This article examines how enabling system-wide large‑font mode on Android and iOS can distort Webview layouts for driver‑focused apps, presents data on user font‑size usage, compares approaches from other apps, and offers practical CSS and code solutions to reliably disable or adapt to large fonts.
This article explains DingTalk's systematic approach to diagnosing and reducing excessive battery consumption on Android, covering background issues, challenges, monitoring techniques, component-level power tracking, abnormal power detection, health scoring, and practical optimizations such as low‑power mode and governance strategies.
The article explains Android’s multi‑layered file‑based encryption system, describing how FDE, FBE and metadata encryption work together, and detailing the end‑to‑end key‑management flow that spans the HAL, VOLD, Linux kernel, fscrypt, the Trusted Execution Environment and hardware crypto engines to generate, derive, and program per‑file encryption keys.
This article describes the background of Android code execution, the evolution from full AOT to JIT+AOT and Cloud Profiles, the limitations of Google Baseline Profiles, and presents a custom Gradle‑based solution that generates baseline.prof files for all AGP versions, integrates with the installation pipeline, collaborates with OEMs, and demonstrates measurable cold‑start improvements.
This article provides a detailed technical analysis of an Android step‑counter simulator app that leverages the Xposed framework to hook system sensor APIs, modify step data, and achieve user‑defined step targets, while also explaining relevant sensor fundamentals and required permissions.
This article shares a senior engineer’s journey from internships to three years at Taobao, offering practical advice on writing readable, high‑performance Android code, mastering design principles, handling performance metrics, and maintaining a growth mindset while contributing to a mobile‑focused tech team.
This article explains the design and implementation of a dynamic resource management system for Android apps, covering the motivation for reducing APK size, the architecture of the dynamicresbase, dynamicrescore, and dynamicresplugin modules, resource loading and application processes, Gradle plugin tasks, code transformation, and practical tips for handling .so libraries.
A veteran Android developer named David quit after Google permanently banned his AdMob and AdSense accounts for placing a bottom navigation bar too close to banner ads, prompting him to open‑source his three apps and offer recommendations to improve Google’s ad‑policy enforcement for developers.
This article describes the background, research, design, and implementation of a backend system that automates Android channel package updates, enabling batch submission, reducing manual effort, and streamlining continuous delivery across multiple app markets.
This guide compiles 61 practical ADB commands covering device connection, app management, debugging tools, file transfer, input simulation, device control, and advanced operations, providing Android developers with a comprehensive cheat‑sheet for efficient testing and troubleshooting.
The article demonstrates a systematic approach to speeding up large Android Gradle builds by inspecting logs, stack traces, debugging plugins, profiling task execution with a custom plugin, and applying on‑demand configuration, caching, incremental and parallel compilation settings, which together cut build time by roughly 40 %.
OpenAI has released a free iOS ChatGPT app with Whisper‑powered voice input and syncable chat history, promises an Android version in the coming weeks, and highlights speed improvements, privacy features, and its impact on third‑party alternatives.
The article explains how Meituan migrated its method‑instrumentation hot‑fix system Robust from ProGuard to Google’s R8 by moving change detection ahead of optimization, disabling or tuning R8’s built‑in optimizations, and implementing special handling for anonymous classes, inlined methods, super calls, constructors and static initializers to ensure reliable patch generation.
By dissecting OkHttp’s source, the article explains its layered architecture, the interceptor‑chain implementation of the Chain‑of‑Responsibility pattern, and shows how developers can add custom interceptors—such as authentication headers—to uniformly handle requests, retries, caching, and network I/O in Java and Android.
The article details a cross‑platform solution for embedding the King of Glory map into Unity, describing a native Android view integration, a three‑layer UI framework with JCE definitions, data‑driven method calls and callbacks, coordinate scaling, immersive mode handling, and Nine‑Patch rendering to achieve rapid, lightweight map deployment.
The article outlines frequent memory‑leak pitfalls in Android (such as anonymous inner classes, static singletons, unregistered listeners, unclosed streams, and lingering animations) and iOS (including block retain cycles, strong delegate references, NSTimer retention, unmanaged CoreFoundation objects, and dispatch_after), and provides concrete code‑level remedies to prevent out‑of‑memory crashes.
The article explains Android’s emerging eBPF support, detailing how to write, compile, load, attach, and debug BPF programs—including map handling, permission controls, perf‑event reporting, and practical debugging steps—while highlighting its current preliminary status and vast potential for kernel‑level monitoring on mobile devices.
This article explains how to improve Android local‑search latency by embedding JavaScriptCore via JNI, detailing the performance bottlenecks, the integration workflow, essential JSC APIs, JNI usage patterns, and concrete C++/Java code examples that cut processing time by roughly half.
Android reverse engineering involves extracting an APK, decompiling it with tools like apktool, dex2jar, or JADX, analyzing and modifying Smali or Java code, recompiling and signing the package with jarsigner, and testing the changes, while using adb commands to retrieve the original file and emphasizing deeper analysis for robust security.
This article examines how the Android setResult API can be abused to expose personal data, detailing three real-world attack scenarios—ID theft, private file read/write, and phone number leakage—and provides concrete mitigation strategies for developers.
The article traces the evolution of Taobao’s unified mobile network library AWCN, detailing its MobileSDN architecture across north‑bound and south‑bound layers, key techniques such as IP‑list scheduling, adaptive protocol selection, multi‑path request handling and vendor acceleration, the challenges faced, performance gains observed during high‑traffic events, and future plans for finer network sensing and intelligent scheduling.
This article explains Kotlin's lazy initialization feature, describes its common usage patterns, dives into the internal source‑code implementations (Synchronized, Publication, and None), discusses thread‑safety concepts such as volatile and CAS, and provides practical recommendations for Android developers.
This article describes how Ctrip's Train Ticket Android project reduced its clean Gradle build time by more than half using a module‑AAR approach, custom dependency substitution, Maven publishing, and automated tooling, while detailing the challenges, code changes, and performance results.
This article introduces a live‑whiteboard demo built with OpenGL ES for iOS and Android, explains the implementation of multi‑channel rendering and multi‑texture approaches, compares their performance and flexibility, and provides complete GLSL and OpenGL code snippets for developers.
Android method tracing, a Google‑provided Java‑level profiling tool, captures function‑level execution times via sampling or explicit enter/exit hooks, outlines its startup flow and collection categories, and describes recent Android advances such as JIT‑generated hooks and instrument‑based replacement of trace‑odex support.
This article provides a comprehensive guide to Kotlin Multiplatform Mobile (KMM), covering its concepts, advantages over other cross‑platform frameworks, detailed setup steps, project structure, Gradle configuration, code examples for shared and platform‑specific modules, and an in‑depth explanation of the Android and iOS compilation pipelines.
Google has launched Android 14 Beta 1 for general users, allowing Pixel devices to upgrade while warning of potential installation errors, and introduces a series of incremental improvements such as enhanced PIN privacy, a transparent navigation bar, restored volume controls, BLE audio settings, and updated photo/video permissions.
This guide explains how to improve development efficiency by selecting appropriate cross‑platform technologies such as Uni‑app, Taro, or Kbone combined with JSBridge, outlines suitable scenarios, compares Android and iOS WebView kernels, and provides practical code examples for implementing bidirectional communication.
This article describes the security upgrade of the 58 Daojia work‑side Android application, covering code and resource obfuscation, signature protection, emulator and root detection, anti‑hook measures, and advanced Dex‑shell and DEX‑VMP techniques, with practical Gradle and Kotlin examples.
This article explains Android app security risks and introduces static taint analysis, its theoretical foundations, key concepts, and practical tools such as FlowDroid, MobSF, AppShark, and PATDroid for detecting privacy leaks and vulnerabilities.
This article introduces HorStickyNavLayout, a custom Android ViewGroup that enhances RecyclerView horizontal scrolling with a sticky footer prompting users to discover more content, detailing its architecture, nested scrolling handling, fling behavior, and animation logic to improve interaction without extra item views.
The article investigates a real‑world Android navigation bug by dissecting how FLAG_ACTIVITY_NEW_TASK interacts with launch modes, task affinities and intent construction, revealing that the flag does not always behave like singleTask, that START_DELIVERED_TO_TOP may fail to deliver new intents, and offering debugging steps and practical fixes.
This article examines the evolution stages of a plugin framework, analyzes performance bottlenecks such as Multidex, Dex2Oat, and class loading on Android devices, and presents detailed optimization strategies—including timing adjustments, forced compilation commands, and native class‑loader hook replacements—to improve app responsiveness and reduce ANR occurrences.
This article provides an in‑depth analysis of Android’s Activity launch mechanism, tracing the client‑side startActivity call through the framework layers, system_server services, AIDL interfaces, transaction handling, and the execution of lifecycle callbacks such as onCreate, onStart, and onResume, with extensive code excerpts.
This article details Huolala's evolution from a simple wireless ADB setup to the sophisticated TianGong system, covering architecture, video streaming, input handling, large‑scale device pool management, and future plans for intelligent scheduling and iOS optimization.
WeChat’s Android accessibility framework abstracts common perceivable, operable, and understandable requirements into reusable rules, automatically enlarges touch targets, generates unified content descriptions, and includes a walk‑through verification service, enabling developers to efficiently implement scalable accessibility features for millions of visually or hearing‑impaired users.
The article recounts real-world examples of hidden backdoors in software—from an Android ROM project and Ken Thompson’s compiler-level exploit—to discuss their legal ambiguity in China, highlight the challenges of detection, and conclude with a call for developers to share their own experiences, alongside a promotional Python course.
This article explains the principles of memory leaks, details the zero‑overhead libmemunreachable detector, walks through its core algorithms and code, and describes the modifications Taobao made to enable reliable leak detection in Android release builds.
This article describes a comprehensive crash governance framework for a fast‑growing mobile app, covering monitoring, root‑cause attribution, systematic remediation steps, and detailed case studies—including MIUI system bugs, 32‑bit address‑space limits, memory corruption, and WebView crashes—while outlining future challenges and automation strategies.
This article examines the growing trend of foldable Android screens, outlines the challenges JD mini‑programs face when adapting to such devices, and presents practical solutions including resizable activities, aspect‑ratio handling, configuration‑change management, rpx units, and engine‑level fixes to ensure seamless user experience across inner and outer screens.
Facing rapid growth of its Android app size beyond 117 MB, JD Finance implemented a comprehensive APK slimming project in 2022, analyzing APK components, SDKs, and ZIP structure, then applying image optimization, R‑file inlining, resource obfuscation, dynamic SO loading, and build‑time configurations to reduce the package to 74 MB and improve download conversion rates.
The article examines Android's DropBoxManagerService architecture, its configurable file retention policies, naming conventions, atomic operations, and broadcast mechanisms, then applies these patterns to propose a client‑side log management system using a producer‑consumer model with prioritized temporary storage, rename‑based reporting, and FileObserver‑driven collection respecting network, data, timing, priority, and battery constraints.
This article presents a detailed technical analysis of adapting the Youku video player for foldable-screen devices, covering background trends, dual-mode UI designs, the OnePlayer plugin framework, configuration strategies, layout adjustments, testing methods, and future enhancement ideas.
This article analyzes Android layout rendering performance issues and presents optimization strategies including AsyncLayoutInflater, X2C framework, and custom view factory approaches to reduce rendering time by 20-35%.
This article examines why a single Thread.currentThread().getStackTrace() call is insufficient for modern Android performance debugging, compares instrumentation and native stack‑capture approaches, and provides detailed step‑by‑step implementations, code snippets, and optimization tips for reliable stack tracing.
This article explains how Android's JVMTI (ART Tooling Interface) works, details its monitoring capabilities, shows how to overcome debug‑only restrictions by modifying JDWP and Runtime flags, and describes the TBProfiler tool that leverages JVMTI for method, thread, exception, lock, and memory profiling in production apps.
This article explains how WeChat Android moved from Proguard to R8, detailing the performance and size gains, the new build workflow, the numerous optimization pitfalls encountered, and the concrete fixes applied to ensure stable releases and smaller Tinker patches.
This article explains the challenges and solutions for adapting Android applications and JD mini‑programs to foldable screens, covering activity resizable settings, aspect‑ratio handling, configuration change management, multi‑window considerations, and specific strategies for ensuring seamless user experience across inner and outer displays.
This article provides a comprehensive overview of Android image compression, covering bitmap fundamentals, ARGB color model, size calculations, quality and dimension compression methods, the Luban algorithm, its implementation details, performance considerations, and related JPEG Huffman coding techniques.
This article explains how Android transforms raw touch signals from the hardware into MotionEvent objects, routes them through the InputManagerService, InputReader, and InputDispatcher, and finally delivers them to the appropriate View or ViewGroup, detailing the roles of sockets, InputChannel, and the event‑dispatch chain.
This article explains how Android developers can use the new Jetpack CameraViewfinder component to implement reliable, resizable camera previews across diverse device form factors—including foldables and multi‑window modes—by adding the library, configuring layout XML, and handling surface requests with concise Kotlin code examples.
The article explains how dynamically loaded dex files are optimized on Android 5.0 through 12—detailing AOT compilation via dex2oat, profile‑guided filters, runtime‑filter flags, class‑loader contexts, SELinux limits, and the use of PathClassLoader or the PMS performDexOptSecondary command to achieve performance comparable to installed APKs.
This article explains how the ANRCanary tool helps DingTalk developers identify and resolve various Android ANR scenarios—ranging from main‑thread tasks and synchronization blocks to message‑queue congestion, emoji handling, and cross‑process SharedPreferences—while sharing practical best‑practice guidelines for building reliable mobile performance tools.
GaiaX’s cross‑platform expression module uses a C++ LR(1) parser with lexical, syntax and semantic analysis to bind data, support arithmetic and functions, unify values via GXValue, bridge iOS and Android through JNI, and achieves sub‑millisecond execution for simple and nested expressions.
The article explains how to monitor, locate, and remediate Android ANRs by installing a LooperPrinter‑based timeout detector, extending coverage to IdleHandler and touch events, dumping and aggregating main‑thread stacks via Firebase Crashlytics, and showcases real‑world fixes that cut online ANRs by 73.8%.
The article walks through Android’s display pipeline—from an app’s frame rendering through SurfaceFlinger, the Hardware Composer, and final screen output—showing how each stage appears in systrace and giving readers a macro‑level view of the data flow in Android S’s graphics system.
The ModularDevTool, a shell‑script and Gradle‑plugin solution, centralizes sub‑repository management, enables one‑click switching between code and Maven dependencies, automates version handling and CI publishing, and thus streamlines Android client modular development while cutting manual effort and code conflicts by over half.
The NetEase Cloud Music Android team built a comprehensive memory‑monitoring system—combining LeakCanary and KOOM for leak detection, instrumented image loading for large‑bitmap tracking, periodic heap and thread metrics collection, and automated ticket generation—to identify, rank, and resolve leaks, oversized resources, and thread‑related OOM risks across development and production.
This article details how an Android team unified multiple network libraries into OkHttp, integrated HttpDns to bypass carrier DNS hijacking, migrated to HTTPS and HTTP/2, and applied a series of performance and security optimizations that markedly improved request speed, reliability, and user experience across diverse mobile network conditions.
This article shares practical techniques for adapting Android apps to overseas markets, covering modular code design, compliance checks, AAB bundle creation, Google Play signing, manifest adjustments, and automated multi‑language workflows to streamline global publishing.
This article explains GaiaX’s cross‑platform expression engine, covering its design, LR(1) grammar‑based parsing, syntax‑tree construction, C++ core implementation, Android JNI and iOS bridge integration, unified data types, performance benchmarks, and how it ensures consistent, high‑performance UI rendering on mobile devices.
This article explains how Android installs APKs, introduces the concepts of plugins and pluginization, details class‑loader and resource‑injection mechanisms, describes four‑component communication strategies, compares several hooking techniques, and reviews major open‑source plugin frameworks such as Atlas, RePlugin, VirtualApp and Shadow.
This article walks through the nowinandroid Android sample project's build scripts, covering Gradle property configurations, automatic Git‑hook installation, includeBuild usage, reusable build‑logic plugins, Version Catalog dependency management, Spotless code‑style checks, and custom Lint rules to improve build performance and code quality.
The article explains Google’s Context Hub Runtime Environment (CHRE) architecture, detailing how apps use ContextHubManager to communicate via socket and FastRPC with the HAL, which controls Nanoapps that run on low‑power processors, and outlines the code structure and Nanoapp development workflow.
This comprehensive article explains what Android ANR (Application Not Responding) is, details its various causes and trigger scenarios, walks through the internal service‑side workflow, and presents practical monitoring solutions—including a watchdog thread and SIGQUIT signal interception—along with code samples, trace analysis methods, and mitigation strategies for developers.
This article explains the fundamentals of SSL certificates, details Android’s certificate verification process, walks through common pitfalls such as expired or mismatched certificates, and provides practical solutions—including custom TrustManager implementations, revocation checks, and debugging techniques—to ensure reliable secure communication in Android apps.
The article explains Diffie‑Hellman key agreement, detailing its 1976 origin, mathematical derivation, example walkthrough, and provides complete Java server and Android client code illustrating how two parties securely generate a shared secret over an insecure channel without transmitting the key.
This article presents a comprehensive approach to building an Android code impact analysis tool that leverages Git diff to locate modified lines, employs ASM-based class and method visitors to construct upward and downward call chains, extracts Javadoc and custom tags, and visualizes the results for developers and testers.
This article explores the challenges of end‑to‑end tracing on mobile apps, explains why issues are hard to reproduce, and presents a four‑step solution using a unified OpenTelemetry standard, automated data linking, performance optimizations, and machine‑learning‑driven root‑cause analysis.
The article shares a developer’s journey from Android app development to framework development, detailing motivations, environment setup, daily tasks, challenges, essential skills, and a structured learning roadmap for mastering Android’s system layers.
This article introduces the fundamentals of the Base64 encoding algorithm, explains its role in reverse‑engineering and security scenarios, details the encoding and decoding processes, and provides complete Java and native C++ implementations with code examples for Android development.
This article explains Android's Alarm mechanism, covering its overall architecture, the four alarm types, framework and kernel workflows, batch alignment, wake‑up handling, suspend processing, and a real‑world power‑debugging case to help developers optimize battery consumption.
This article explains the Android boot sequence from the boot ROM to the SystemServer, shows how to analyze boot time using logs, bootchart and boottrace, and provides practical optimization steps to reduce the startup delay, especially focusing on the Zygote and AudioService bottlenecks.
This article explains how to implement Android plugin-based skinning by defining a skinning interface, customizing LayoutInflater.Factory2, loading external skin resources, and analyzing the Android‑skin‑support library’s code, providing a clear step‑by‑step guide for mobile developers.
This article explains how ANRCanary attributes Android ANR problems by analyzing thread deadlocks, barrier message leaks, aggregation signatures, and key‑function extraction, providing developers with concrete detection algorithms and practical examples to resolve high‑impact ANRs.
This article details JD's Android app package‑size reduction journey, covering component analysis with APK Analyzer and zipinfo, dependency mapping via Gradle, a suite of slimming measures such as plugin‑to‑download, resource compression, R8, 7‑zip, and a systematic governance framework that ties component growth to enforceable size‑control policies, ultimately achieving over 30% reduction in APK size.
The article explains Android’s power management architecture, detailing kernel power states, CPU and device idle modes, the multi‑layer framework, WakeLock types and flags, and the early‑suspend/late‑resume mechanisms, while providing commands and examples for monitoring and controlling device sleep behavior.
This article explains how to create a custom layout in Jetpack Compose that dynamically arranges a grid of fixed‑size room items, centers the content horizontally and vertically when needed, and adds vertical scrolling for overflow, while detailing the measurement and placement logic with full Kotlin code examples.
This article explains Android's client/server architecture, detailing how public manager APIs act as client stubs, how system services are implemented and registered using AIDL, ServiceManager, and SystemService, and discusses hidden APIs, boot phases, and the modular APEX system for updates.
In the second part of Baidu’s APK‑size‑optimization series, the team uses the Titan‑Dex framework to strip unnecessary build‑type and system Dex annotations—such as generic signatures and class‑relationship metadata—while automatically generating a whitelist via custom Lint detectors, ultimately shrinking the final Dex by about 1.2 MB.
This tutorial explains how to build an Android custom view that lets a large circle be dragged, scales a smaller circle based on distance, snaps back with a bounce animation when released inside a boundary, or plays an explosion sequence when released outside, using Kotlin, Bézier curves, and WindowManager integration.
This article introduces DingTalk’s self‑built ANRCanary, explains the complete Android ANR lifecycle, details how it captures and aggregates main‑thread tasks, filters false positives, and provides concrete code‑level insights to help mobile developers pinpoint and resolve ANR issues efficiently.
The article explains Gradle's dependency‑graph symbols—arrow (→) for version conflicts, (c) for constraint‑driven versions, (*) for omitted subtrees, and markers for strict or forced versions—showing how to read the output, identify conflicts, and apply proper resolution strategies.
Bilibili's cloud‑based Android build system leverages high‑performance remote servers, Dockerized build images, Git diff synchronization, and distributed compilation of heavy tasks like DexBuild to dramatically accelerate builds for its massive monorepo, providing parallelism and VIP priority while incurring a learning curve and added maintenance costs.
This article details Baidu's systematic approach to reducing Android APK size by analyzing Dex annotation types, defining removal targets, implementing a Titan‑Dex based optimizer, and automating detection and whitelist management with custom Lint rules, ultimately saving about 1.2 MB of Dex bytecode.
The article explains why reporting item exposure in onBindViewHolder is inaccurate, reviews existing scroll‑listener based solutions and their limitations, and then presents a layout‑manager‑independent Kotlin extension that reliably detects RecyclerView item visibility based on visible area percentage, also covering ViewPager2 page visibility handling.
The team created Layout2Code, an APT‑based generator that translates XML layouts into Kotlin code at build time—handling merge and include tags and supporting custom Views—cutting homepage layout inflation by over 200 ms, boosting performance metrics while requiring far less maintenance than traditional X2C solutions.
Google’s shift to Rust for Android development has dramatically cut memory‑safety bugs, dropping from 223 incidents in 2019 to 85 in 2022, and reducing the share of such vulnerabilities from 76% to 35%, highlighting Rust’s growing role in mobile security.
This article explains how Alipay measures and improves Android cold‑start performance through video‑frame analysis, ActivityTaskManager, custom instrumentation, home‑page snapshot techniques, temperature control, patch‑APK data collection, AOP‑based diagnostics, and an integrated APM platform.
This article explains why a routing framework is essential for Android apps, analyzes TheRouter's source code, and shows how it uses annotation processing and ASM bytecode injection to handle page navigation, parameter injection, and cross‑module method calls in a modular architecture.
Join the Infra Talk session where PhD researcher Xiaoyu Sun reveals how Android security and compatibility defects arise, demonstrates static and dynamic analysis techniques, and showcases open‑source tools for detecting privacy leaks and framework incompatibilities, while outlining future research directions.
This article walks through building an Android AccessibilityService‑based tool that automatically detects WeChat contacts who have deleted or blocked you by using a fake‑transfer method, handling UI events, launching WeChat, and employing Kotlin code snippets for node navigation and gesture simulation.
This article explains the low‑level Android Jetpack Compose Animatable API, its constructor parameters, how to create and configure Animatable instances for various value types, and demonstrates using animateTo and snapTo within coroutines, including listeners and a complete upload‑button use case.
This article explains the concept of Easing in Android Compose, shows how to use built‑in Easing functions, lists the available Easing types, and demonstrates how to create custom Easing implementations with Kotlin code examples and visual demos.
This article introduces Android's AccessibilityService, explains its fundamentals, shows how to create, register, and configure the service, demonstrates common techniques such as node searching and interaction, and provides a complete Kotlin example that automatically logs into WeChat on Windows/Mac.
This article explains the differences between Java's Annotation Processing Tool (apt), Kotlin's annotation processor (kapt), and the newer Kotlin Symbol Processing (ksp) framework, illustrating their architectures, usage patterns, and code‑generation capabilities with practical examples for Android development.
This article details NetEase Yanxuan's Android team transition to a component‑based architecture, identifies inherent problems such as version control, quality assurance, semantic versioning and binary compatibility, and presents the YAC engineering solution—including standardized processes, Gradle plugins, CI/CD pipelines, and tooling—to streamline component development and improve productivity.
From 2010 to 2022 the Linux kernel moved from reactive, out‑of‑tree hardening to a proactive KSPP‑driven era, integrating probabilistic and deterministic mitigations, hardware‑backed defenses, and compiler‑level checks, while Android’s adoption and emerging Rust‑based components accelerated mainstream security hardening.
This article explains why the Kotlin Android Extensions plugin is deprecated, outlines migration strategies for legacy code, introduces the open‑source Kace framework as a seamless replacement, and provides detailed setup, code generation, performance optimizations, and incremental compilation techniques for Android projects.
This article explains how managing complexity by layering responsibilities and introducing an MVP architecture separates UI rendering from business logic in Android search features, illustrating the problems of high coupling and low cohesion with concrete Kotlin code examples and discussing AB testing and decorator patterns.
