Android Kotlin Basic2Advanced

A series of Android Kotlin apps based on Google & Udacity trainings. In addition to extra resources to cover latest MAD features and Android associate developer certificate requirements.

This repository includes Kotlin sample application created based on latest Android guidelines available in the following references:

• Developing Android apps with Kotlin series.
  
• Advanced Android apps with Kotlin series.
  
• Associate Android developer materials.
  

You can use these applications as reference to learn more about Android latest features or to prepare for Android associate developer certificate.

Available applications

The applications tuned a little from the original course with more features to validate extra development capabilities or to work with latest Android studio and Kotlin releases in 2021 after the course:

Basics

All applications under /basic folder:

• DiceRoller: the basic of Android layouts and actions.
  
  
• Aboutme: how to use Android data binding features.
  
  
• ColorMyviews: build responsive views with constraint layout.
  
  
• AndroidTrivia: introduction to navigation graphs, navigation drawer and fragments.
  
  
• DessertPusher: handling acitivty/ fragment lifecycle and observers.
  
  
• GuessIt: a word guessing game to learn about application archeticture, viewModel and liveData.
  
  
• SleepQualityTracker: room database, recyclerview, coroutines and basic unit testing.
  
  
• GridSleepQualityTracker: room database and grid layout.
  
  
• MarsRealEstate: demo app using viewModel & liveData with retrofit, glide and moshi in Kotlin.!
  
  
• DevByteViewer: show case room database and retrofit2 with workManager using MVVM architecture.
  
  
• Theme: themes, styles, overlays, attributes, tint and more.
  
  

Advanced

All applications under /advanced folder:

• EggTimer: learn how to show and custom notifications (require to generate google-services.json from firebase).
  
  
• CustomFanControl: design and implement the functionality of custom view to control a dummy fan.
  
  
• MiniPaint: draw on custom view using a canvas and cache for better performance.
  
  
• TodoTester: Write basic tests for a todo application, and choose between instrumented/ local tests.
  
  
• firebaseLogin: Create user authentication using Firebase backend.
  
  

Extras

Projects to showcase the rest of the Android associate certificate topics, that was not fully covered in the kotlin series applications.
All applications under /extras folder:

• MotionDemo: learn how to build widget animation using the motion layout.
  
  
• MemoryEater: async task and memory leaks.
  
  
• GitHubPaging: search GitHub for repositories displayed in paging list.
  
  
• AppWithSettings: Simple settings fragment with toggle switch.
  
  

Android Certificate Topics

This section to show the topics of the Kotlin Android associate developer exam and related reference applications in this repository.

Core

Topic	Application	Filename
Toast	EggTimer	EggTimerFragment
Snackbar	SleepQualityTracker	SleepTrackerFragment
Snackbar	Theme	GdgListFragment
Create a Notification	EggTimer	NotificationUtils, EggTimerFragment (createChannel), AlarmReceiver [optional]
AndroidX	DiceRoller	-
Android KTX	reference	-
Android KTX (Navigation)	AndroidTrivia	MainActivity, navigation_main
Android KTX (Room)	GridSleepQualityTracker	-
Android KTX (WorkManager)	DevByteViewer	RefreshDataWork, DevByteApplication (setupPeriodicWorker)

User Interface

Topic	Application	Filename
ConstraintLayout	ColorMyviews	activity_main, build.gradle
RecyclerView list	SleepQualityTracker, GridSleepQualityTracker	SleepNightAdapter, SleepTrackerFragment, fragment_sleep_tracker
Navigation drawer	AndroidTrivia	MainActivity, activity_main, navdrawer_menu
Custom view components	CustomFanControl	DialView
Start activity	GridSleepQualityTracker	SleepTrackerFragment
Start activity with result	FirebaseLogin	MainFragment (firebaseLauncher)
Share Intent	AndroidTrivia	GameWonFragment (createShareIntent)
themes	Theme	-
Lifecycles	DessertPusher	MainActivity
Paging library and flow	GitHubPaging	GithubPagingSource, GithubRepository, SearchRepositoriesViewModel, ReposAdapter
Loading state footer	GitHubPaging	ReposLoadStateViewHolder, ReposLoadStateAdapter, SearchRepositoriesActivity (initAdapter)
Menu	AndroidTrivia	winner_menu, GameWonFragment

Data Management

Topic	Application	Filename	Fun
viewModelScope	TodoTester	TasksViewModel	completeTask, clearCompletedTasks
App settings with shared preferences	AppWithSettings	SettingsFragment, MainActivity (displaySwitchValue)
App settings with shared preferences	firebaseLogin	settings, SettingsFragment
Room database and liveview	SleepQualityTracker, GridSleepQualityTracker	SleepTrackerViewModel (allNights)
Repository	DevByteViewer	VideosRepository, VideoDao, Network

Debugging

Topic	Reference
Debugging	https://developer.android.com/studio/debug/
Android logs	https://developer.android.com/studio/debug/am-logcat

Testing

Topic	Application	Filename	Test Method
Junit basic	TodoTester	StatisticsUtilsTest	Local Test
Hamcrest (English written test)	TodoTester	StatisticsUtilsTest	Local Test
Junit for liveData and viewModel (AndroidX test)	TodoTester	TasksViewModelTest	Local Test
Fake viewModel repository	TodoTester	TasksViewModelTestFake	Local Test
Dependency inject test	TodoTester	DefaultTasksRepositoryTest	Local Test
coroutines test	TodoTester	build.gradle, DefaultTasksRepositoryTest	Local Test
Fragment intigration test (ServiceLocator, Espresso & Mokito)	TodoTester	build.gradle, ServiceLocator, TodoApplication, TaskDetailFragmentTest	AndroidTest
Mocks using mockito	TodoTester	TasksFragmentTest	AndroidTest
runBlockingTest	TodoTester	TasksFragmentTest	AndroidTest
Junit rule & coroutine dispatcher	TodoTester	MainCoroutineRule, TasksViewModelTestFake	Local Test
Room and Dao test	TodoTester	build.gradle, TasksDaoTest	AndroidTest
Room and local data source	TodoTester	build.gradle, TasksLocalDataSourceTest	AndroidTest
End to end espresso test (ActivityScenario used)	TodoTester	TasksActivityTest	AndroidTest

Important

Make sure to review the official exam guide:, for the latest updated exam topics: https://developers.google.com/certification/associate-android-developer/study-guide

Tools

The applications created using Android studio 4.1.1