Open Source Android Libraries - Page 5
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Libraries for Android
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Android PDF Writer (APW) is a simple Java library to generate simple PDF documents in Google's Android devices released under the BSD license.
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Android PDF Writer Enhanced (APWE)
Library to create PDF files from Android
This library allow to create PDF files from Android versions older than API 19, where PDF support was added. It's based on APW project by Javier Santo Domingo located at: https://sourceforge.net/projects/apwlibrary/ -
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Android PDF Writer Enhanced Demo
Demo for Android PDF Writer Enhanced Library
This is a demonstration of the features of Android PDF Writer Enhanced library. -
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Android Sliding Up Panel
A simple way to add a draggable sliding up panel to Android apps
This library provides a simple way to add a draggable sliding up panel (popularized by Google Music and Google Maps) to your Android application. As seen in Umano Android App (now acquired by Dropbox). If you are using the library and you would like to have your app listed, simply let us know. Simply add the following dependency to your build.gradle file to use the latest version. Include com.sothree.slidinguppanel.SlidingUpPanelLayout as the root element in your activity layout. The layout must have gravity set to either top or bottom. Make sure that it has two children. The first child is your main layout. The second child is your layout for the sliding up panel. The main layout should have the width and the height set to match_parent. The sliding layout should have the width set to match_parent and the height set to either match_parent, wrap_content or the max desireable height. -
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Android Tech Frontier
Translates high-quality Android technology, open source libraries
Android Tech Frontier is a curated, comprehensive digest of cutting-edge Android engineering knowledge, architecture patterns, system internals, performance practices, and technical discussions — aimed at intermediate to advanced Android developers who want to deepen their understanding of the platform. The repository aggregates articles, analysis, and mini-tutorials that explore topics such as ART and Dalvik internals, memory management, rendering pipelines, custom view performance optimization, threading and concurrency on Android, JNI interactions, and network stack behavior. Instead of being a simple “how-to” list, it dives into the “why” behind complex behaviors, helping developers reason about Android system design and tradeoffs at a deeper level. This makes the resource suitable for engineers working on performance-critical apps, large codebases, or teams that debug subtle systemic bugs. -
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Android components
A collection of Android libraries to build browsers
A collection of Android libraries to build browsers or browser-like applications. A fully-featured reference browser implementation based on the components can be found in the reference-browser repository. We encourage you to participate in this open source project. We love pull requests, bug reports, ideas, (security) code reviews or any kind of positive contribution. -
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Android-Bootstrap
Bootstrap style widgets for Android, with Glyph Icons
Android Bootstrap is an Android library which provides custom views styled according to the Twitter Bootstrap Specification. This allows you to spend more time on development rather than trying to get a consistent theme across your app, especially if you are already familiar with the Bootstrap Framework. Create buttons that support Glyph icons, and are themeable using Bootstrap Brands. BootstrapButtonGroup Allows BootstrapButtons to be grouped together and their attributes controlled en masse. BootstrapProgressBar Displays progress in a bar from 0-100, and animates updates to the current progress. BootstrapLabel Displays non-clickable text in a widget similar to the BootstrapButton, sizable using H1-H6 elements. BootstrapCircleThumbnail Displays images in a center-cropped Circular View, themed with BootstrapBrand. -
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Android-State
A utility library for Android to save objects in a Bundle
A utility library for Android to save objects in a Bundle without any boilerplate. It uses an annotation processor to wire up all dependencies. It's recommended to turn on a global setting in your Application class to save and restore the instance state of all activities and fragments from the support library. After that you only need to annotate your fields with @State inside of your fragments and activities. You can save any type which can be saved in a Bundle like the String, Serializable, and Parcelable data structures. -
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AndroidAdapters
A library, which provides various Adapters for Android apps
"AndroidAdapters" is an Android-library, which provides feature-rich adapter implementations for providing the underlying data of widgets such as ListView, GridView, ExpandableListView and RecyclerView. -
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AndroidEventBus
Library for android, simplifies communication between services
AndroidEventBus is an Android-oriented event dispatching library that provides a flexible, lifecycle-aware, and decoupled mechanism for managing communication between components without tight coupling — especially useful in large, modular applications. It allows developers to define and post custom events that can be observed by multiple parts of an app, such as UI controllers, services, or background workers, without requiring direct references between senders and receivers. Unlike simple observer patterns, AndroidEventBus typically integrates with Android lifecycles so that subscribers are automatically registered, paused, or cleaned up based on activity/fragment state — reducing memory leaks and errant behavior during configuration changes. The library aims to simplify common inter-component messaging tasks (like posting a login success event or notifying multiple listeners of state changes) while preserving type safety and performance. -
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AndroidOfferKiller
Help you get a better offer
AndroidOfferKiller is a curated collection of Android interview resources aimed at helping developers secure stronger job offers. It brings together notes and materials across topics such as Java and JVM basics, Android fundamentals, design patterns, data structures and algorithms, and LeetCode-style problem solutions. The repository also links to deep-dive articles on performance and common pitfalls, for example RecyclerView stutter and optimization strategies, making it a practical study companion rather than just a list of questions. It includes sections about referral channels and hiring information for certain companies, highlighting real-world hiring context in addition to theory. The project positions itself as an all-in-one preparation hub where you can review core CS topics, Android specifics, and optimization best practices before interviews. It is open-source and licensed under Apache-2.0, allowing learners to contribute new questions, solutions, and articles over time. -
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AndroidStandardDevelop
Best practices in Android develop(final)
AndroidStandardDevelop is a comprehensive set of Android development guidelines created to standardize how teams write, structure, and maintain Android projects. It focuses on improving readability, maintainability, and the efficiency of code reviews by defining clear conventions for naming, project structure, and coding style. The document covers many aspects of Android projects, including Android Studio configuration, code style, resource file organization, version management, use of third-party libraries, comments, and testing practices. It is written as a “final” best-practice guide, drawing from the author’s years of experience and synthesized input from multiple companies’ conventions. The repository is documentation-only and is meant to be adopted or adapted by teams as their official Android style guide. It is licensed under the Apache-2.0 license, making it easy to reuse or integrate into internal wikis and onboarding material. -
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AngularFire
The official Angular library for Firebase
AngularFire smooths over the rough edges an Angular developer might encounter when implementing the framework-agnostic Firebase JS SDK & aims to provide a more natural developer experience by conforming to Angular conventions. Provide and Inject Firebase services in your components. Stable zones allow proper functionality of service workers, forms, SSR, and pre-rendering. Utilize RxJS rather than callbacks for realtime streams. Integrate with NgRx using AngularFire's action based APIs. AngularFire dynamically imports much of Firebase, reducing time to load your app. Get your Angular application deployed on Firebase Hosting with a single command. Zero-effort Angular Router awareness in Google Analytics. Guard your Angular routes with built-in Firebase Authentication checks. -
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Anko
An Android application development library
Anko is a Kotlin library which makes Android application development faster and easier. It makes your code clean and easy to read, and lets you forget about rough edges of the Android SDK for Java. Anko was born as a type-safe DSL for building Android layouts. It not only allowed creating layouts in a type-safe way, but it made the layouts more adaptable, dynamic, reusable, and also performant, as there was no need for expensive layout inflation. Anko consists of several parts that make up the complete framework, which are: Anko Commons: a lightweight library full of helpers for intents, dialogs, logging and so on. Anko Layouts: a fast and type-safe way to write dynamic Android layouts. Anko SQLite: a query DSL and parser collection for Android SQLite. Anko Coroutines: utilities based on the kotlinx.coroutines library. -
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Anvil
A Kotlin compiler plugin to make dependency injection with Dagger 2
Anvil is a Kotlin compiler plugin to make dependency injection with Dagger easier by automatically merging Dagger modules and component interfaces. In a nutshell, instead of manually adding modules to a Dagger component and making the Dagger component extend all component interfaces, these modules and interfaces can be included in a component automatically. -
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Arrow
Functional companion to Kotlin's Standard Library
Arrow Core includes types such as Either, Validated and many extensions to Iterable that can be used when implementing error handling patterns. Core also includes the base continuation effects system, which includes patterns to remove callbacks and enables controlled effects in direct syntax. Some applications of the effect system reduce boilerplate and enable direct syntax including monad comprehensions and computation expressions. Arrow Fx is a next-generation Typed FP Effects Library that makes tracked effectful programming first class in Kotlin built on top of Kotlin’s suspend system and KotlinX Coroutines Arrow Fx is a functional companion to KotlinX Coroutines augmenting its api with well known functional operators making it easier to compose async and concurrent programs. The library brings purity, referential transparency, and direct imperative syntax to typed FP in Kotlin, and is a fun and easy tool for creating Typed Pure Functional Programs. -
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Autobahn|Java
WebSocket & WAMP in Java for Android and Java 8
Client library providing WAMP on Java 8 (Netty) and Android, plus (secure) WebSocket for Android. The WebSocket layer is using a callback-based user API, and is specifically written for Android. Eg it does not run any network stuff on the main (UI) thread. The WAMP layer is using Java 8 CompletableFuture for WAMP actions (call, register, publish, and subscribe) and the Observer pattern for WAMP session, subscription and registration lifecycle events. The library is MIT licensed, maintained by the Crossbar.io Project, tested using the AutobahnTestsuite and published as a JAR to Maven and as a Docker toolchain image to Dockerhub. -
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Awesome AWS
A curated list of awesome Amazon Web Services libraries
A curated list of awesome Amazon Web Services (AWS) libraries, open source repos, guides, blogs, and other resources. Featuring the Fiery Meter of AWSome. Each repo listed meets at least one of the following requirements, community-authored repo with 100+ stars, community-vouched repo with < 100 stars, official repo from aws or awslabs. 100+ stars for community repos is not a strict requirement, it only serves as a guideline for the initial compilation. If you can vouch for the awesomeness of a repo with < 100 stars and you can explain why it should be listed, please submit a pull request. Pull requests might be left open for a period of time to let the community chime in and vouch for it. An official repo from aws or awslabs can be removed if the community wishes. The Python module awesome-aws regularly scans repos on Awesome AWS to maintain the accuracy of the Fiery Meter of AWSome. -
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BasePopup
Create a universal and convenient PopupWindow popup library
BasePopup is a popup library that encapsulates and improves the system PopupWindow. It is a basic library class with a very high degree of freedom and rich API. You can easily complete various popups under the framework of BasePopup. Switching between Release and Snapshot versions may cause Build to fail. At this time, you can clean the Project. QuickPopup adds new APIs and modifies the implementation of QuickPopupConfig to make the code cleaner and cleaner. In response to historical issues, we have unified the role of the root layout margin under match_parent and wrap_content this time. Now the role is consistent with the system and used as margin instead of offset. -
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Beagle
Customizable debug menu library for Android apps
A smart, reliable, and highly customizable debug menu library for Android apps that supports screen recording, network activity logging, and many other useful features. -
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Blurhash
Library to show colorful blurry placeholders while your content loads
A library to show colorful blurry placeholders while your content loads. Does your designer cry every time you load their beautifully designed screen, and it is full of empty boxes because all the images have not loaded yet? Does your database engineer cry when you want to solve this by trying to cram little thumbnail images into your data to show as placeholders? Replace boring grey boxes with beautiful blurhash states and the designers will be happy. Blurhash strings are short enough to be added as a field in a JSON object and to be stored in a database. The implementations are small and easy to port to new languages, and the end result is a smooth and interesting experience for your users. In short, BlurHash takes an image and gives you a short string (only 20-30 characters!) that represents the placeholder for this image. You do this on the backend of your service and store the string along with the image. -
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BottomDialogs
An Android library that shows a customizable Material-based bottom
Android Library that shows a customizable Material-based bottom sheet. -
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BottomSheetPickers
Third-party date and time pickers for Android
BottomSheetPickers is an Android UI library that provides alternative date and time picker components designed to replace the default system pickers with a more modern bottom sheet interface. It supports Android API level 14 and above, making it compatible with a wide range of devices, including older versions of Android. The library includes multiple picker styles such as number pad time pickers and grid-based pickers, offering different interaction models depending on the use case. These pickers are implemented as dialog fragments, allowing them to integrate smoothly into existing Android applications while maintaining lifecycle awareness. The library is built on top of Android support libraries and can be customized through various configuration options such as themes, callbacks, and builder patterns. Developers can easily handle user input through listener interfaces, enabling flexible integration with application logic. -
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ButterKnife
Bind Android views and callbacks to fields and methods
ButterKnife is an annotation-based view binding library for Android that reduces boilerplate in Activities, Fragments, and custom views. Developers replace repetitive findViewById calls with BindView fields and define UI event handlers using annotations like @OnClick, with the library generating efficient binding code at compile time. Because it relies on annotation processing, there’s no reflection at runtime, keeping startup paths lean and predictable. The generated bind/unbind lifecycle helps avoid memory leaks by clearing references when views are destroyed. Butter Knife made UI code more readable and maintainable for years, especially in large codebases with complex layouts and many event hooks. While newer Android APIs now offer official view binding alternatives, the project remains a landmark example of how code generation can simplify everyday Android development.