📽️ Vertical Swipe Video Player (Android)

A high-performance Android app that implements a vertical swipe video player similar to Facebook Reels using ViewPager2, ExoPlayer (Media3), and ViewModel for seamless playback state retention.

🎯 Features

✅ ViewPager2 + FragmentStateAdapter → Smooth vertical swipe experience
✅ ExoPlayer (Media3) → High-performance video playback
✅ ViewModel for Playback State → Resumes video when swiping back
✅ Efficient Memory Management → Only one ExoPlayer runs at a time
✅ Optimized Performance → Prevents memory leaks and excessive player instances

🚀 Tech Stack

• Kotlin
• ViewPager2 (for swipe functionality)
• ExoPlayer (Media3) (for video playback)
• ViewModel (for retaining playback state)

📂 Project Structure

📂 app
 ┣ 📜 MainActivity.kt  → Sets up ViewPager2  
 ┣ 📜 FragmentVideo.kt  → Handles ExoPlayer instance per page  
 ┣ 📜 PagerAdapterVideo.kt  → Adapter for ViewPager2  
 ┣ 📜 ViewModelMain.kt  → Stores playback positions  
 ┣ 📜 ViewModelVideo.kt  → Handle Exoplayer

📸 Screenshots

Scrolling Experience

Video Playback

vid_swipe_exo_player.mp4

🔧 Setup & Installation

1. Clone the repo

   git clone https://github.com/epegasus/SwipeExoPlayer.git

2. Open in Android Studio
3. Run the project on an emulator or device

🛠️ How It Works

• The ViewPager2 loads VideoFragment for each video.
• Each fragment initializes ExoPlayer in onViewCreated().
• The ViewModel stores playback position and restores it when swiping back.
• The app ensures only one ExoPlayer instance plays at a time to optimize memory usage.

🙌 Contributions

Feel free to fork, improve, and submit PRs to enhance this project!

📜 License

This project is licensed under the MIT License.