Android Learning Resources

We struggle a lot learning small, basic and specific concepts. Here is my list of resources which may help you understand Android in a better way:

Java

• Is java pass by reference or value?: Link 1, Link 2
• Desugaring in Java
• Understanding Overloading and Overriding in Java
• Practice Overloading and Overriding Java
• When to use Static class and when Singleton? : Link 1, Link 2
• OnClickListener Internals: Link 1, Link 2
• Hashmap Internals
• ArrayList Internals
• LinkedList Internals, Link 2
• Reflection in Java: Link 1, Link 2
• Garbage Collection
• Why Java is platform-independent? : Link 1, Link 2
• Implements Runnable vs extends Thread: Link 1, Link 2
• Sparse Array v/s Hashmap
• Static v/s Singleton
• Lambda vs Anonymous Classes
• Dependency Injection vs Inversion
• Stack vs Heap Memory
• When to use Handler/thread?
• Handler Internals
• Java to Kotlin

Android

• D8 vs R8
• ART vs Dalvik
• Android 11 Features
• FAQ on Scoped Storage
• Launch Modes with example.
• Recent changes in the Play store
• Activity Life Cycle
• Fragment LifeCycle
• Fragment Transition
• WindowManager BadToken Exception
• MVP vs MVVM vs MVI: Link 1, Link 2
• How MVI works
• How MVI works?
• Mediator vs Mutable Live Data
• Why and when to use Mediator Live Data
• Livedata transformations and Mediator LiveData
• LiveData vs Observable Field
• Sealed Classes
• Data Classes
• setValue vs PostValue
• Exceptions vs Error
• Memory Leaks
• Solve OOM
• How to find OOM through hProf
• Understanding MultiDex
• Hardware Acceleration
• Link 2
• Understanding Webview methods
• Memory Leak in WebView
• WebView Best Practices
• WebView vs ChromeTab
• Custom Tab — What, How, When, Why
• Under FCM concepts for Foreground and Background
• Memory Management, Link 2, Link 3
• Understanding Job Scheduler
• If u need all-time location access, what should you do?
• LayoutAnimation attribute for recyclerView not working for some devices?
• RecyclerView Internals, Link 2, Link 3
• Migration to Paging 3, Link 2
• WorkManager vs JobScheduler
• Why & How DiffUtil?
• Lifecycle View in Android, Link 2
• Kotlin Flow
• The SOLID Principles for Android Developers
• Kotlin Quick tips
• Jetpack Navigation between top-level destinations using Dagger-Hilt
• OkHttp vs Retrofit
• Understanding Android New Results API
• RecyclerView Tips
• LiveData with Coroutines and Flow
• Why @JvmOverloads in Kotlin
• Understanding Elvis Operator pitfalls
• Understanding Scoped Storage
• Understanding Android AllowBackup
• Understanding JSON Web Token
• ConstraintLayout
• Should we use largeHeap attribute in Android manifest
• Coroutines vs RxJava
• Mockito vs Mockk
• Best practices to test Static Methods
• Writing Testable Code
• JUnit Annotations
• Why Mockito can’t mock static methods
• apply vs let vs run in Kotlin
• Improve recyclerView Performance
• Understand Clean Architecture
• Memory management and Leaks
• Which context to use
• Steps to Build a quality app
• DDMS vs Android Profiler
• Activity Process LifeCycle
• System vs Data Notification — FCM
• Scheduler vs Dispatcher
• ViewModelFactory
• Custom Chrome Tabs
• Progressive vs Native App
• SDK vs Non SDK interfaces
• View Life Cycle
• How Vector drawable works
• Dagger vs Koin
• Handler vs HandlerThread vs Looper
• Enum vs Sealed Classes
• Understand Vector drawable path commands
• Custom Views performance
• Know About Memory Leaks
• FindViewById vs Synthetic Binding
• How the Enums impact performance?
• Parcelable interface implementation
• Rx with Retrofit with sample.
• Understand Android DataBinding.
• How recyclerView works internally?
• Annotation Processor
• Design Pattern
• Kotlin Questionnaire
• Coroutine Exception Handling CheatSheet
• StateFlow vs SharedFlow
• Kotlin Flows
• When to use Coroutines.unconfined?
• Lateinit vs Lazy
• Activity result API
• Lifecycle aware components
• ViewModel under the hood
• SavedState Handle
• WorkManager under the hood
• Shared Preference under the hood
• Fragment vs Custom View
• RecyclerView ViewHolder
• Ktx Extensions
• merge vs include in layout
• Okhttp interceptors under the hood
• Retrofit under the hood
• Create your own livedata.
• Enum vs sealed class
• ViewModel Best Practices
• Pros/cons of Multiple processes on Android
• How room works internally?
• How leak Canary Works?
• Mockito vs Mockk
• Mock vs Stub vs spy in Unit Testing
• Mockito vs PowerMock

Sharing some good resources from where one can learn:

• Developer Guide: https://developer.android.com/guide
• Codelabs: https://codelabs.developers.google.com/
• Udacity: https://www.udacity.com
• MindOrks: https://mindorks.com
• Ray Wenderlich: https://www.raywenderlich.com/
• CodingWithMitch: https://www.youtube.com/channel/UCoNZZLhPuuRteu02rh7bzsw
• Awesome Learning Resources: https://github.com/androiddevnotes/awesome-android-learning-resources
• Best Practices: https://proandroiddev.com/android-development-best-practices-7278e9cdbbe9
• Interview Questions: https://github.com/niharika2810/android-interview-questions
• Refactoring
• Clean Code

Originally published here.

Will be adding more int the Github repo after sorting them out. Please contribute if you have more so that I can also learn. :-)

Github Link for contribution :

niharika2810/android-learning-resources

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