events
○ Create a Lifecycle Aware Component
○ Create a TimerToast in an Activity
○ Make the TimerToast lifecycle aware
○ What is a ViewModel?
○ How ViewModel solves screen rotation problems
○ What is a LiveData?
○ Types of LiveData
○ Sharing a ViewModel
○ Using ViewModel and LiveData
○ Create ViewModel and LiveData based TimerToast
○ Use ViewModel and LiveData in an Activity
● RxJava
○ How does threading work in Android?
○ What is RxJava?
○ Components and basic examples
○ Schedulers
○ AsyncTask vs RxJava
○ Operators Examples - Map, Filter, Zip & FlatMap
○ Disposable & CompositeDisposable
○ Types of observables and Create your own observables
○ Solving Search problem with RxJava Operators - Debounce, DistinctUntilChanged, SwitchMap
○ Advantages of RxJava
● Database
○ Relational database concepts
○ Tables and Schema
○ Problems in a bad Schema design
○ Types of Relationships and Foreign Keys
○ Normalization and many-to-many relationships
○ Introduction to Room Database
○ CRUD operations in Room Database
○ Project setup and User Entity
○ Create User DAO and queries
○ Create Room Database instance
○ Using Room Database
○ Dagger setup for Room
○ Making Room queries using RxJava in ViewModel
○ Show Room data in UI using LiveData
○ Create relations in Room Database
○ Embedded
○ Relation and Foreignkey
○ DAO and queries across tables
○ Test queries using UI
○ Advanced Concepts
○ TypeConvertors
○ Migration
● Networking
○ Concepts: HTTP, OKHttp, and Retrofit
○ Introduction to Networking
○ What is Retrofit?
○ Network Caching
○ Interceptors
○ Read and Write Timeout
○ Parse data with Gson
○ Retrofit with RxJava
○ Implementing Network APIs through code
○ Project Setup
○ Create Networking Class
○ Configure Retrofit
○ Create Request and Response Model
○ Create POST request
○ Configure Dagger for Networking
○ Make Network call in a ViewModel
○ Create GET request and complex data Model
○ Add Query parameters and Headers
○ Delete query
● MVVM and Instagram project
○ Different types of Architectures
○ An Architecture use case?
○ Feature addition problem
○ Why tests are important
○ Some suggestions for adopting an Architecture
○ Separation of concern
○ No hard dependency principle
○ What is MVC architecture?
○ What is MVP architecture?
○ What is MVVM architecture?
○ MVVM architecture blueprint
○ MVVM package overview
○ Getting started with MVVM
○ Base classes overview
○ Introduction to Generics
○ ViewModel overview
○ Build the Base classes for MVVM
○ Project setup
○ Create BaseViewModel
○ Create BaseActivity
○ Create BaseFragment
○ Create ViewModelProviderFactory
○ Use ViewModelProviderFactory
○ Attach MainActivity UI with LiveData
○ Setup Dagger for MainActivity
○ Showing Toast
○ ViewModelProviderFactory
○ How ViewModelProviders works?
○ How ViewModelProviderFactory works?
○ Lifecycle aware RecyclerView Design
○ Problems of using RecyclerView in MVVM
○ Principles of lifecycle aware RecyclerView
○ Using RecyclerView Adapter callbacks
○ Base classes needed
○ Activity lifecycle effect on RecycleView?
○ Using Lifecycle aware Adapter in Activity
○ Implementing Lifecycle aware RecyclerView
○ Create BaseItemViewModel
○ Create BaseItemViewHolder
○ Dagger setup for ViewHolder
○ Lifecycle state change for ViewHolder
○ Create BaseAdapter
○ ViewHolder’s lifecycle change with window attach/detach
○ Associating Activity/Fragment lifecycle with ViewHolder
○ Create Post list UI
○ Create Post Adapter
○ Populating RecyclerView with Post list data
○ Run the code developed
○ Login Screen of MindOrks Instagram App
○ Create Login Activity UI
○ Create LoginActivity and LoginViewModel
○ Create Login fields validations
○ Use Login Validator in LoginViewModel
○ Integrate Login APIs using Retrofit
○ Add Login Repository
○ Handle Login UI changes in ViewModel
○ Add login UX logic
○ Associate Login UI with LiveData
○ Run the code developed
○ Main screen of MindOrks Instagram App
○ UI design overview
○ Create MainActivity and empty Fragments
○ Add bottom navigation
○ Setup Dagger classes
○ Add fragment toggle
○ Home screen of MindOrks Instagram App
○ UI design overview
○ API doc overview
○ Integrate API using Retrofit
○ Add PostRepository
○ Create Post List UI
○ Create PostItemViewModel and PostAdapter
○ Building up the HomeViewModel
○ Implement Pagination feature using RxJava
○ Add load more feature using RecyclerView
○ Add LiveData for UI in PostItemViewModel
○ Associating LiveData with PostItemViewHolder
○ Post create screen of MindOrks Instagram App
○ UI design overview
○ Build the Photo fragment UI
○ Capture image through Camera
○ Pick image through Gallery
○ Image handling inside PhotoViewModel
○ Multipart image upload
○ Post creation
○ PhotoFragment, HomeFragment and MainActivity communication
○ Update Post List with new Post
● Unit Testing
○ What is testing and its advantages
○ Types of Unit Test and packaging
○ Implementation
○ Writing Unit Test
○ Libraries used In Unit Test
○ Writing unit test for ViewModel
○ Writing UI Test
Interview Kit and Guide
● Android Build System and Memory Management
○ Android Build system
○ Introduction
○ JIT and JVM
○ Android Dex File
○ DVM, ART, and AOT
○ Android Memory Management
○ How objects and primitives are stored.
○ Heap memory storage
○ Large Heap
○ Multiple App Ram management
○ Stack and Thread
○ Stack and Heap in multithreaded condition
○ Memory Leaks
● Android Multithreading and Handler-Looper
○ Multithreading
○ Main Thread and Event Loop
○ Multithreaded System
○ Monitor and Synchronization
○ ReentrantReadWriteLock
○ Executor Service
○ Atomic Boolean and CountDownLatch
○ Deadlock
○ Android Handler and Looper
○ The need for Handler and Looper
○ Implement SimpleWorker using Thread
○ How Handler and Looper works?
○ What is a message queue?
○ What is HandlerThread?
○ Create a worker using Handler
● Networking Caching Interceptor Image Loading
○ What problems Image Loading Library Glide solves?
○ How Glide solves OOM?
○ How Glide solves slow loading issues?
○ How Glide solves UI unresponsiveness?
● System Design(Mobile): WhatsApp and Location Sharing App
○ HTTP vs WebSocket
○ How does the notification system work?
○ WhatsApp Design
○ Location Sharing Design
○ How Video calling works?