Android studio - flutter:没有连接的设备 [英] Android studio - flutter: No Connected Devices

问题描述

我刚开始使用flutter进行移动开发，尝试运行默认的flutter程序时出现这个错误.

I have just started with mobile development using flutter, and there is this error when trying to run the default flutter program.

未找到连接的设备；请连接设备，或查看flutter.dev/setup 入门说明.

No connected devices found; please connect a device, or see flutter.dev/setup for getting started instructions.

• 这是一台 Windows 10 x64 机器.

  • This is a Windows 10 x64 machine.

    在 - D:\Program Files\Android\Android Studio1

    从 Android Studio 安装了 Android SDK - D:\Android\android-sdk

    Installed Android SDK from Android Studio in - D:\Android\android-sdk

    设置这些系统环境变量

    ANDROID_HOME - D:\Android\android-sdk;D:\Android\android-sdk\tools;D:\Android\android-sdk\build-tools;D:\Android\android-sdk\platform-tools

    ANDROID_HOME - D:\Android\android-sdk;D:\Android\android-sdk\tools;D:\Android\android-sdk\build-tools;D:\Android\android-sdk\platform-tools

    ANDROID_SDK_ROOT - D:\Android\android-sdk;D:\Android\android-sdk\tools;D:\Android\android-sdk\build-tools;D:\Android\android-sdk\platform-tools

    ANDROID_SDK_ROOT - D:\Android\android-sdk;D:\Android\android-sdk\tools;D:\Android\android-sdk\build-tools;D:\Android\android-sdk\platform-tools

    已安装 Nexus 6 API 28 设备和将仿真性能图形设置为硬件 GLES-2.0

    Installed Nexus 6 API 28 device & set Emulated Performance Graphics to Hardware GLES-2.0

    已安装 pie Android 9.0 x86 &pie Android 9.0 x86_64 因为我不确定使用哪个.AVD 模拟器在两个操作系统上都可以正常启动.(使用哪个?)

    Installed pie Android 9.0 x86 & pie Android 9.0 x86_64 as I was unsure which one to use. The AVD emulator launches fine with both the OS. (Which one to use?)

    在 - D:\Flutter\flutter

    当我运行 main.dart 时，它显示这个错误:

    When I run main.dart, it shows this error:

    当我在 Android Studio 中运行 flutter doctor 时，它显示了 2 个问题:

    When I run flutter doctor in the Android Studio it shows 2 issues:

    [X] Android toolchain - develop for Android devices
        X ANDROID_HOME = D:/Android/android-sdk
          but Android SDK not found at this location.
    [!] Connected device
        ! No devices available
    

    当我尝试从 flutter 目录在 powershell 中运行命令时，出现此错误:

    When I try to run a command in powershell from the flutter directory, it gives this error:

    推荐答案

    在环境变量中 >用户变量，添加一个新的PATH，如:C:\src\flutter\bin

    In environment variables > User Variables, add a new PATH, like: C:\src\flutter\bin

    然后重启你的机器.

    这篇关于Android studio - flutter:没有连接的设备的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！