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Android Native Dev

Android native application development and UI design guide. Covers Material Design 3, Kotlin/Compose development, project configuration, accessibility, and b... Skill: Android Native Dev Owner: smasherlxd Summary: Android native application development and UI design guide. Covers Material Design 3, Kotlin/Compose development, project configuration, accessibility, and b... Tags: latest:1.0.0 Version history: v1.0.0 | 2026-04-02T03:57:35.367Z | auto Initial release of the Android Native Application Development and UI Design Guide. - Covers project setup, required files checkli

OpenClaw
View on ClawHubHomepage

Rank

62

Safety

84

Downloads

1.8k

Updated

Oct 10, 2026

Version

1.0.0

Source

CLAWHUB

About

What it does, and when to use it.

Capability contract not published. No trust telemetry is available yet. 1.8K downloads reported by the source. Last updated 10/10/2026.

Avoid when

  • Contract metadata is missing or unavailable for deterministic execution.

Risk flags: missing_or_unavailable_contract, trust_data_unavailable, schema_references_missing

Public facts

Every fact links back to the source it came from.

Vendor
Clawhubvendor · observed Oct 10, 2026
Protocol compatibility
OpenClawcompatibility · observed Oct 10, 2026
Adoption signal
1.8K downloadsadoption · observed Oct 10, 2026
Latest release
1.0.0release · observed Apr 2, 2026
Handshake status
UNKNOWNsecurity

Install and run

Setup complexity: medium.

clawhub skill install s170cnxp4nj0mcv7te9sshp0g583nte7:android-native-dev
  1. Setup complexity is MEDIUM. Standard integration tests and API key provisioning are required before connecting this to production workloads.
  2. Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data.

Contract: missing

curl -s "https://www.xpersona.co/api/v1/agents/clawhub-smasherlxd-android-native-dev/snapshot"

Documentation

CLAWHUB

107,839 characters of source documentation, loaded on request.

Extracted files

5 files captured from the source.

SKILL.md

---
name: android-native-dev
description: Android native application development and UI design guide. Covers Material Design 3, Kotlin/Compose development, project configuration, accessibility, and build troubleshooting. Read this before Android native application development.
license: MIT
metadata:
  version: "1.0.0"
  category: mobile
  sources:
    - Material Design 3 Guidelines (material.io)
    - Android Developer Documentation (developer.android.com)
    - Google Play Quality Guidelines
    - WCAG Accessibility Guidelines
---

## 1. Project Scenario Assessment

Before starting development, assess the current project state:

| Scenario | Characteristics | Approach |
|----------|-----------------|----------|
| **Empty Directory** | No files present | Full initialization required, including Gradle Wrapper |
| **Has Gradle Wrapper** | `gradlew` and `gradle/wrapper/` exist | Use `./gradlew` directly for builds |
| **Android Studio Project** | Complete project structure, may lack wrapper | Check wrapper, run `gradle wrapper` if needed |
| **Incomplete Project** | Partial files present | Check missing files, complete configuration |

**Key Principles**:
- Before writing business logic, ensure `./gradlew assembleDebug` succeeds
- If `gradle.properties` is missing, create it first and configure AndroidX

### 1.1 Required Files Checklist

```
MyApp/
├── gradle.properties          # Configure AndroidX and other settings
├── settings.gradle.kts
├── build.gradle.kts           # Root level
├── gradle/wrapper/
│   └── gradle-wrapper.properties
├── app/
│   ├── build.gradle.kts       # Module level
│   └── src/main/
│       ├── AndroidManifest.xml
│       ├── java/com/example/myapp/
│       │   └── MainActivity.kt
│       └── res/
│           ├── values/
│           │   ├── strings.xml
│           │   ├── colors.xml
│           │   └── themes.xml
│           └── mipmap-*/       # App icons
```

---

## 2. Project Configuration

### 2.1 gradle.properties

```properties
# Required configuration
android.useAndroidX=true
android.enableJetifier=true

# Build optimization
org.gradle.parallel=true
kotlin.code.style=official

# JVM memory settings (adjust based on project size)
# Small projects: 2048m, Medium: 4096m, Large: 8192m+
# org.gradle.jvmargs=-Xmx4096m -Dfile.encoding=UTF-8
```

> **Note**: If you encounter `OutOfMemoryError` during build, increase `-Xmx` value. Large projects with many dependencies may require 8GB or more.

### 2.2 Dependency Declaration Standards

```kotlin
dependencies {
    // Use BOM to manage Compose versions
    implementation(platform("androidx.compose:compose-bom:2024.02.00"))
    implementation("androidx.compose.ui:ui")
    implementation("androidx.compose.material3:material3")
    
    // Activity & ViewModel
    implementation("androidx.activity:activity-compose:1.8.2")
    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.7.0")

_meta.json

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  "ownerId": "kn78tw2w75wzsn61qrwpqcs2sh82j0tb",
  "slug": "android-native-dev",
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  "publishedAt": 1775102255367
}

references/accessibility.md

# Accessibility Guidelines

Comprehensive accessibility requirements for Android applications.

## Core Requirements

### Minimum Standards

| Requirement | Specification |
|-------------|---------------|
| Color contrast (text) | 4.5:1 minimum |
| Color contrast (large text) | 3:1 minimum |
| Color contrast (UI components) | 3:1 minimum |
| Touch targets | 48 × 48dp minimum |
| Content descriptions | All interactive elements |
| Focus indicators | Clearly visible |
| Screen reader support | Proper semantics |

## Content Labels

### contentDescription

Use for non-text interactive elements.

**When to use:**
- ImageView, ImageButton
- CheckBox, Switch (state description)
- Custom drawable views
- Icons that convey meaning

**When NOT to use:**
- TextView (uses text content automatically)
- Decorative images (set to null)
- Elements with labelFor relationship

### android:hint

Use for editable text fields to show placeholder text.

**Important**: Don't use contentDescription on EditText—it interferes with accessibility services.

### android:labelFor

Link labels to input fields by setting labelFor on the TextView to reference the EditText ID.

## Label Best Practices

### Do's

| Practice | Example |
|----------|---------|
| Be concise | "Save" not "Click here to save" |
| Describe action/purpose | "Delete message" |
| Be unique in context | "Delete item 3" not just "Delete" |
| Update dynamically | "Pause" ↔ "Play" based on state |

### Don'ts

| Avoid | Reason |
|-------|--------|
| Include element type | TalkBack announces "button" automatically |
| Say "button", "image", etc. | Redundant with accessibility info |
| Use "click" or "tap" | Input method varies |
| Leave empty/generic | "Button" or "Image" is unhelpful |

### Examples

| Bad | Good |
|-----|------|
| "Save button" | "Save" |
| "Click here to submit" | "Submit" |
| "Image" | "Profile photo of John" |
| "Button 1" | "Add to cart" |

## Focus and Navigation

### Focus Groups

Group related elements using `screenReaderFocusable="true"` on the container and `focusable="false"` on child elements. TalkBack will announce all children's content in a single utterance.

### Headings

Mark section headers with `accessibilityHeading="true"`. Users can navigate between headings for quick scanning.

### Pane Titles

Identify screen regions with `accessibilityPaneTitle`. Accessibility services announce pane changes.

### Focus Order

- Natural reading order (top-to-bottom, start-to-end)
- Use `accessibilityTraversalBefore/After` for custom order
- Ensure all interactive elements are focusable
- Skip decorative elements

## Decorative Elements

Skip elements that don't convey information:
- Set `contentDescription="@null"`
- Or set `importantForAccessibility="no"`

## Custom Accessibility Actions

### Adding Actions

Provide alternatives for gesture-based interactions using `ViewCompat.addAc

references/adaptive-screens.md

# Adaptive Screens Guidelines

Requirements for large screens, tablets, foldables, and multi-window support.

## Adaptive Quality Tiers

Google defines three progressive quality tiers for adaptive apps:

### Tier 3: Adaptive Ready (Basic)

Minimum requirements for all apps:

| Requirement | Description |
|-------------|-------------|
| Full screen | App fills display, no letterboxing |
| Configuration changes | Handles rotation, folding, resizing |
| Multi-window | Supports split-screen mode |
| Basic input | Keyboard, mouse, trackpad support |

### Tier 2: Adaptive Optimized (Better)

Enhanced experience:

| Requirement | Description |
|-------------|-------------|
| Layout optimization | Responsive layouts for all sizes |
| Enhanced input | Full keyboard shortcuts, mouse hover states |
| Continuity | Seamless state preservation |

### Tier 1: Adaptive Differentiated (Best)

Device-specific excellence:

| Requirement | Description |
|-------------|-------------|
| Multitasking | Drag and drop, activity embedding |
| Foldable postures | Table-top mode, book mode support |
| Stylus | Full stylus input support |
| Desktop | Windowed mode optimization |

## Screen Size Classes

### Width-Based Classes

| Class | Width | Typical Devices |
|-------|-------|-----------------|
| Compact | < 600dp | Phone portrait |
| Medium | 600-840dp | Tablet portrait, phone landscape |
| Expanded | > 840dp | Tablet landscape, desktop |

### Layout Strategies

| Screen Class | Navigation | Content Layout |
|--------------|------------|----------------|
| Compact | Bottom nav | Single pane |
| Medium | Nav rail | List-detail (optional) |
| Expanded | Nav drawer/rail | List-detail, multi-pane |

## Configuration Changes

### Must Handle

| Change | Trigger |
|--------|---------|
| Rotation | Device rotated |
| Fold/Unfold | Foldable state change |
| Window resize | Multi-window adjustment |
| Split screen | Enter/exit split mode |
| Keyboard | External keyboard attach/detach |

### Configuration Handling

| Approach | Description |
|----------|-------------|
| Let system handle | Default, activity recreated |
| Handle manually | Declare configChanges, implement onConfigurationChanged |

### State Preservation

- Use ViewModel for UI state
- Use SavedStateHandle for process death
- Test with "Don't keep activities" enabled

## Multi-Window Support

### Requirements

| Feature | Status |
|---------|--------|
| resizeableActivity | true (default API 24+) |
| Minimum size | Support 220dp width |
| State handling | Preserve across resize |

### Best Practices

- Don't assume full-screen ownership
- Handle onConfigurationChanged gracefully
- Test at minimum supported size
- Support free-form windows (desktop mode)

## Foldable Devices

### Postures

| Posture | Description | Use Case |
|---------|-------------|----------|
| Flat | Fully open | Normal tablet use |
| Half-

references/design-style-guide.md

# Design Style Guide

Match visual design to app category and target audience for cohesive user experience.

## Style Selection Principle

> **The visual style must match the app's purpose and audience.**
> A finance app should feel trustworthy, not playful.
> A children's app should feel fun, not corporate.

## Style Selection Matrix

| App Category | Visual Style | Color Palette | Typography | Interaction |
|--------------|--------------|---------------|------------|-------------|
| Utility/Tool | Minimalist | Neutral + 1 accent | Clean sans-serif | Direct, efficient |
| Finance/Banking | Professional Trust | Blue/Green/Navy | Conservative | Secure, deliberate |
| Health/Wellness | Calm & Natural | Soft greens, earth tones | Rounded, friendly | Gentle, encouraging |
| Kids (3-5) | Playful Simple | Bright primary colors | Large, rounded | Big targets, forgiving |
| Kids (6-12) | Fun & Engaging | Vibrant, varied | Bold, readable | Gamified feedback |
| Social/Entertainment | Expressive | Brand-driven | Dynamic | Gesture-rich |
| Productivity | Clean & Focused | Minimal, high contrast | Professional | Keyboard-friendly |
| E-commerce | Conversion-focused | Brand + CTA colors | Scannable | Quick actions |
| Gaming | Immersive | Theme-driven | Stylized | Custom gestures |

## Detailed Style Profiles

### Minimalist / iOS-like (Utility Apps)

**When to use**: Tools, utilities, calculators, file managers, settings apps

**Visual Characteristics**:

| Element | Specification |
|---------|---------------|
| Colors | 2-3 colors max, neutral base |
| Whitespace | Generous, 24-48dp margins |
| Typography | Single font family, clear hierarchy |
| Icons | Line-based, consistent stroke |
| Shadows | Subtle or none |
| Borders | Thin (1dp) or none |
| Shapes | Subtle corners (8-12dp) |

**Interaction Style**:
- Direct manipulation
- Immediate feedback
- No unnecessary animations
- Efficient task completion

**Color Palette**:

| Role | Light Mode | Dark Mode |
|------|------------|-----------|
| Background | #FAFAFA | #1C1C1E |
| Surface | #FFFFFF | #2C2C2E |
| Primary | #007AFF | #0A84FF |
| Text | #000000 | #FFFFFF |
| Secondary | #8E8E93 | #8E8E93 |

**Reference Apps**: iOS Settings, Apple Notes, Google Calculator

---

### Professional Trust (Finance/Business)

**When to use**: Banking, investment, enterprise, B2B applications

**Visual Characteristics**:

| Element | Specification |
|---------|---------------|
| Colors | Blues, greens, navy (trust colors) |
| Whitespace | Structured, grid-based |
| Typography | Formal, conservative weights |
| Icons | Filled or outlined, consistent |
| Data visualization | Clear, accurate charts |
| Security indicators | Prominent locks, badges |

**Interaction Style**:
- Confirmatory (double-check important actions)
- Deliberate (not rushed)
- Secure-feeling
- Clear feedback on transactions

**Color Palette**:

| Role | Color | Name |
|

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Machine-readable data

The same record, as JSON, for agents and crawlers.

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Record generated Oct 10, 2026.

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