Open Source Android Apps - Page 47
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Android Hidden APIs
A library that provides access to Android hidden APIs
Android Hidden APIs are classes, methods, and resources that Google hides from you because of stability reasons. These features are hidden because they may be changed on next API version. The internal APIs are located in package com.android.internal and available in the framework.jar, while the hidden APIs are located in the android.jar file with @hide javadoc attribute. Now you know the difference. But I will refer to both as hidden APIs. This repo contains a custom android.jar which you can use to develop your app. -
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Android Material Intro Screen
Inspired by Heinrich Reimer Material Intro and developed
Material intro screen is inspired by Material Intro and developed with love from scratch. I decided to rewrite completely almost all features in order to make the Android intro screen as easy to use for everyone and as extensible as possible. -
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Android-SwitchIcon
Google launcher-style implementation of switch (enable/disable) icon
Google launcher-style implementation of switch (enable/disable) icon. This library is compatible from API 15 (Android 4.0.3). SwitchIconView extends from AppCompatImageView so you can set icon with app:srcCompat. Set any icon (vector or image) to SwitchIconView and enjoy a switchable icon in your app. Use app:si_tint_color to set color to icon. The default color is black. Use app:si_animation_duration if you want to change switching state animation duration. Use app:si_no_dash if you don't want to draw dash, when icon is disabled. Use app:si_disabled_alpha to set alpha when icon disabled. The default alpha is .5. -
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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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Ant Design Mobile
A configurable Mobile UI
A UI component library based on Preact, React, and React Native. Provides 40+ basic components, covering all kinds of scenarios, component features rich to meet the needs of various functional Requirements. Simple enough to get started, you can load all the code at a time or only load some of the components used in the code to avoid redundancy. On the basis of not losing the features, as far as possible to ensure a single component of the smallest, best performance. Support flexible style customization, easy to generate a variety of styles to meet the needs of personalized products. We provide you with a rich resource of Sketch symbolized components, which you can use to quickly design your application. antd-mobile is the React implementation of the Ant Design's mobile specification, serving the ant and koubei wireless service. Use TypeScript to develop, provide type definition files, support type and attribute smart tips for easy business development. -
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Background Remover
A library for auto removing background from your photos
This is an Android library for removing the background from the image. You have to give the bitmap of the image to this library and the library will return the bitmap with the removed background. The default method for simply removing the background from the subject from bitmap without trimming the bitmap. Remove the empty part of the image from bitmap. true for removing empty part and false for not and by default it is false. -
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Balloon
Modernized and sophisticated tooltips, fully customizable
Modernized and sophisticated tooltips, fully customizable with an arrow and animations on Android. -
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Booster
Optimizer for mobile applications
Booster is an easy-to-use, lightweight, powerful and extensible quality optimization toolkit designed specially for mobile applications. The primary goal is to solve quality problems with the increase of APP complexity, such as performance, stability, and package size, etc. Booster provides a collection of modules for performance detection, multithreading optimization, resources index inline, redundant resources reduction, resources compression, system bug fixing, etc. Using booster, the stability of application can be increased by 15% ~ 25%, and the package size can be reduced by 1MB ~ 10MB. Potential performance issues could be found by using Booster, for example, calling APIs that may block the UI thread or main thread, such as I/O APIs. Thread management has always been a problem for developers, especially the threads started by third-party SDKs, starting too many threads may cause OOM, fortunately, these issues can be solved by Booster. -
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Busy Coder's Guide Android Development
Source code to omnibus edition of the book
The Busy Coder's Guide to Android Development is a book covering Android application development, from basics through advanced capabilities. It is updated several times a year and is available through the Warescription program. Subscribers also have access to office hours chats and other benefits. This repository contains the source code for the hundreds of sample apps profiled in the book. These samples are updated as the book is, with git tags applied to tie sample code versions to book versions. The book, and the samples, were written by Mark Murphy. All of the source code in this archive is licensed under the Apache 2.0 license except as noted. The names of the top-level directories roughly correspond to a shortened form of the chapter titles. Chapter numbers change with every release, and some samples are used by multiple chapters. -
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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. -
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Cactus
Low-latency AI inference engine optimized for mobile devices
Cactus is a low-latency, energy-efficient AI inference framework designed specifically for mobile devices and wearables, enabling advanced machine learning capabilities directly on-device. It provides a full-stack architecture composed of an inference engine, a computation graph system, and highly optimized hardware kernels tailored for ARM-based processors. Cactus emphasizes efficient memory usage through techniques such as zero-copy computation graphs and quantized model formats, allowing large models to run within the constraints of mobile hardware. It supports a wide range of AI tasks including text generation, speech-to-text, vision processing, and retrieval-augmented workflows through a unified API interface. A notable feature of Cactus is its hybrid execution model, which can dynamically route tasks between on-device processing and cloud services when additional compute is required. -
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ChatGPT-bot
Run your own GPTChat Telegram bot, with a single command
Go CLI to fuels a Telegram bot that lets you interact with ChatGPT, a large language model trained by OpenAI. -
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ClassyShark
Android and Java bytecode viewer
ClassyShark is a standalone binary inspection tool for Android developers. It can reliably browse any Android executable and show important info such as class interfaces and members, dex counts and dependencies. ClassyShark supports multiple formats including libraries (.dex, .aar, .so), executables (.apk, .jar, .class) and all Android binary XMLs: AndroidManifest, resources, layouts etc. We developed this software because we needed something lighting fast and incredibly lightweight for browsing Android APKs, so that we could check right away if everything we wanted was right inside the final executable. Right after ClassyShark loads your executable, you will see, in the left panel, the list of the root components of the archive. You can activate the view by simply clicking on the Methods count tab on top of the navigation tree. -
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Codeboard
Codeboard App
CodeBoard is an open‑source Android keyboard tailored for coding. It consolidates symbols, code navigation, editing shortcuts, and clipboard tools into one keyboard—eliminating constant layout switching between alphabets, numbers, and symbols. -
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CounterFab
FloatingActionButton subclass that shows a counter badge on the right
A FloatingActionButton subclass that shows a counter badge on the right top corner. -
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Countly
Product analytics platform
Understand and enhance your customers' journey on your web, mobile or desktop application through Countly. Countly is an innovative, real-time, open source mobile & web analytics platform, with rich push notifications and crash reporting tools. Countly securely processes billions of data points every day from mobile, desktop and web apps to help thousands of companies visualize their data, analyze and use it to grow their business. Countly is made up of two main parts: the server collecting and analyzing data, and an SDK (mobile, web or desktop) that sends this data. It comes with several great features: a single secure dashboard where you can access all user profiles, notifications, analytics and other tools; a wealth of plugins; and the option to install Countly on premises or securely in the cloud. Countly is being used by numerous companies the world over, including Apple, AT&T, BMW, SAP, Coca Cola, Sprint and many more. -
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DNS-Based Host Blocking for Android
DNS-based Host Blocker (and lightweight ad blocker) for Android
This is a DNS-based host blocker for Android. In the default configuration, several widely-respected host files are used to block ads, malware, and other weird stuff. On the first start, you must manually update the hosts files (using the refresh button) before the service can work correctly (issue #1); and you must also update the hosts files yourself regularly for now. Items in the hosts and DNS servers lists can be moved around and removed) of the list using standard RecyclerView interactions (long press makes the entry movable, swipe to either side removes it). For hosts, a later entry overrides a previous entry; for DNS servers, the first server is preferred. There's also no validation of input, so DNS servers that are not valid IPv4 addresses are not rejected, neither are URLs for DNS server entries (we intend to support URLs in the future, so you can point the app to a remote list of servers). -
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Detox
Gray box end-to-end testing and automation framework for mobile apps
High velocity native mobile development requires us to adopt continuous integration workflows, which means our reliance on manual QA has to drop significantly. Detox tests your mobile app while it's running in a real device/simulator, interacting with it just like a real user. The most difficult part of automated testing on mobile is the tip of the testing pyramid - E2E. The core problem with E2E tests is flakiness, tests are usually not deterministic. We believe the only way to tackle flakiness head on is by moving from black box testing to gray box testing. That's where Detox comes into play. Detox is built from the ground up to support React Native projects as well as pure native ones. Read the Getting Started Guide to get Detox running on your app in less than 10 minutes. We believe that the only way to address the core difficulties with mobile end-to-end testing is by rethinking some of the principles of the entire approach. -
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DevHub
Filter issues, activities and notifications
DevHub is a mobile and desktop app to help you manage GitHub Notifications and stay on top of repository activities. Save custom searches, apply filters and don't miss anything important. Create columns for the repositories and people that matters to you; receive desktop push notifications; manage notifications, issues, pull requests and activities; bookmark things for later. Choose between two modes, desktop or menubar; enable push notifications only for the columns you want. All columns support a common set of filters, like bot, label, issue status, text, etc. The Issues & Pull Requests columns are special: they give you all the power of GitHub Advanced Search on your hands (filter by assignee, number of comments, etc. Create a column for each person and see what they are up to commits, comments, issues, pull requests, tags, releases, etc. -
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Dose App
Dose is a medication reminder app for Android
Dose is a medication reminder app for Android, designed to help you stay on top of your health by reminding you to take your medications on time — Made with Jetpack Compose, Material Design 3, Room, Navigation Components, Kotlin Coroutines, Hilt, Firebase using the recommended Android Architecture Guidelines. -
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Droidrun
Powerful framework for controlling Android and iOS devices
Droidrun is a native mobile agent platform that gives users natural-language control over real Android devices to automate any mobile app workflow, from logins and bookings to purchases and data extraction, including access to mobile-only content behind app logins, rate limits, or platform restrictions. Its cloud offering lets users spin up agents in seconds with preinstalled apps, run tasks in parallel across multiple devices, and compose complex, multi-step conditional workflows using conversational commands; recorded workflows can be auto-replayed at high speed. Credential management securely stores login information once for reuse, and the system integrates with existing stacks like LLMs, N8N, or custom scripts to inject real app execution into broader automation pipelines. Developers get SDK examples (including Python integrations with Gemini or Ollama) for embedding Droidrun into their tooling. -
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EpMedia
The video processing framework based on FFmpeg developed on Android
The video processing framework developed based on FFmpeg on Android is easy to use and small in size, helping users quickly implement video processing functions. Contains the following functions: editing, cropping, rotating, mirroring, merging, separating, changing speed, adding LOGO, adding filters, adding background music, speeding up and slowing down videos, and playing audio and video in reverse. The video processing framework based on FFmpeg developed on Android is simple, easy to use, and small in size, helping users quickly realize video processing functions. Contains the following functions: editing, cropping, rotating, etc. -
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ExpandableBottomBar
A new way to implement navigation in your app
A new way to improve navigation in your app. Its really easy integrate to your project. -
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Face detector
A real-time face detection Android library
Face detector is a face detection Android library which can be easily plugged into any camera API (given it provides a way to process its frames). Face detector is built on top of MLKit's face detection API. -
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Feathers
Framework for real-time applications and REST APIs with JavaScript
Feathers is a lightweight web-framework for creating real-time applications and REST APIs using JavaScript or TypeScript. Feathers can interact with any backend technology, supports over a dozen databases and works with any frontend technology like React, VueJS, Angular, React Native, Android or iOS. Build prototypes in minutes and production-ready apps in days. Using the latest language features, Feathers is a small library that provides the structure to create complex applications but is flexible enough to not be in the way. Feathers is a “batteries included but easily swappable framework” with a large ecosystem of plugins. Include exactly what you need. No more, no less. Feathers has adapters for 12+ databases out of the box. You can have multiple databases in a single app and swap them out painlessly due to a consistent query interface. Feathers can be used the same way on the server with Node.js and in the browser with frameworks like React, Angular, VueJS or on mobile with React.
