
Learn how the paging 3 library enables efficient loading and display of paged data from local and remote sources, with error handling and clean integration with view models.
Explore the base project setup for the paging 3 android library, featuring preconfigured fragments, a navigation graph, view binding, retrofit networking, and an optional dagger integration laid out for deployment.
Learn how to add a permission to enable a function that uses the internet in the paging 3 android library, and understand the system conditions that govern internet use.
Add an endpoint for the Paging 3 Android library by creating remote response and endpoint, plus data, with clear local and remote packages.
Create a response model for the response, rename the correct field to avoid errors, and keep all data identical while wiring the service for the response.
Build a network service with Retrofit and headers to send requests. Use suspend functions and flows to fetch lists, pass data, and handle errors in a session-based format.
Create a retrofit object with the builder for a paging 3 Android network service, enabling logging and 60-second timeouts, and intercepting requests.
Create a paging model and a mapper to convert API responses into the social model we created for our fishing source.
Build a paging source for flow using the paging 3 Android library, map API responses to your model, and configure a paging adapter to handle keys and pages.
Implement a flow paging source repository for the Beijing data source, build the repository interface, and configure initial load size, max size, placeholder behavior, and distance.
Create a view model to power a paging 3 flow by wiring a repository to expose a paging source, and connect it to a fragment for the UI.
Create a reusable custom ViewModelProvider.Factory by overriding create to return the correct ViewModel when the requested class is assignable, otherwise throw an exception.
Implement a ViewModel by configuring a clean factory provider within a fragment, wiring the repository and factory, and creating a ViewModel instance for presentation.
Create a repository and an application class to manage a network service and data flow in a paging 3 android app, using manual dependency setup and no dependency injection.
Create a paging data adapter for the Paging 3 library, implementing items, unbinding, and companion object logic in a fragment to return and display data.
Implement recycler view with paging in Android using Paging 3, wiring a fragment, configuring lifecycle-aware paging phases, and testing by intercepting requests and responses as data loads in pages.
Learn to observe load state changes in paging 3 with the adaptor LoadStateListener, coordinating remote and local sources and handling loading progress and errors.
Learn how to create a paging source for RxJava, implement a model and response, load data in the background, and paginate results using single and flow patterns.
Develop and implement an RxJava paging source repository for the Android Paging 3 library by creating repository interfaces, implementing page sources, configuring paging with a factory, and integrating flow-based data.
Create a view model by organizing a new view package, implementing the model, and aligning with the existing UI structure in the view module.
Implement a view model in the Paging 3 Android library, integrating factory patterns, repositories, and dependency injection to coordinate views, fragments, and data flow.
Implement a RecyclerView with paging and reuse a single adapter across fragments, aligning the lifecycle and data flow with remote data and main activity.
Learn to implement the adaptor LoadStateListener in the paging 3 Android library to monitor a combined load state and drive UI updates, including snackbars and error messages, during pagination.
Create a task entity with a primary key and column mappings, organize the code in a dedicated package, and align the entity with API response fields.
Explore implementing flow-based data access with DAO for tasks and keys in the paging 3 Android library, including repository patterns, insert and select operations, and handling conflicts.
Explore building a RxJava DAO for tasks and keys by defining an interface and implementing insert, get all, delete, and query operations to power the service.
Create and extend a database service by building the asylum seeker service. Implement an abstract function and a non-abstract function, manage the instance, and ensure secure access with synchronization.
Create and implement an entity mapper to convert models to database entities and map lists before inserting into the database.
Learn to implement the flow remote mediator in paging 3 android library to fetch remote data via a network service, include an experimental demonstration, and return the model.
Implement flow remote mediator logic by adding helpers to fetch the first, last, and closest item keys from a list. Tie these functions to state and anchor for page navigation.
Implement suspending loads in flow remote mediator, manage initial and subsequent keys, determine list bounds, handle errors, and integrate paging with remote data sources.
Explore flow remote mediator in the paging 3 Android library, implementing policies, handling initial and end paging with next page keys, and loading from local data or a service.
Implement a flow-based remote mediator repository for paging 3 by creating a repository interface, wiring a private service, and returning a flow.
Learn to implement a flow-based remote mediator with a view model in a paging 3 Android library setup, exposing a list via a repository and integrating into a fragment.
Implement flow remote mediator in a view model using the paging 3 android library to load data from network and manage paging state within a fragment.
Build and customize a RecyclerView adapter for paging 3 on Android, reuse the same view, safely create new adapters, and align the entity to ensure consistent data presentation.
Implement adaptor for the Paging 3 Android library by wiring fragments and views, then run the app to identify and fix errors as category flows load.
Implement recycler view setup and related configuration in the paging 3 Android library, toggle progress visibility based on loading state, and test a sample remote data flow.
Learn how adaptor load state is managed in paging 3 Android library, including caching data locally, falling back to local sources when the API fails, and debugging state transitions.
Learn how to implement a RxJava remote mediator, create and wire a service, map responses to entities, and manage paging keys and local storage to fetch and cache remote data.
Explore RxJava RemoteMediator for paging 3, focusing on managing first, next, and previous keys, handling invalid keys, and integrating network responses into the paging flow.
Explore how RxJava RemoteMediator handles paging in the Paging 3 library, mapping data, managing initial loads and errors, and streaming success and failure paths in remote data flows.
Build a RxJava remote mediator repository for paging 3 by defining interfaces and implementing concrete repository classes, then configure its integration with the remote data service.
Implement an RxJava RemoteMediator view model within the Paging 3 Android library, extend and wire it into a fragment, and test the data flow and return types.
Implement an RxJava remote mediator viewmodel to coordinate a network service, manage data flow via subscriptions, and feed an adapter for paging in Android.
Learn to implement a RecyclerView adapter with the Android paging 3 library, wiring a fragment to load and paginate data, and test local database and remote mediator flows.
Learn how to implement adaptor load state handling in paging 3 for Android by wiring a listener to manage loading and error states and to update headers during pagination.
Implement a load state view holder to manage loading, error, and idle states in a paging adapter. Show progress during loading, display error messages, and hide views when not loading.
Develop a load state adaptor for the paging 3 android library by creating a dedicated class, implementing its members, and wiring it to fragments for state handling.
Implement the load state adaptor in the paging 3 android library within a flow fragment to manage loading states, errors, and retries across segments.
Create a UI model for a paging 3 android library by separating concerns in the view, wiring interactions, and adapting the UI to reflect state and data.
Create a task item view holder for Paging 3 in Android, using binding and a companion object to instantiate and manage task items.
Develop and implement a separator item view holder within the paging 3 android library, adopt the approach, wire views, and prepare for subsequent steps.
Learn to implement a UI model adaptor for paging 3, handling old and new items, binding and unbinding, and managing item transitions with on create logic.
Implement the UI model adaptor within the Paging 3 Android Library by wiring the mediator, models, and adapter to render separate items and segments in a cohesive data flow.
The Paging 3 library helps you load and display pages of data from a larger dataset from local storage or over network. This approach allows your app to use both network bandwidth and system resources more efficiently. The components of the Paging 3 library are designed to fit into the recommended Android app architecture, integrate cleanly with other Jetpack components, and provide first-class Kotlin support.
By the end of this course, you will have a good understanding of Paging 3 library and will be able to implement it in your own project. We will cover the topic on Paging Source, Remote Mediator, Load State, Header, Footer, UI Models etc. We well cover both Kotlin Flow and RxJava with Paging 3 library.
This course is fully practical and we will build an Android application from scratch. We will be using a MVVM architecture and we will use the Android library like Retrofit, Room, Coroutines, Flow, RxJava, Timber etc.
The Paging 3 library includes the following features:
In-memory caching for your paged data. This ensures that your app uses system resources efficiently while working with paged data.
Built-in request deduplication, ensuring that your app uses network bandwidth and system resources efficiently.
Configurable RecyclerView adapters that automatically request data as the user scrolls toward the end of the loaded data.
First-class support for Kotlin coroutines and Flow, as well as LiveData and RxJava.
Built-in support for error handling, including refresh and retry capabilities.