What is Android Jetpack?
Jetpack is a collection of libraries that can be used individually or together, to help build a flexible and powerful application. These are just some of the benefits:
- Allow apps to run on all Android platform versions.
- Independent functionality.
- Easier for new developers to learn best practices.
- Backward compatibility.
- Google features up-to-date design techniques.
- Productivity features.
- Better testability.
- Integrated to resolve issues.
This is what it means to have a functional app that is easy to test and construct with Kotlin language support.
- AppCompat – Allowing these features to be used on older versions of Android
- Android KTX – Integrated set of extensions for writing clear and concise Kotlin code.
- Multidex – Support system for multiple dex files.
- Test– Providing a robust and effective testing framework for unit and runtime UI tests.
These libraries help us design and architect our apps with the ease of maintenance and testability in mind.
- Data Binding – Easily bind UI components to data sources using a declarative format.
- Lifecycles – A set of components managing lifecycles of activities and fragments.
- LiveData – A lifecycle-aware components acting as a data holder that can be observed by activities, fragments or services.
- Navigation – A set of features for improving user experience by handling complex navigation tasks.
- Paging – Assist in loading information gradually and on-demand from a data source reducing the toll on resources.
- Room – An abstraction layer for SQLite database tasks for more efficient CRUD functionality.
- ViewModel – A lifecycle-aware component handling UI-related data.
- WorkManager – Helps us manage background functions with conditions we set in place.
A set of libraries that help our user interact with the UI.
- Download Manager – Conduct downloads in the background, taking care of HTTP interactions and retrying downloads after connectivity changes or failures.
- Media & playback – Backwards-compatible APIs for media playback and routing (including Google Cast).
- Permissions – Compatibility APIs for checking and requesting permissions in-app.
- Preferences – Create interactive settings screens for users to configure.
- Notifications – Provides a backward-compatible notification API with Wear and Auto support.
- Sharing – Provides a share action suitable for an app’s action bar.
- Slices – UI templates for displaying flexible and interactive content, enabling engagement outside of the fullscreen app experience.
It provides widgets and helpers to make your app easy to use.
- Animations and Transitions – Give feedback to users on UI interactions by animating the layouts.
- Auto – Build apps to connect users on the road through Android Automotive OS and the Android Auto app.
- TV – Allow users to experience your app on a bigger screen.
- Wear – Design apps for Smartwatches further enriching the user experience.
- Emoji – Keep Android devices up to date with the latest emoji.
- Fragment – A reusable portion of user interface that can be combined to produce an activity with multi-pane UI.
- Layout – Organise your app structure using a hierarchy of View and ViewGroup objects.
I hope this article has given you a clear overview of what’s included in Android Jetpack. The components help resolve all of the pain points Android developers used to face. Google has done a marvelous job for us and it is something that iOS development is struggling to keep up with.
This is especially useful for total beginners. Make use of these libraries to help you write a better structured and functional application. I have compiled a list of FREE resources below for you start looking at.