mobile-app-developer

仓库: 404kidwiz/claude-supercode-skills
安装量: 89
排名: #9025

安装

npx skills add https://github.com/404kidwiz/claude-supercode-skills --skill mobile-app-developer

Provides cross-platform mobile development expertise specializing in React Native and Flutter. Builds high-performance mobile applications with offline-first architectures, native module integration, and optimized delivery pipelines for iOS and Android.

When to Use

  • Building new mobile apps targeting both iOS and Android

  • Migrating web applications to mobile (React Native)

  • Implementing complex native features (Bluetooth, Biometrics, AR) in cross-platform apps

  • Optimizing app performance (startup time, frame drops, bundle size)

  • Designing offline-first data synchronization layers

  • Setting up mobile CI/CD pipelines (Fastlane, EAS, Codemagic)

2. Decision Framework

Framework Selection (2026 Standards)

Which framework fits the project?
│
├─ **React Native (0.76+)**
│  ├─ Team knows React? → **Yes** (Fastest ramp-up)
│  ├─ Need OTA Updates? → **Yes** (Expo Updates / CodePush)
│  ├─ Heavy Native UI? → **Maybe** (New Architecture makes this easier, but complex)
│  └─ Ecosystem? → **Massive** (npm, vast library support)
│
├─ **Flutter (3.24+)**
│  ├─ Pixel Perfection needed? → **Yes** (Skia/Impeller rendering guarantees consistency)
│  ├─ Heavy Animation? → **Yes** (60/120fps default)
│  ├─ Desktop support needed? → **Yes** (First-class Windows/macOS/Linux)
│  └─ Dart knowledge? → **Required** (Learning curve for JS devs)
│
└─ **Expo (Managed RN)**
   ├─ Rapid MVP? → **Yes** (Zero config, EAS Build)
   ├─ Custom Native Code? → **Yes** (Config Plugins handle 99% of cases)
   └─ Ejecting? → **No** (Prebuild allows native code without ejecting)

State Management & Architecture

| MVVM | MobX / Legend-State | Provider / Riverpod | Reactive UI, clean separation

| Redux-style | Redux Toolkit / Zustand | BLoC / Cubit | Complex enterprise apps, strict flow

| Atomic | Recoil / Jotai | Riverpod | Fine-grained updates, high performance

| Offline-First | WatermelonDB / Realm | Hive / Isar / Drift | Apps needing robust sync

Performance Constraints

| Cold Start | < 1.5s | Hermes (RN), Lazy Loading, Deferred initialization

| Frame Rate | 60fps (min) / 120fps (target) | Memoization, release thread (JS) vs UI thread, Impeller (Flutter)

| Bundle Size | < 30MB (Universal) | ProGuard/R8, Split APKs, Asset Optimization

| Memory | < 200MB (Avg) | Image caching, List recycling (FlashList)

Red Flags → Escalate to mobile-developer (Native):

  • Requirements for kernel-level driver interaction

  • App is a "wrapper" around a single heavy 3D view (Unity integration might be better)

  • Strict requirement for < 10MB app size

  • Dependency on private/undocumented iOS APIs

3. Core Workflows

Workflow 1: React Native New Architecture Setup

Goal: Initialize a high-performance React Native app with Fabric & TurboModules.

Steps:

  • Initialization (Expo)
npx create-expo-app@latest my-app -t default
cd my-app
npx expo install expo-router react-native-reanimated
  • Configuration (app.json)
{
  "expo": {
    "newArchEnabled": true,
    "plugins": [
      "expo-router",
      "expo-font",
      ["expo-build-properties", {
        "ios": { "newArchEnabled": true },
        "android": { "newArchEnabled": true }
      }]
    ]
  }
}
  • Directory Structure (File-based Routing)
/app
  /_layout.tsx      # Root layout (Provider setup)
  /index.tsx        # Home screen
  /(tabs)/          # Tab navigation group
    /_layout.tsx    # Tab configuration
    /home.tsx
    /settings.tsx
  /product/[id].tsx # Dynamic route
/components         # UI Components
/services           # API & Logic
/store              # State Management
  • Navigation Implementation
// app/_layout.tsx
import { Stack } from 'expo-router';
import { QueryClientProvider } from '@tanstack/react-query';

export default function RootLayout() {
  return (
    <QueryClientProvider client={queryClient}>
      <Stack screenOptions={{ headerShown: false }}>
        <Stack.Screen name="(tabs)" />
        <Stack.Screen name="modal" options={{ presentation: 'modal' }} />
      </Stack>
    </QueryClientProvider>
  );
}

Workflow 3: Performance Optimization (FlashList)

Goal: Render 10,000+ list items at 60fps.

Steps:

  • Replace FlatList
import { FlashList } from "@shopify/flash-list";

const MyList = ({ data }) => {
  return (
    <FlashList
      data={data}
      renderItem={({ item }) => <ListItem item={item} />}
      estimatedItemSize={100} // Critical for performance
      keyExtractor={item => item.id}
      onEndReached={loadMore}
      onEndReachedThreshold={0.5}
    />
  );
};
  • Memoize List Items
const ListItem = React.memo(({ item }) => {
  return (
    <View style={styles.item}>
      <Text>{item.title}</Text>
    </View>
  );
}, (prev, next) => prev.item.id === next.item.id);
  • Image Optimization

Use expo-image (uses SDWebImage/Glide native caching).

  • Enable cachePolicy="memory-disk".

  • Use transition={200} for smooth loading.

4. Patterns & Templates

Pattern 1: Native Module (Expo Config Plugin)

Use case: Adding native code without ejecting.

// plugins/withCustomNative.js
const { withAndroidManifest } = require('@expo/config-plugins');

const withCustomNative = (config) => {
  return withAndroidManifest(config, async (config) => {
    const androidManifest = config.modResults;

    // Add permission
    androidManifest.manifest['uses-permission'].push({
      $: { 'android:name': 'android.permission.BLUETOOTH' }
    });

    return config;
  });
};

module.exports = withCustomNative;

Pattern 2: Biometric Authentication Hook

Use case: Secure login with FaceID/TouchID.

import * as LocalAuthentication from 'expo-local-authentication';

export function useBiometrics() {
  const authenticate = async () => {
    const hasHardware = await LocalAuthentication.hasHardwareAsync();
    if (!hasHardware) return false;

    const isEnrolled = await LocalAuthentication.isEnrolledAsync();
    if (!isEnrolled) return false;

    const result = await LocalAuthentication.authenticateAsync({
      promptMessage: 'Login with FaceID',
      fallbackLabel: 'Use Passcode',
    });

    return result.success;
  };

  return { authenticate };
}

Pattern 3: The "Smart" API Layer

Use case: Handling auth tokens, retries, and network errors gracefully.

import axios from 'axios';
import * as SecureStore from 'expo-secure-store';

const api = axios.create({ baseURL: 'https://api.example.com' });

api.interceptors.request.use(async (config) => {
  const token = await SecureStore.getItemAsync('auth_token');
  if (token) {
    config.headers.Authorization = `Bearer ${token}`;
  }
  return config;
});

api.interceptors.response.use(
  (response) => response,
  async (error) => {
    if (error.response?.status === 401) {
      // Trigger token refresh logic
      // If refresh fails, redirect to login
    }
    return Promise.reject(error);
  }
);

6. Integration Patterns

backend-developer:

  • Handoff: Backend provides OpenAPI (Swagger) spec → Mobile dev generates TypeScript clients (openapi-generator).

  • Collaboration: Designing "Mobile-First" APIs (pagination, partial responses, minimal payload).

  • Tools: Postman, GraphQL.

ui-designer:

  • Handoff: Designer provides Figma with Auto-Layout → Dev maps to Flexbox (flexDirection, justifyContent).

  • Collaboration: Exporting SVGs vs PNGs (use SVGs/VectorDrawable).

  • Tools: Zeplin, Figma Dev Mode.

qa-expert:

  • Handoff: Dev provides test builds (TestFlight/Firebase) → QA runs regression.

  • Collaboration: Providing test IDs for E2E automation (testID="login_btn").

  • Tools: Appium, Detox, Maestro.

← 返回排行榜