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51CTO HarmonyOS Developer Community
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51CTO HarmonyOS Developer Community

The HarmonyOS Developer Community is a learning-oriented community for developers to learn, communicate, ask questions, and share.

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Recent Articles

Latest from 51CTO HarmonyOS Developer Community

47 recent articles
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Sep 4, 2026 · Mobile Development

HarmonyOS arktoolbox compact: Remove Falsy Array Values in One Line

This article introduces the compact utility from the arktoolbox library for HarmonyOS, which removes falsy values (null, undefined, 0, false, empty string, NaN) from arrays, explains its implementation, compares it with filter(Boolean), highlights edge cases like 0 being valid data, and demonstrates practical usage in forms, API aggregation, and caching.

ArkTSHarmonyOSMobile Development
0 likes · 16 min read
HarmonyOS arktoolbox compact: Remove Falsy Array Values in One Line
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Sep 2, 2026 · Mobile Development

HarmonyOS 7.x: Build iOS-Style Rubber Band Bounce for Lists (System vs Custom Physics)

This article details two approaches to implement edge bounce effects in HarmonyOS 7.x Lists: using the built-in edgeEffect.Spring API for quick integration, and a custom physics-based animation with damping formula and spring curve tuning for deep customization, including parameter recommendations, bottom bounce implementation, performance comparison, and five common pitfalls with solutions.

HarmonyOSListPull-to-Refresh
0 likes · 18 min read
HarmonyOS 7.x: Build iOS-Style Rubber Band Bounce for Lists (System vs Custom Physics)
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 31, 2026 · Frontend Development

HarmonyOS 7 Floating Tabs: Window-Width-Driven Layouts for Foldables & Tablets

This article demonstrates how to build responsive HarmonyOS 7 floating tab layouts that adapt to foldable phones, tablets, and split-screen windows by reading actual container width via ContainerReader, using breakpoints at 440/600/840 vp to switch column counts, preserving business state during layout changes, and avoiding device-type branching.

ArkTSContainerReaderHarmonyOS 7
0 likes · 26 min read
HarmonyOS 7 Floating Tabs: Window-Width-Driven Layouts for Foldables & Tablets
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 28, 2026 · Mobile Development

HarmonyOS Cold Start Optimization: 4-Step Pipeline from Icon Tap to Interactive

This article details a four-step HarmonyOS cold start optimization methodology: baseline measurement, deferred non-critical parsing, taskpool concurrency for heavy parsing, and skeleton screens with in-process caching to decouple first-frame and interactive metrics, validated via dual-track measurement on a sample 'Morning Brief' page.

ArkUIHarmonyOScaching
0 likes · 36 min read
HarmonyOS Cold Start Optimization: 4-Step Pipeline from Icon Tap to Interactive
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 26, 2026 · Mobile Development

Building a Complete HarmonyOS News Client: Network Requests, Pull-to-Refresh & Load More Implementation

This tutorial walks through building a full-featured HarmonyOS news module with category tabs, list rendering, custom pull-to-refresh and load-more logic using touch events and offset animations, network request encapsulation with Promise-based error handling, and a layered architecture separating view, viewmodel, and common utilities.

ArkTSHarmonyOSList Component
0 likes · 33 min read
Building a Complete HarmonyOS News Client: Network Requests, Pull-to-Refresh & Load More Implementation
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 19, 2026 · Mobile Development

Dissecting HarmonyOS 7 Core Vision Kit Image Super-Resolution API: Full Data Flow Guide

This tutorial details the complete data flow for HarmonyOS 7's Core Vision Kit Image Super-Resolution API, covering prerequisites, module imports, PixelMap decoding, ImageData wrapping, Request construction, Analyzer lifecycle, concurrency limits, error handling, and a full implementation example.

API IntegrationCore Vision KitHarmonyOS 7
0 likes · 17 min read
Dissecting HarmonyOS 7 Core Vision Kit Image Super-Resolution API: Full Data Flow Guide
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 17, 2026 · Mobile Development

HarmonyOS On-Device AI Super-Resolution: Send Small Images, Get HD Results Offline

This guide details HarmonyOS 7's Core Vision Kit ImageSR API for on-device 4x AI super-resolution, covering API usage, ArkTS demo code, permissions, constraints (2048x2048 input, RGBA_8888 format), common pitfalls (emulator unsupported, model download, resource leaks), and suitable use cases like e-commerce and social images where perceptual quality matters more than pixel-perfect accuracy.

API 26ArkTSCore Vision Kit
0 likes · 21 min read
HarmonyOS On-Device AI Super-Resolution: Send Small Images, Get HD Results Offline
51CTO HarmonyOS Developer Community
51CTO HarmonyOS Developer Community
Aug 14, 2026 · Mobile Development

HarmonyOS End-Cloud Integration: Migrating a Standalone App to Cloud-Enabled Architecture

This tutorial walks through upgrading a HarmonyOS health app from local-only storage to an end-cloud integrated architecture using AppGallery Connect, covering architecture design, data synchronization strategies, CloudDB modeling, SDK initialization, and development environment setup with DevEco Studio and Node.js cloud functions.

AppGallery ConnectArkTSCloudDB
0 likes · 14 min read
HarmonyOS End-Cloud Integration: Migrating a Standalone App to Cloud-Enabled Architecture