HarmonyOS Learning: Developer Classroom
xhunmon

xhunmon @xhunmon

About: HarmonyOS NEXT Developer

Joined:
May 23, 2025

HarmonyOS Learning: Developer Classroom

Publish Date: Jun 18
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Introduction

Developer Classroom is a systematic learning platform created by Huawei for HarmonyOS developers, integrating diverse learning resources such as video courses, live session replays, and documentation tutorials. Whether you are a beginner or an advanced developer, you can acquire authoritative and cutting-edge technical knowledge through Developer Classroom to rapidly enhance your HarmonyOS application development capabilities.

Official Resources

  • Huawei Developer Classroom official portal:

  • Specialized video courses:

Platform courses cover everything from foundational introductions to advanced practical applications, including technical principles, development tools, and scenario-based practices.

Detailed Explanation

Core Features of Developer Classroom

  1. Authority: Courses are recorded by Huawei's official technical team and certified experts, with content synchronized to the latest HarmonyOS versions.
  2. Systematic Structure: Courses are designed with a three-tier framework ("Technical Domain - Capability Level - Learning Path") to form a complete knowledge system.
  3. Practical Focus: Most courses include hands-on labs with supporting code projects and environment configuration guides.
  4. Interactivity: Supports Q&A in course comments, with some live sessions offering real-time troubleshooting and code reviews.
  5. Diverse Formats: Includes short videos (5-15 min), series courses (30-60 min/session), and live replays (2-3 hours).

Course Categories

  1. Foundational Series

    • "HarmonyOS Development Quick Start": Covers environment setup, project creation, and basic component usage.
    • "Deep Dive into ArkUI Declarative Development": Core concepts for transitioning from imperative to declarative development.
    • "Essential DevEco Studio Techniques": Practical IDE shortcuts, debugging tools, and performance analysis.
  2. Core Technology Series

    • "State Management Toolkit": Principles and best practices for decorators like @State/@Prop/@Link.
    • "Distributed Capability Development": Cross-device communication, data sharing, and service flow implementation.
    • "Deep Customization of UI Components": Custom component development, theme systems, and animation effects.
  3. Practical Case Series

    • "End-to-End Weather App Development": Complete case study from requirements analysis to release.
    • "E-commerce App Performance Optimization": Techniques for startup speed, memory usage, and rendering FPS.
    • "Cross-Device App Development": Building multi-device apps (phone/tablet/PC) with ArkUI-X.
  4. Certification Preparation Series

    • "HarmonyOS Application Developer Certification Guide": Exam outline interpretation and key knowledge review.
    • "Certification Practice Questions": Analysis of past exam questions and problem-solving strategies.

Effective Learning Methods

  1. Structured Learning Paths: Use preset paths (e.g., "Application Developer Growth Path") to complete courses in stages.
  2. Learn by Doing: Replicate example code immediately after each lesson and verify results in DevEco Studio.
  3. Utilize Learning Tools: Bookmark key content and take notes using built-in course features.
  4. Engage in Live Sessions: Follow the "Live Calendar" to prepare questions for real-time interaction.
  5. Complete Quizzes: Reinforce knowledge with post-lesson assessments.

Practical Recommendations

  1. Fragmented Learning Strategy: Watch short videos (e.g., API overviews) during commutes; study practical cases in dedicated time blocks.
  2. Maintain Learning Records: Track completed courses, proficiency levels, and pending topics using Excel/Notion.
  3. Combine with Documentation: Bookmark official documentation links mentioned in courses for deeper exploration.
  4. Join Learning Communities: Find study partners through course comments or Huawei Developer Forum for collaborative projects.
  5. Monitor Course Updates: Regularly check the "Latest Courses" section for new HarmonyOS features.
  6. Leverage Certification Goals: Validate learning outcomes by pursuing "HarmonyOS Application Developer Certification".

Conclusion and Outlook

As a key educational resource in the HarmonyOS ecosystem, Developer Classroom provides standardized and efficient learning channels. With HarmonyOS's rapid iteration, the platform will continue expanding content and introducing innovations like AI-driven recommendations and virtual labs. Developers should fully utilize this platform to build systematic knowledge and enhance technical capabilities through practice.

Case Study: ArkTS Basic Syntax

Below are core examples of ArkTS basic syntax, covering key concepts like variable declaration, custom components, and event handling:

1. Variable Declaration and Type Inference

// Explicit type declaration
let message: string = 'Hello HarmonyOS';
const version: number = 4.0;

// Automatic type inference (recommended)
let appName = 'MyApp'; // Inferred as string
const maxCount = 100;  // Inferred as number
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2. Custom Components and UI Description

@Entry
@Component
struct BasicComponent {
  // State variable: UI auto-refreshes on value change
  @State count: number = 0;

  build() {
    Column() {
      // Text component
      Text('ArkTS Basic Syntax Example')
        .fontSize(20)
        .fontWeight(FontWeight.Bold)

      // Button component with event handling
      Button('Click Count: ' + this.count)
        .onClick(() => {
          this.count++;
        })
        .margin(10)
        .width(200)

      // Divider component
      Divider()
        .height(2)
        .color('#eeeeee')

      // Conditional rendering
      if (this.count > 3) {
        Text('Count exceeds 3!')
          .fontColor(Color.Red)
      }
    }
    .width('100%')
    .padding(20)
  }
}
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3. Event Handling and State Management

@Component
struct EventHandlingExample {
  @State inputText: string = '';

  // Custom function
  private handleInputChange(value: string) {
    this.inputText = value;
  }

  build() {
    Column() {
      TextInput({
        placeholder: 'Enter text'
      })
      .onChange(this.handleInputChange)
      .width(300)
      .margin(10)

      Text('You entered: ' + this.inputText)
        .fontSize(16)
    }
    .padding(20)
  }
}
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