This article explains how to convert a series of images into a video on Android, compares two processing pipelines, and details the implementation of custom OpenGL transition effects—including slide, pixelation, ripple, and random‑grid—using MediaCodec and shader programs.
This article demonstrates how to leverage uiautomator1.0 for Android automation by creating a shell‑based Context, accessing PackageManager, managing SQLite databases, monitoring app activities and processes, and implementing Chinese text input through AccessibilityNodeInfo.
This article explains the principles behind Java 8 lambda expressions and the invokedynamic bytecode instruction, then examines how Android indirectly supports these features through tools like RetroLambda, Jack & Jill, and the D8 dex compiler, detailing their desugaring processes and limitations.
This article examines Flutter's hybrid stack on Android, explaining its evolution, the problems caused by multiple engines and views, and reviewing community and official solutions such as Flutter Boost's view and engine reuse approaches with code examples.
The article explains how Java 8 lambda expressions rely on the invokedynamic bytecode instruction, and how Android compensates for its absence by desugaring lambdas through RetroLambda, the now‑deprecated Jack & Jill toolchain, and the modern D8 compiler, each generating synthetic classes for runtime execution.
This article explains how to protect communication in hybrid Android applications by using native C/C++ encryption libraries, secure HTTPS handling, zip‑based Web resource protection, and anti‑tampering/replay mechanisms, providing practical code examples and architectural guidance for developers.
Hardcoder is an Android framework enabling apps to directly request hardware resources via a client‑server channel, improving performance by 10‑30% with minimal power cost, independent of Android API levels, adopted by major manufacturers, and open‑sourced for developers to optimize apps.
Flutter‑boot is an open‑source CLI that streamlines hybrid Flutter module development by providing a standardized project layout and automated commands—create, link, remotelink, and update—to integrate Flutter into existing iOS/Android apps, enable local and cloud builds, and cut setup to a single command and two lines of code.
This guide explains how to build an Android automation script that uses ADB screenshots and OpenCV template matching to detect and repeatedly pull cards in a game, handling start, SSR/SR detection, and completion without manual interaction.
The article presents a flexible, Sketch‑driven theme‑customization workflow for car‑navigation apps in which UED designers create and upload resources to a cloud platform, Jenkins packages them into the APK, and real‑device previews verify the result, enabling developers‑free, low‑cost, rapid, and maintainable UI theming across multiple projects.
Baidu App replaced its original two‑view nested‑scrolling setup with a flexible, component‑based solution that leverages Android’s NestedScrolling API to coordinate any number of child views—via ILinkageScroll, LinkageScrollHandler and ChildLinkageEvent—handling pre‑scroll, fling, scrollbar aggregation, and a Xiaomi‑specific OverScroller fix, with code available open‑source.
Hamber Luo, Android lead at Jike app, will present at Droidcon Shanghai 2019 on Android Jetpack Permissions, sharing his extensive Android experience, a code example, and practical advice for quickly adopting Jetpack and Kotlin in mobile development.
Hardcoder is an open‑source Android framework that creates a direct communication channel between apps and device hardware, enabling precise CPU, core, and GPU resource scheduling to boost performance by up to 30 % while adding only minimal power overhead.
This article examines WeChat's approach to Android data storage issues, detailing the limitations of internal and external storage, the gradual migration strategy, and the design of the wechat‑vfs component that provides abstracted file migration, encryption, and cleanup capabilities.
This article provides a detailed checklist of Android app testing items—including smoke, installation, functionality, stability, performance, security, and special scenario tests—along with practical tips, links to technical resources, and notes on quality platform integration.
This article shows how to implement a post‑test reminder for UiAutomator by using screen sleep and wake‑up logic, providing Java code that checks the screen state, re‑activates it if needed, and optionally sets screen brightness via an ADB command.
This article explains the differences between CI, continuous delivery, and continuous deployment, then details a Jenkins‑based pipeline that uses Gradle, 4399AT, Sonar, GitLab, Tomcat, and Nginx to automate building, testing, and reporting for Android applications.
This article explains how to integrate and use ADBLib within an Android app, covering required Gradle and manifest configurations, step‑by‑step procedures for establishing a TCP/IP connection, generating encryption keys, retrieving the device IP, creating socket connections, and executing ADB commands, along with an overview of ADBLib’s underlying architecture.
This article explains how to modify a Java UiAutomator helper to use the adb -s option, allowing simultaneous debugging and test execution on two Android devices by adding an extra device identifier parameter to the helper methods.
This article explains the design and implementation of Android's Handler mechanism, detailing how Handlers, Messages, MessageQueue, and Looper work together to enable thread communication, avoid memory leaks, and manage message sending, queuing, and processing, with source code examples and best practices.
The article dissects Glide’s five‑level caching system—active resources, memory cache, resource and data disk caches, and network cache—explaining how active weak references feed the LRU memory cache, how DiskCacheStrategy governs transformed and raw data storage, and how I/O and network tasks run on separate executors while network responses are cached before delivery.
This article explores the key differences between Kotlin and Java for Android development, covering constructors, init blocks, val versus final, static equivalents with companion objects, top‑level declarations, arrays, collections, sequences, visibility modifiers, and includes practical exercises.
This article explains how Android parses the AndroidManifest, assigns UID and updates permissions during APK installation, covering system boot installation, PMS‑driven third‑party, ADB and Market installations, and provides code snippets to illustrate the underlying mechanisms.
Google and Udacity have launched two free Kotlin video courses that teach beginners the language fundamentals and guide them through building Android apps, covering Jetpack components, popular libraries, and coroutines, ultimately enabling the creation of over ten practical applications.
This guide walks Android engineers through adding Kotlin support to new or existing projects, explains Kotlin's variable declarations, null‑safety features, type inference, val/var usage, visibility modifiers, class inheritance, open/final semantics, and safe casting, providing concise code examples and practical tips.
By replacing MTFlexbox’s deep view hierarchy with Litho’s flattened component tree and moving template parsing to a background thread, Meituan’s app cuts memory usage by over 30 MB, removes FPS spikes on low‑end devices, and improves scrolling performance while preserving custom‑tag and image handling.
This article describes the background, design principles, layered architecture, and implementation details of a modular mobile framework that separates business, functional, UI, and support layers to enable rapid app development, easy extension, and reduced coupling.
The article describes a situation where background threads continue running after the main thread ends during Android app performance testing, analyzes the cause—sleep calls in auxiliary threads—and demonstrates how to correctly terminate them using Thread.join and a helper method.
This article details Meituan's end‑to‑end development of a merchant‑side mobile video feature, covering background needs, architecture design, technology selection, implementation of playback, recording, composition, cutting, processing pipelines, encountered pitfalls, monitoring strategies, and future optimization directions.
The author shares a practical UiAutomator solution that captures screenshots, extracts bitmap data, and analyzes pixel colors to programmatically determine whether a UI element appears blue, including reusable helper methods for retrieving individual red, green, blue, or full RGB values.
This article introduces Kotlin DSL concepts, demonstrates real‑world applications such as Trip.com payment network encapsulation, overseas payment SDK Gradle scripts, Anko layouts, and provides a step‑by‑step example for creating a custom DSL, highlighting benefits, trade‑offs, and best practices for mobile development.
This article explains how to automate the login process for multiple Android channel packages by packaging a Java UiAutomator script into a JAR, pushing it to the device, iterating over each APK, executing ADB commands, and logging success or failure for each login method.
This article shares a Java‑based tool packaged as a JAR that lets developers precisely control the number and interval of app launches during Android Monkey testing, while also managing WiFi state, featuring multithreaded execution and ADB command integration.
This article presents a customizable Java helper class for Android UiAutomator that streamlines test project creation, build modification, APK deployment, and test execution, complete with detailed code, command explanations, and logging utilities for flexible mobile UI testing.
This guide shows how to create reusable UiAutomator helper methods that perform long‑press actions on Android UI elements—by resource ID, visible text, or explicit coordinates—using a swipe call with a 300‑step duration, and mentions extending the approach to custom gesture paths.
This article explains how to use UiAutomator scripts combined with Java multithreading to continuously refresh an Android app’s home page while capturing logs and performance metrics, including full code examples for command execution, timestamp handling, and test loops.
This article explains how to automatically rerun failed Android UiAutomator test cases, collect their results, and generate a detailed Excel report using Java code that handles both initial and retry executions.
This article shares practical experiences from developing the Shenghai crash monitoring SDK for Android, covering Java exception capture, stack trace collection, processing, real‑time reporting, crash metrics, and ANR detection using FileObserver and WatchDog mechanisms.
This article explains how Flutter’s PlatformChannel works, detailing the communication flow from Dart to Android and back, including the role of MethodChannel, BasicMessageChannel, and EventChannel, with code examples and a step‑by‑step analysis of the underlying engine implementation.
This article explains the fundamentals of Android MediaCodec, its advantages over software codecs, usage patterns, supported MIME types, practical implementations for video editing and live streaming, and presents a performance comparison showing lower CPU and memory consumption.
This article shares a comprehensive collection of reusable UiAutomator methods—including swipe gestures, screenshot handling, image analysis, UI element lookup, waiting strategies, click actions, scrolling, app launch/stop commands, and miscellaneous helpers—providing Android developers with ready‑to‑use Java code for robust UI automation testing.
This guide shows how to automatically change the Android input method to UTF‑7 or any other IME during UiAutomator tests by executing ADB commands, listing available IMEs, and handling command output on both macOS and Windows environments.
iQIYI’s one‑click Android app health check provides a lightweight, universal solution that automatically installs, traverses, and analyzes apps on a 100‑device cloud farm using ATX‑based drivers, OCR‑driven UI interaction, deep‑learning UI anomaly detection, static security analysis, performance metrics, and crash/ANR reporting, seamlessly integrating into CI pipelines.
The article explains why video encoding is essential for compression and compatibility, describes the video data processing pipeline, compares four encoding schemes (ffmpeg+x264, openh264, MediaRecorder, MediaCodec) offered by a short‑video SDK, and recommends suitable solutions for various recording and streaming scenarios.
This guide shows how to use the adb shell dumpsys gfxinfo command to capture frame‑per‑second metrics for an Android app and provides a reusable Java class that runs in a separate thread, parses the output, and stores the results for performance analysis.
When using UiAutomator on macOS you must prepend the full path to the Android command and adjust slash handling, otherwise you encounter "Cannot run program" errors; this guide shows the errors, the required fixes, and provides a complete Java helper class for automated testing.
This article introduces Facebook's Hermes JavaScript engine, details its integration into React Native Android projects, explains its bytecode precompilation and JIT‑free design, presents performance benchmarks versus JavaScriptCore and V8, and discusses current limitations and future considerations.
The article describes a problem encountered while learning Android UiAutomator—determining the number of assignment items on a screen—and presents a Java solution that iterates over UI elements using a custom getCountByResourceId() method, similar to Selenium's findElements(), with a code example illustrating the approach.
When clearTextField() fails to delete entire content—especially for Chinese characters—in Android UI automation, this article presents a custom cleartext() method that retrieves the field length and programmatically sends delete key events to reliably clear the input.
AoE (AI on Edge) is Didi’s open‑source runtime that unifies edge inference frameworks such as NCNN and TensorFlow Lite behind stable, easy‑to‑use and secure interfaces, isolates native code in a separate Android process, offers pre‑/post‑processing abstractions, provides Android/iOS SDKs, and invites developers to contribute via its GitHub repository.
This tutorial shows how to use the polar equation of a heart, convert mathematical coordinates to screen coordinates, and employ UiAutomator's swipe method to draw a heart shape on an Android device using Java.
This article provides a comprehensive walkthrough of Android's immersive status bar evolution, explains the three API stages from KitKat to Android 9, demonstrates practical code for each version, and shows how to use the ZanImmersionBar library to simplify and customize immersive UI across activities, fragments, dialogs, and pop‑ups.
The author encountered unexpected security‑warning pop‑ups during Android UIAutomator testing and created a UiWatcher that automatically clicks "Do not remind" and "Allow" to keep the test flow uninterrupted, sharing the full code for others to use.
This article explains how to develop an Android input‑method service that displays a custom emoji keyboard, retrieves image paths, commits them to the active app, and uses AccessibilityService to automate sending, covering project setup, core APIs, XML keyboard layout, and advanced optimization techniques.
This article reviews Harmony OS, detailing its distributed architecture, four key technical features, the concept of cross‑platform as cross‑device, compares Java and Android’s compilation approaches, and explains how Huawei’s Ark Compiler and multi‑device IDE enable true cross‑device development and efficient execution across phones, wearables, cars and other smart devices.
This guide explains the environment setup, connection steps, parameter selection, data collection, and result interpretation for an Android performance monitoring tool that measures traffic, memory, CPU usage, FPS, and network speed during app testing.
This guide explains how to use Java's Runtime API within a UiAutomator test to start, filter, and safely terminate an adb logcat process, including a complete Logcat thread implementation and tips for preventing oversized log files.
This article presents a Java‑based solution that repeatedly launches and closes an Android app while capturing logcat output to automatically calculate splash‑screen and home‑screen launch times, providing a reproducible method for accurate performance testing.
This guide explains how to construct a Uiautomator 1.0 jar package using Ant within Android Studio, covering required SDK tools, project setup, build.xml generation, Gradle integration, jar composition, execution flow, and a sample custom test service implementation for Android testing.
When running unattended Android monkey tests, unexpected WiFi shutdowns can disrupt results, so this guide shows how to build a lightweight Java app that checks WiFi status every minute and toggles it every ten minutes using ADB commands to keep the network stable.
This tutorial shows how to clone a sample Android Gradle repository, build both debug and release APKs using the Gradle wrapper, and upload the generated packages to the Fir platform for testing on mobile devices.
This tutorial explains how to download and install JDK 8, set up Android SDK tools, install Gradle, and configure environment variables on a Linux system, including verification commands and a brief FAQ for common issues.
This guide explains how to set up Android project packaging paths, write Python upload scripts for fir.im and Pgyer, configure a Jenkinsfile with checkout, build, and upload stages, and define Jenkins global variables and parameters for automated CI/CD of mobile apps.
This article details how Baidu App reduced the landing‑page first‑screen load from over 2600 ms to under 2000 ms by analyzing user feedback, instrumenting each loading stage of its Hybrid H5 solution, and applying a series of backend‑direct‑output, prefetch, WebView pre‑creation, lazy‑load and kernel‑level rendering optimizations together with code‑level fixes.
This article presents a real‑device performance test of three data serialization structures—JSON, Protocol Buffers, and FlatBuffers—used in H5‑Hybrid and Flutter development, analyzing their size, serialization/deserialization speed, and suitability for Android, Flutter, and H5 communication channels.
To avoid test failures caused by being logged into an unintended account, the author implements a recursive login routine in an Android UiAutomator script that checks the current user, logs out if necessary, and re‑logs in with the correct credentials, illustrating a concise and reusable testing solution.
The article explains why the Java compiler generates synthetic access$xxx methods for inner‑class field access, describes their negative impact on dex size, multidex, APK size and performance, and details a practical ASM‑based approach to safely eliminate them while handling related Dalvik bugs.
ARetrofit is an Android routing framework that enables concise, component‑to‑component communication by generating compile‑time route metadata via annotation processing, injecting bytecode with the Transform API, creating service proxies through dynamic proxies, and applying an OkHttp‑style interceptor chain for flexible, cross‑module extensions.
The article presents YouZan’s hybrid integration strategy that packages each Flutter feature as an independent artifact—AAR files for Android and frameworks for iOS—allowing native teams to embed Flutter modules via simple scripts and Maven uploads without needing a full Flutter development environment.
This comprehensive guide explains what Flutter plugins are, why they are essential, the MethodChannel communication model, step‑by‑step plugin creation, common pitfalls, testing strategies, publishing to public or private repositories, and a real‑world case study of a routing plugin, providing all the code and configuration details developers need to build and distribute their own Flutter plugins.
This article details the background, challenges, and step‑by‑step solution for standardizing UI across Youzan Retail’s iOS and Android apps, covering designer and developer perspectives, the creation of a shared style library, component architecture, resource management, delivery outcomes, pitfalls, and future automation plans.
This article explains how to perform ordered UI traversal of an Android application with UIAutomator on the 360 Open Testing platform, covering required parameters, a seven‑step implementation process, UI change listening via AccessibilityService, element dumping, sorting, comparison methods, interaction automation, and termination conditions.
Xianyu integrated accessibility directly into its Flutter‑Native hybrid app, establishing a systematic workflow—from design to monitoring—that makes all interactive elements focusable, described, and properly ordered, enabling over 40 000 visually impaired users to navigate the marketplace with an 87.5% issue‑fix rate.
This article provides an in‑depth examination of Android's ClassLoader architecture, explaining how BaseDexClassLoader.findClass() and ClassLoader.loadClass() locate and load classes, with step‑by‑step source code analysis of loadClass, findLoadedClass, findClass, DexPathList, DexFile, and native class definition processes.
This article explains the concept and practical application of the Annotation Processing Tool (APT) in Android development, demonstrating how to set up an APT project, define annotations, process them with custom processors, and automatically generate Java code for activity navigation using JavaPoet.
The article details how the Youzan Mobile Assistant adds a local packet‑capture module that leverages Android VpnService/iOS NetworkExtension and tun2socks to route traffic through a SOCKS5 proxy, then uses Socket.IO to push request and response data in real time to the app’s UI while keeping the app alive in the background.
Recent reports reveal that many Android apps secretly collect location and identifier data despite denied permissions, a zero‑day Zoom flaw lets any website hijack Mac cameras, and Didi adjusts its pricing, while a man released after splashing water on Baidu's CEO highlights broader tech‑related news.
The article explains how analyzing Java bytecode with tools such as Javassist during the Android Gradle transform phase yields precise, method‑level module dependency data—overcoming the limitations of Gradle trees, import scans, and IDE analysis—and provides a reliable way to map and enforce clean dependency structures in large Android codebases.
Android activity startup latency stems from three phases—Pause, Launch, and Render—so optimizing only onCreate often leaves perceived delays; developers can measure each phase via system logs or AOP hooks (Instrumentation, Looper‑Printer, or ActivityThread handler) to pinpoint and reduce bottlenecks.
Qigsaw, iQIYI’s open‑source framework released in 2019, enables low‑risk dynamic loading of Android App Bundle split APKs across all components and processes, offering Play‑Core‑compatible APIs, single‑hook stability, resource merging, and Tinker‑based hot updates, thereby simplifying plugin integration and reducing app size.
This article describes how Ctrip's hotel query home page evolved through three architectural versions—1.0, 2.0, and 3.0—detailing the motivations, design choices, performance considerations, and the final unified module‑based structure that leverages VLayout for improved scalability and maintainability.
This article recounts the evolution of the Class Optimization Master Android project—from a dual‑end, no‑design prototype to an MVP‑based implementation and finally a modularized architecture—highlighting pain points, solutions, and practical steps for improving code boundaries, build times, and reusable modules.
This guide explains how to locate the Android SDK path in Jenkins, list available SDK components, upgrade a specific version of the tools and build‑tools, and verify the update so that Jenkins can successfully build Android APK packages after a toolchain upgrade.
This article introduces the WAPM performance monitoring SDK for Android, detailing its four‑layer architecture, memory‑leak detection via LeakCanary, UI thread jank analysis using Looper callbacks, network request monitoring through framework hooks, and page load timing via activity and view lifecycle instrumentation.
xCrash is an open‑source Android SDK that reliably captures both Java and native crashes across Android 4.0‑9.0 and multiple CPU architectures by using async‑signal‑safe handlers, a dedicated dumper process, and pre‑allocated resources to generate tombstone‑style dump files without root, offering richer diagnostics than BreakPad and extensible future features.
This article examines the Android shared library (SO) loading mechanism, identifies security vulnerabilities, and presents a method of packing the SO to hinder reverse engineering, detailing each loading step, challenges across Android versions, and before‑after protection results.
This article explains why Retrofit + Gson parsing can fail when server‑sent fields differ from client definitions or when lists contain heterogeneous item types, and demonstrates how to customize TypeAdapters and use @JsonAdapter to gracefully handle these scenarios in Android applications.
This article explains the evolution and advantages of video SDKs, details the core playback pipeline—including decoding, rendering, and audio‑video synchronization—covers cross‑platform implementation on Android, iOS and PC, and shares practical testing experiences and performance‑optimization techniques.
By instrumenting every C++ function with GCC’s ‑finstrument‑functions and recording call addresses in per‑thread TLS, the team built a fast, lock‑free stack‑trace mechanism that outperforms libunwind by up to 60×, integrates with Android’s malloc_debug, and powers an automated native‑memory‑leak detection framework with web‑based analysis.
The article details the background, design goals, layered architecture, message flow, UI customization mechanisms, and key class structures of the 58 Group's cross‑platform IM SDK, illustrating how it supports iOS, Android, Web, and H5 with extensible C++ and UIKit components.
This article describes the limitations of existing Android screen‑casting tools, analyzes the H264 profile issue on devices like Xiaomi 9, and details how the scrcpy source code was altered to output baseline H264 streams, enabling reliable real‑time casting via the Broadway web plugin.
This article provides a comprehensive overview of RxJava2 for Android, covering its observer types, backpressure strategies, thread‑scheduling transformers, the compose() operator, differences between compose and flatMap, and the distinction between hot and cold observables with practical code examples.
Litho is a Facebook‑originated declarative framework for building high‑performance Android UI, replacing XML layouts with component‑based code, leveraging Yoga for async layout, flattening view hierarchies, and offering fine‑grained reuse to dramatically improve RecyclerView scrolling speed and memory consumption.
The article explains how resource obfuscation with andResGuard removes META‑INF service files needed for the Android Main dispatcher, causing coroutines to silently fail after withContext calls, and shows that preserving the META‑INF/services directory restores proper coroutine execution.
This article provides a comprehensive guide to using AspectJ for aspect‑oriented programming in Android, covering core concepts such as aspects, join points, pointcuts and advice, demonstrating matching expressions, custom annotations, and detailing step‑by‑step integration with Gradle plugins and plugin implementation for seamless code weaving.
This article explains common H5‑to‑native app interaction patterns, detailing basic interfaces, one‑way and two‑way calls, implementation approaches, and the considerations for whether the H5 or the native side leads the integration, with code examples for Android and iOS.
The article examines Google's suspension of Huawei support, explains why Android uses the Apache License instead of GPL, outlines common open‑source licenses, discusses licensing implications for Node.js and mobile ecosystems, and highlights recent licensing controversies affecting developers.
Version 1.3.30 of Kotlin introduces Apple support, stable coroutines, KAPT incremental annotation processing, unsigned array extensions, Kotlin/Native platform expansions, and IDE improvements across IntelliJ, CLion, and AppCode, while also detailing configuration steps and performance optimizations for Android developers.
The article introduces Aspect‑Oriented Programming, explains its core concepts and compile‑time versus runtime models, and demonstrates how Android developers can employ compile‑time AOP (using AspectJ) to implement method‑level hot‑fixes, performance monitoring, logging, and other cross‑cutting features while weighing benefits, overhead, and optimization strategies.
This article explains how the Android Monkey tool can be used to perform automated stress testing on fragmented Android devices, covering its purpose, installation locations, key command‑line parameters, a complete example command, and practical steps for integrating Monkey into a mobile testing workflow.
