12. Shared Element Transitions & Interactive Drag-to-Dismiss Bottom Sheets • React Native: Cross-Platform Mobile Engineering • Rishabh Ki Kaksha

React Native: Cross-Platform Mobile Engineering › 12. Shared Element Transitions & Interactive Drag-to-Dismiss Bottom Sheets

50 mins

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Course Syllabus

Module 1: React Native Internals, Bridge vs JSI Architecture

01. React Native Evolution: The Legacy Bridge Architecture vs The New Architecture (TurboModules & Fabric) 02. JavaScript Interface (JSI), Hermes JS Engine & C++ Shared Memory Integration 03. Expo Bare Workflow vs React Native CLI: When to Use What in Big Tech

Module 2: Core Components, Flexbox & Responsive Mobile Layouts

04. Core Primitives: View, Text, Image, ScrollView & High-Performance FlatList/FlashList Optimization 05. Mobile Flexbox Mastery: SafeAreaView, Dimensions, PixelRatio & Multi-Screen Scaling 06. Keyboard Handling Architecture: KeyboardAvoidingView & Input Accessories

Module 3: React Navigation 6/7 & Native Stack Architecture

07. React Navigation: Native Stack Navigator vs Stack Navigator Performance Differences 08. Bottom Tabs, Material Top Tabs & Drawer Navigation Nested Routing 09. Deep Linking & Universal Links (iOS Associated Domains & Android App Links)

Module 4: 60FPS Native Animations: Reanimated 3 & Gesture Handler

10. The Native Animation Thread: Animated API vs React Native Reanimated 3 Worklets 11. Complex Gesture Interactions with React Native Gesture Handler (Pan, Pinch, Fling) 12. Shared Element Transitions & Interactive Drag-to-Dismiss Bottom Sheets

Module 5: Offline Storage, SQLite, MMKV & Native Modules Bridging

13. High-Speed Local Storage: AsyncStorage vs MMKV (100x Faster Sync KV Store) 14. Offline-First Architecture: WatermelonDB / SQLite with Background Cloud Synchronization 15. Native Device Hardware Access: Camera, Geolocation, Biometrics (FaceID/Fingerprint) & Push Notifications 16. Custom Native Module Development: Writing Swift/Kotlin Native Code for React Native

Module 6: Mobile DevOps: EAS Build, OTA Updates & App Store/Play Store Release

17. Mobile App Performance Profiling: Flipper, React Native DevTools & Memory Leak Detection 18. Over-The-Air (OTA) Live Updates with EAS Update / CodePush Architecture 19. Mobile App Security: SSL Pinning, Secure Keystore Storage & Code Obfuscation (ProGuard) 20. Cloud CI/CD & App Store Deployment: Automated Builds with EAS Build & Fastlane Automation

Interactive Lesson Studio

# 12. Shared Element Transitions & Interactive Drag-to-Dismiss Bottom Sheets

> React Native Notes by Rishabh - Topic 12

---

### 1. Shared Element Transitions (App Store / Instagram Card Morph 🎴)

Screen A par card thumbnail par tap karne par wo smooth continuous morph hokar Screen B ka hero header image ban jata hai:

```tsx
// Screen A (Feed List):
<Animated.Image
    sharedTransitionTag={`course_banner_${course.id}`}
    source={{ uri: course.bannerUrl }}
    style={styles.thumbnail}
/>

// Screen B (Course Detail View):
<Animated.Image
    sharedTransitionTag={`course_banner_${course.id}`}
    source={{ uri: course.bannerUrl }}
    style={styles.heroHeader}
/>
```

---

### 2. High-Performance Bottom Sheet (`@gorhom/bottom-sheet`)

Native UI thread modal sheet with multi-point snap points: `['25%', '50%', '90%']`.

---

### 3. Master Comparison Matrix

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### 4. Interview Ke 3 Sawal Is Topic Se

1. **Shared Element Transition me `sharedTransitionTag` kaise match hota hai?** -> Reanimated internally dono screens ke layout coordinates capture karke screen transition ke dauran coordinate interpolation run karta hai.
2. **Bottom Sheet keyboard open hone par auto-resize kaise karta hai?** -> `android_keyboardInputMode="adjustResize"` aur `keyboardBehavior="interactive"` configuration se.
3. **Custom Transition Springs kaise customize hoti hain?** -> `sharedTransitionCustomAnimations` me custom mass, damping, aur stiffness properties pass karke.

---
**Next Topic:** 13. High-Speed Local Storage: AsyncStorage vs MMKV (100x Faster Sync KV Store)

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Rishabh Gehlot

PHP 8+ & Laravel 11 Master Track