连接服务协议出错：异常：尝试连接 Dart 天文台 5 次，均失败。放弃。 URL 是

Question

我的应用程序启动但随后由于错误而停止。我正在使用 Windows 10，android 工作室作为 IDE，并尝试构建一个 android 应用程序。

如果我在 Android 工作室之外使用终端，它可以工作，所以它应该与 android 工作室相关。

控制台：

Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Gradle task 'assembleDebug'...
Built build\app\outputs\apk\debug\app-debug.apk.
Installing build\app\outputs\apk\app.apk...
Error connecting to the service protocol: Exception: Attempted to connect to 
Dart observatory 5 times, and all attempts failed. Giving up. The URL was 
ws://127.0.0.1:50997/ws

颤振医生：

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.0.0, on Microsoft Windows [Version 
10.0.16299.847], locale de-DE)
[!] Android toolchain - develop for Android devices (Android SDK 28.0.3)
X Android license status unknown.
[√] Android Studio (version 3.2)
[√] Connected device (1 available)

! Doctor found issues in 1 category.

Answer 1

如果您配置了代理，确保您还设置了环境变量

NO_PROXY=127.0.0.1

连接服务协议出错：异常：尝试连接 Dart 天文台 5 次，均失败。放弃。 URL 是

Error connecting to the service protocol: Exception: Attempted to connect to Dart observatory 5 times, and all attempts failed. Giving up. The URL was

error-handling

service

apk

dart

flutter