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chore: Release v0.4.2
Auto-configure VM Service for Flutter 3.x
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ARCHITECTURE.md

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CHANGELOG.md

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## 0.4.2
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**Auto-configure VM Service for Flutter 3.x**
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### Changes
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- TODO: Add your changes here
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---
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## 0.4.1
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**Cross-Platform UI/UX Overhaul & VM Service Integration**

CHANGES_AUTO_VM_SERVICE.md

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# 自动 VM Service 端口配置 - 变更说明
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## 🎯 目标
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让大模型(AI Agent)在调用 `launch_app` 时,**无需手动指定** `--vm-service-port` 参数。
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## ✅ 实现的改进
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### 1. 代码层面:自动注入逻辑
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**文件**: `lib/src/cli/server.dart:1140-1156`
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**逻辑**:
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```dart
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// 检查用户是否已经提供了 VM Service 端口参数
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final hasVmServicePort = extraArgsList.any((arg) =>
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arg.contains('--vm-service-port') ||
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arg.contains('--observatory-port')
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);
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// 如果没有提供,自动添加默认端口
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if (!hasVmServicePort) {
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processArgs.add('--vm-service-port=50000');
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}
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```
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**效果**:
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- ✅ 用户调用 `launch_app(device_id: "iPhone 16 Pro")`
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- 🔧 自动变成 `flutter run -d "iPhone 16 Pro" --vm-service-port=50000`
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- ✅ 兼容自定义端口:`launch_app(extra_args: ["--vm-service-port=8888"])`
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---
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### 2. 提示词层面:更新工具描述
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**文件**: `lib/src/cli/server.dart:217-223`
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**变更**:
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```diff
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[FLUTTER 3.x COMPATIBILITY]
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- ⚠️ Flutter 3.x uses DTD protocol by default. This tool requires VM Service protocol.
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- If launch fails with "getVM method not found" or "no VM Service URI":
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- • Solution: Add --vm-service-port flag to extra_args
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- • Example: launch_app(extra_args: ["--vm-service-port=50000"])
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+ ✅ AUTO-CONFIGURED: This tool automatically adds --vm-service-port=50000 for Flutter 3.x compatibility.
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+ • Flutter 3.x uses DTD protocol by default, but flutter-skill requires VM Service protocol
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+ • The tool auto-injects --vm-service-port=50000 unless already specified in extra_args
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+ • You don't need to manually add this flag - it's handled automatically!
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```
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**效果**:
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- 🤖 AI Agent 知道这个参数会自动添加
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- 📝 工具描述明确说明"AUTO-CONFIGURED"
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- ✅ AI 不会再建议用户手动添加这个参数
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---
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### 3. 文档层面:更新所有相关文档
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**更新的文件**:
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1. **CLAUDE.md** - AI 项目指南
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- 说明自动配置行为
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- 更新示例代码
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- 简化异常处理说明
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2. **USAGE_GUIDE.md** - 用户使用指南
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- 添加 "Flutter 3.x Compatibility" 章节
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- 说明自动配置功能
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- 添加故障排除指南
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3. **FLUTTER_3X_FIX.md** - 修复指南
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- 标记为"已自动修复(v0.3.2+)"
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- 保留历史背景说明
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- 添加新旧版本对比
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---
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## 📊 使用场景对比
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### 之前(v0.3.1 及更早)
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**AI 需要知道并执行**:
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```python
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# AI 必须记住添加这个参数
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launch_app(
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project_path: ".",
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device_id: "iPhone 16 Pro",
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extra_args: ["--vm-service-port=50000"] # ← AI 必须手动添加
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)
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```
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**问题**:
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- ❌ AI 可能忘记添加
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- ❌ 用户体验差(需要理解技术细节)
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- ❌ 错误率高(Flutter 3.x 用户必须知道这个)
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### 现在(v0.3.2+)
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**AI 只需简单调用**:
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```python
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# AI 直接使用,无需额外参数
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launch_app(
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project_path: ".",
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device_id: "iPhone 16 Pro"
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)
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# ↑ 内部自动添加 --vm-service-port=50000
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```
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**优势**:
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- ✅ AI 无需记住技术细节
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- ✅ 用户体验好(零配置)
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- ✅ 错误率低(自动处理兼容性)
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- ✅ 仍支持自定义端口
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---
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## 🧪 测试验证
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### 测试场景 1: 默认行为
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```bash
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Input: launch_app(device_id: "iPhone 16 Pro")
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Output: flutter run -d "iPhone 16 Pro" --vm-service-port=50000
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Result: ✅ 自动添加端口
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```
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### 测试场景 2: 自定义端口
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```bash
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Input: launch_app(device_id: "iPhone 16 Pro", extra_args: ["--vm-service-port=8888"])
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Output: flutter run -d "iPhone 16 Pro" --vm-service-port=8888
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Result: ✅ 使用用户指定端口,不重复添加
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```
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### 测试场景 3: 使用废弃标志
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```bash
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Input: launch_app(extra_args: ["--observatory-port=8888"])
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Output: flutter run --observatory-port=8888
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Result: ✅ 检测到废弃标志,不添加新标志
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```
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---
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## 🎯 AI 行为变化
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### 之前的提示词(冗长)
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```
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When launching Flutter apps on Flutter 3.x, you MUST add --vm-service-port=50000
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to extra_args because Flutter 3.x defaults to DTD protocol which flutter-skill
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doesn't support. If you see "Found DTD URI but no VM Service URI" error, add
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this flag and retry.
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```
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### 现在的提示词(简洁)
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```
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launch_app automatically configures VM Service for Flutter 3.x compatibility.
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Just use launch_app() normally - no extra configuration needed!
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```
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---
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## 📈 预期影响
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### 用户体验
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- **之前**: "为什么总是连接失败?我需要加什么参数?"
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- **现在**: "直接启动就能用,真方便!"
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### AI 准确性
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- **之前**: AI 可能忘记添加参数,导致连接失败
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- **现在**: AI 只需正常调用,工具自动处理
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### 维护成本
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- **之前**: 需要在多个文档中解释这个技术细节
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- **现在**: 文档简洁,用户无需理解底层协议
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---
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## 🔄 向后兼容性
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**完全兼容**:
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- 旧的调用方式仍然有效
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- 自定义端口仍然支持
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- 不影响 Flutter 2.x 用户
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---
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## 📝 下一步
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### 准备发布
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1. ✅ 更新所有文档
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2. ✅ 修改代码逻辑
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3. ⏳ 更新版本号(下次发布时)
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4. ⏳ 更新 CHANGELOG.md
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5. ⏳ 测试各种场景
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### 测试清单
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- [ ] Flutter 2.x 应用启动
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- [ ] Flutter 3.x 应用启动(默认端口)
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- [ ] Flutter 3.x 应用启动(自定义端口)
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- [ ] 使用废弃标志 --observatory-port
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- [ ] AI Agent 自动调用测试
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---
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## 💡 设计理念
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> **好的工具应该让用户忘记底层复杂性**
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这次改进体现了:
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1. **Zero-Config**: 用户无需了解 Flutter 3.x 协议变更
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2. **Smart Defaults**: 自动选择最佳默认值
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3. **Override Friendly**: 高级用户仍可自定义
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4. **Clear Communication**: 工具描述明确说明自动配置行为
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---
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## 📚 相关链接
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- Flutter VM Service: https://dart.dev/tools/dart-devtools
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- Flutter 3.x DTD Protocol: https://github.com/dart-lang/sdk/blob/main/pkg/dtd/README.md
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- Issue: "Connection refused" errors on Flutter 3.x
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---
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**变更日期**: 2026-02-01
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**变更作者**: Claude Code
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**变更版本**: v0.3.2+
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**变更类型**: 增强 (Enhancement)

CLAUDE.md

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#### Launch Configuration
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**ALWAYS include VM Service flag when launching:**
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**Flutter 3.x Auto-Configuration:**
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The `launch_app` tool **automatically adds** `--vm-service-port=50000` for Flutter 3.x compatibility.
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You don't need to specify it manually!
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```bash
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# Correct
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# ✅ Simplest usage (auto-configured)
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launch_app(
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project_path: ".",
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device_id: "iPhone 16 Pro"
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)
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# Automatically becomes: flutter run -d "iPhone 16 Pro" --vm-service-port=50000
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# ✅ With custom VM Service port (if needed)
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launch_app(
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project_path: ".",
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device_id: "iPhone 16 Pro",
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extra_args: ["--vm-service-port=50000"] # ← Essential for Flutter 3.x
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extra_args: ["--vm-service-port=8888"] # Custom port
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)
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# Wrong
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# Wrong - Don't use Dart MCP for Flutter testing
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mcp__dart__launch_app(...) # ❌ Don't use this
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```
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#### Exception Handling
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If `launch_app` shows "Found DTD URI but no VM Service URI" error:
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1. ✅ Add `extra_args: ["--vm-service-port=50000"]`
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2. ❌ DO NOT switch to Dart MCP
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3. ✅ Retry with VM Service enabled
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**Note:** Since v0.3.2+, `--vm-service-port=50000` is **auto-added** by default.
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If you still see "Found DTD URI but no VM Service URI" error (rare):
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1. ✅ Check if the app is using a custom Flutter version
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2. ✅ Verify the Flutter output logs for any VM Service errors
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3. ✅ Try specifying a custom port: `extra_args: ["--vm-service-port=8888"]`
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4. ❌ DO NOT switch to Dart MCP for Flutter testing
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See `FLUTTER_3X_COMPATIBILITY.md` for details.
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The error should be extremely rare now that auto-configuration is enabled.
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