为什么 Flutter Doctor 不能作为我的电脑工作？

Question

我运行了 Flutter 医生命令，但它显示我没有安装 Android Studio。 并且还显示 Android 未找到这样的被许可人..错误是 -

    C:\Users\Arpan Dey>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 2.0.6, on Microsoft Windows [Version 10.0.19042.631], locale en-US)
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[X] Chrome - develop for the web (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[!] Android Studio (not installed)
[√] Connected device (1 available)

! Doctor found issues in 3 categories.

但我已经安装了 Android Studio 和 Flutter & Dart 插件...

另一个问题是当我运行 flutter doctor --android-licenses 命令时

它的表现——

C:\Users\Arpan Dey>flutter doctor --android-licenses
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
        at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
        at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
        at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
        at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
        ... 5 more

很伤心——

此外，当我在 android 工作室中使用 Android 仿真器运行默认 Flutter 应用程序时......它没有运行......

Answer 1

打开 Android Studio 和 go 到 SDK 管理器。 After that explore Appearance & Behaviour > go to Android SDK > Click on SDK Tools and install Android Command Line Tools.

如果仿真器未运行，请检查您是否在同一个 SDK 工具中安装了 Android 仿真器和 Intel x86 仿真器加速器（HAXM 安装程序）。

之后运行flutter doctor --android-licenses 。 它会起作用的。