Push-to-Talk Walkie-Talkie App
Let's create a cross-platform walkie-talkie app with:
Real-time voice streaming
Push-to-talk (PTT) button
Background audio capture
Peer-to-peer or server-based communication
🚀 Step-by-Step Implementation
1. Project Setup
dotnet new maui -n MauiWalkieTalkie
cd MauiWalkieTalkie
2. Required NuGet Packages
3. UI Design (MainPage.xaml)
4. Audio Capture & Streaming
5. Communication Options
Option A: SignalR (Server-Based)
Option B: Peer-to-Peer (UDP)
6. Platform-Specific Tweaks
Android (Manifest)
iOS (Info.plist)
7. Advanced Features
Voice Activity Detection (VAD)
// In AudioRecorderService configuration
Audio Compression (Opus Codec)
// Add NuGet: Opus.NET
📱 Sample App Flow
User holds PTT button → Records audio
Releases button → Compresses & sends
Recipient device plays audio instantly
🚀 Performance Considerations
| Approach | Latency | Complexity | Best For |
|---|---|---|---|
| SignalR | ~200ms | Low | Small groups, internet required |
| UDP P2P | ~50ms | Medium | LAN networks, no server |
| WebRTC | ~100ms | High | Best quality, NAT traversal |