Tasks

1. Hello world

Create a plain Android App project. (target version is Android 6). All work must be performed inside git repository.
Set-up a basic app versioning. Application package should have proper version code and version name according to SEMVER (Semantic Versioning). Version name should contain major, minor and patch version digits. Version tracking should be performed by utilizing git tag feature. Each tag should be formatted as "MAJOR.MINOR" (e.g. 1.3), PATCH number represents a number of commits performed after latest release (latest tag).
Resulting release APK should be signed with personal certificate automatically during build.
The only activity of application should display current version name and device ID (which is secured by corresponding runtime permission).
You should properly handle runtime permission and give user a dummy explanation why it is necessary to grant this permission. App should withstand screen rotation and other possible test-cases.

Topics to cover: android versions, gradle, git, permissions, google play app requirements, build variants, product flavors.

Create 'Calculator' app.
Application should have two modes: basic and scientific (see, well, any calculator for reference).
Modes can be toggled via interface button.
Each set of functions (numbers + basic functions and scientific functions) should be in separate fragments.
For landscape device orientation app should always be in scientific mode.
Create a 'demo' build flavor with only basic functions available for both screen orientations. User should be able to have both 'demo' and 'full' versions on device at the same time.

Topics to cover: activities, fragments, views, controls, basic app architecture, product flavors.

Create 'Notes' application. (see Google Keep for reference).
App should show a list or a grid of created notes depending on screen orientation (list for portrait and grid for landscape).
Each note should consist of title, body and tag list. Title may not be empty. If user left it out empty, a current date should be used instead. Tag list may be empty.
List or grid may be sorted by date or note title. User can also browse notes by particular tag.
Any data storage option may be used. Note list should be persisted across app launches.

Try to use components from google material design. Take a look at android app architecture guides across internet to avoid common pitfalls.

Topics to cover: activity lifecycle, fragment lifecycle, data storage, app architecture.

Create RSS reader application (see Flipboard for reference).
On first launch app asks user to type in RSS feed URL. This can be changed later.
RSS entities are displayed within list view. EAch entity should contain date, title, preview of content and an image (if provided by feed source).
When user taps on list item, a WebView with full entity should be displayed.
10 recently fetched news should be cached and available to user even if no network is available.
App should track and display network state (icon, snackbar, etc). User should be aware when app goes offline and online.
All network operations should not block user interface and should have loading indicator if necessary.

Topics to cover: images, network, storage.

Create a 'Battleship' game.
Two players should be able to participate in game from different devices.
Firebase or similar service should be used as back-end replacement.
Player can authenticate using any auth provider (Google, social network, etc) or plain email-password pair.
User 1 creates a game gives game ID to opponent.
Opponent (user 2) joins the game via given ID.
User 1 device acts as a server and is responsible for game state updates.
User 2 device subscribes to state changes in DB and updates interface.
It is possible to look through statistics of previous games in game menu.

Topics to cover: network, async operations, advanced UI practices.