iOS模拟器运行Flutter应用持续出现Lost connection to device错误求助

问题现象 #

在iOS模拟器中运行Flutter应用时反复出现**"Lost connection to device"**错误，Android模拟器运行正常。

错误详情 #

Lost connection to device.
Error: Unable to terminate com.myPackageName.Dev on 6EAC7BBF-3767-44C4-886A-35D72D963210:
ProcessException: Process exited abnormally with exit code 3:
An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=3):
Simulator device failed to terminate com.myPackageName.Dev.
found nothing to terminate
Underlying error (domain=NSPOSIXErrorDomain, code=3):
    The request to terminate "com.myPackageName.Dev" failed. found nothing to terminate
    found nothing to terminate
  Command: /usr/bin/arch -arm64e xcrun simctl terminate 6EAC7BBF-3767-44C4-886A-35D72D963210 com.myPackageName.Dev
the Dart compiler exited unexpectedly.

已尝试的解决方案 #

• 执行命令：flutter clean、flutter doctor、flutter run
• 重启电脑
• 删除驱动数据

开发环境 #

• Android Studio Iguana | 2023.2.1 Patch 2
• Dart 3.3.3
• Flutter doctor检测结果：

[✓] Flutter (Channel stable, 3.19.5, on macOS 14.4.1 23E224 darwin-arm64, locale en-PK)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.3)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.2)
[✓] VS Code (version 1.88.1)
[✓] Connected device (3 available)
    ! Error: Browsing on the local area network for Johnny’s iPhone 12 mini. Ensure the device is unlocked and attached with a cable or
      associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
    ! Error: Browsing on the local area network for Johnny ipad. Ensure the device is unlocked and attached with a cable or associated with
      the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
    ! Error: Browsing on the local area network for iPhone  14 pro. Ensure the device is unlocked and attached with a cable or associated with
      the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources

针对性解决建议 #

1. 重置iOS模拟器
   • 打开iOS模拟器，点击顶部菜单Simulator > Erase All Content and Settings...，确认重置后重新运行应用。
2. 清理iOS构建缓存并重新安装依赖
   • 执行以下命令：

     flutter clean
     rm -rf ios/Pods
     rm ios/Podfile.lock
     cd ios && pod install && cd ..
     

3. 删除并重建模拟器设备
   • 打开Xcode，进入Window > Devices and Simulators，选中故障模拟器右键选择Delete，再重新添加同型号模拟器。
4. 指定模拟器运行应用
   • 先执行flutter devices获取目标模拟器ID，再运行：

     flutter run -d <模拟器ID>
     

5. 终止残留进程
   • 打开活动监视器，搜索并终止所有包含com.myPackageName.Dev或Flutter的相关进程，再重新运行应用。

内容的提问来源于stack exchange，提问作者Wahab Khan Jadon