OpencodeConnector4Android

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OpencodeConnector4Android

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An Android client for OpenCode — chat with your coding assistant, manage sessions and track tasks from your phone.

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English | [中文](README_zh.md)

# OConnector

An Android client for the [OpenCode](https://opencode.ai) AI coding assistant. Connect to your PC, chat with AI, manage sessions across all projects, and track task progress — all from your phone.

![Android](https://img.shields.io/badge/Android-8.0%2B-34A853?logo=android)
![Kotlin](https://img.shields.io/badge/Kotlin-2.0-7F52FF?logo=kotlin)
![License](https://img.shields.io/badge/License-MIT-blue)

## Features

- **Multi-server management** — add and switch between multiple OpenCode servers from the home screen
- **Multi-project discovery** — automatically finds and lists sessions from all projects, regardless of which directory the server was started from
- **Optional child-session filtering** — hide sub-sessions from project lists when you only want root conversations
- **HTTPS (TLS) support** — connect through HTTPS reverse proxies (Lucky, Nginx, Caddy, etc.) with optional self-signed certificate trust
- **In-app update check** — automatically checks GitHub for new versions on startup, one-tap APK download & install (proxied for China)
- **Background SSE stability** — foreground service keeps the connection alive when the app is in background
- **State persistence across app kill** — question/permission bubbles and streaming output survive process death via disk cache; re-enter any session and pick up exactly where you left off
- **Unified chat settings** — configure Agent, Model, and Variant per-session from a single Settings dialog in the chat input bar
- **Variant selection** — choose specific model variants (e.g. quantization levels) when the server provides them
- **Time-based session grouping** — sessions grouped by Today / Yesterday / This Week / Older with relative timestamps
- **Child session tree** — expand/collapse child sessions in a tree layout under their parent
- **Session search** — debounced search bar to filter sessions by title
- **Active session status dots** — real-time green pulsing dots indicate busy sessions
- Real-time AI chat with SSE streaming
- Tool call rendering (thinking bubbles, tool summaries)
- Todo task panel overlay
- Agent picker (switch between AI agents)
- Session fork / delete
- Manual dark mode toggle (🌙/☀️ button)
- EN/ZH bilingual toggle (in-app)
- Password encrypted storage (EncryptedSharedPreferences)
- SSE auto-reconnection with exponential backoff
- **Chinese/non-ASCII path support** — works with project directories containing Chinese, Japanese, Korean, or other Unicode characters

## Download & Install

### Download APK

1. Go to [GitHub Releases](https://github.com/fangzx2001/OpencodeConnector4Android/releases/latest)
2. Download `app-release.apk` from the latest release
3. Open the file on your phone, allow "Install from unknown sources"
4. Open OConnector and connect to your PC

> Requires Android 8.0+ (API 26)

### Build from Source

```bash
gradlew.bat assembleDebug     # Windows
./gradlew assembleDebug       # macOS / Linux
```

The APK will be at `app/build/outputs/apk/debug/`.

## Getting Started

### Prerequisites

| Component | Requirement |
|-----------|-------------|
| **Android** | 8.0 (API 26) or higher |
| **PC** | Windows / macOS / Linux with [OpenCode](https://opencode.ai) installed |
| **Network** | Phone and PC on the same LAN, or connected via Tailscale / ZeroTier |

### Start OpenCode Server

**Using the startup script (recommended)**:

```batch
scripts\start-server.bat       # Windows
bash scripts/start-server.sh   # macOS / Linux
```

**Manual start**:

```bash
opencode serve --hostname=0.0.0.0 --port=4096
```

You can start the server from any directory — OConnector will discover all projects automatically.

### Network Setup

| Scenario | How |
|----------|-----|
| **Same WiFi** | Phone and PC on the same router. Get PC IP with `ipconfig` (Windows) or `ifconfig` (macOS/Linux) |
| **USB Tethering** | Connect phone via USB, enable USB tethering. PC gets a new adapter at `192.168.42.x` |
| **Remote** | Use [Tailscale](https://tailscale.com) or ZeroTier. Enter PC's Tailscale IP (`100.x.x.x`) in the app |

**Verify**: Open `http://<PC_IP>:4096` in your phone's browser.

**Firewall**: Allow inbound port 4096.

### Usage

1. Open OConnector → tap **+** on the Server List screen to add your first server
2. Enter PC IP, port, and credentials → tap **Connect**
3. The session list shows all projects and sessions across your PC
4. Tap a project to see its sessions, tap a session to enter chat
5. Expand/collapse child sessions in the tree view, send messages, switch agents, track todos

### Connecting via HTTPS Reverse Proxy

If you use a reverse proxy (Lucky, Nginx, Caddy, etc.) to expose OpenCode with HTTPS:

1. Enter the proxy domain (e.g. `opencode.example.com`) and port
2. Enable **"Use HTTPS (TLS)"** toggle
3. If your proxy uses a self-signed certificate, also enable **"Allow untrusted certificates"**
4. Tap **Connect**

> **Tip**: For LAN setups without a domain, you can also use Tailscale HTTPS or configure local DNS.

## Tech Stack

| Technology | Purpose |
|------------|---------|
| Kotlin 2.0 + Jetpack Compose (Material3) | UI |
| Ktor HTTP/SSE Client 3.x | API + streaming |
| Hilt | Dependency injection |
| kotlinx.serialization | JSON |
| DataStore + EncryptedSharedPreferences | Storage |

## Project Structure

```
app/src/main/java/com/opencode/remote/
├── data/
│   ├── api/          # REST + SSE clients
│   ├── dto/          # Data models
│   ├── datastore/    # Preferences
│   ├── download/     # DownloadManager + FileProvider install
│   ├── github/       # GitHub Releases API + version compare
│   ├── repository/   # Repository pattern
│   └── sse/          # SSE event bus
├── service/          # Foreground service
├── ui/
│   ├── connection/   # Connect / Add Server screen
│   ├── serverlist/   # Server list (home screen)
│   ├── sessions/     # Project + session list
│   ├── chat/         # Chat + streaming + tools
│   ├── help/         # Help screen
│   ├── theme/        # Material3 theme
│   └── strings/      # i18n
└── AppNavigation.kt  # Nav graph
```

## FAQ

### Can't see all projects?

OConnector auto-discovers all projects. Make sure the server is running and the phone can reach it. Check the server console for errors.

### Session list is empty for a project?

The project may not have any sessions yet. Tap the FAB to create one.

### Can multiple phones connect?

Yes. The OpenCode server supports multiple clients.

## Security

- Only use on trusted local networks
- Use Tailscale / ZeroTier for remote access (encrypted)
- Do not expose port to the public internet
- Passwords encrypted locally via EncryptedSharedPreferences

## PR Version Convention

- PR (community-contributed) versions are named in the format `v_pr<version>` (e.g. `v_pr2`, `v_pr3`).
- PR versions are released separately from the main branch releases and contain features that have not yet been merged into `main`.
- All PRs should be merged into the `pr_version` branch.
- Contributors are expected to perform final checks and ensure compatibility with the latest `pr_version` branch before submitting.
- The `pr_test` branch is a backup/testing-only branch and should not be used as the merge target.

## Contributing

1. Fork → branch → commit → push → PR
2. Ensure code compiles and is compatible with the latest `pr_version` branch
3. Describe changes in the PR

## License

[MIT License](LICENSE)

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