如何修复颤振中的“Android 许可证状态未知”

Question

我的颤振医生 -v 结果：

[?] Flutter (Channel stable, v1.0.0, on Microsoft Windows [Version 10.0.17134.472], locale fa-IR)
    • Flutter version 1.0.0 at C:\Android\flutter
    • Framework revision 5391447fae (6 weeks ago), 2018-11-29 19:41:26 -0800
    • Engine revision 7375a0f414
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[!] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at c:\Android\android-sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 27.0.3
    • ANDROID_HOME = C:\Android\android-sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)
    X Android license status unknown.

[?] Android Studio (version 3.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 29.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b02)

[?] Connected device (1 available)
    • HUAWEI CUN U29 • CCMBBCB6C0153603 • android-arm • Android 5.1 (API 22)

运行时：

flutter doctor --android-licenses

给我这个结果：

A newer version of the Android SDK is required. To update, run:
c:\Android\android-sdk\tools\bin\sdkmanager --update 

当更新 sdkmanager 向我显示此错误时：

 Exception in thread "main" java.lang.NoSuchFieldError: FN_AAPT2
        at com.android.sdklib.BuildToolInfo.<init>(BuildToolInfo.java:362)

我该如何解决这个挑战？

Answer 1

我通过安装命令行工具解决了这个问题。

然后重新运行

flutter doctor --android-licenses

Answer 2

我遵循了这些步骤。它对我有用。

1. 转到环境变量并添加ANDROID_HOME了一个变量值： C:\Users\%username%\AppData\Local\Android\Sdk

2. 然后我JAVA_HOME用这个变量值： C:\Program Files\Android\Android Studio\jre

3. 然后我的路径与这个变量值： C:\Users\%username%\flutter\bin

4. 然后我运行了以下命令

   flutter doctor
   

5. 得到 Doctor summary 的输出（要查看所有详细信息，请运行flutter doctor -v）：

   [?] Flutter (Channel beta, v0.2.3, on Microsoft Windows [Version 10.0.16299.309], 
   locale en-US)
   [!] Android toolchain - develop for Android devices (Android SDK 27.0.3)
   ! Some Android licenses not accepted.  To resolve this, run: flutter doctor -- 
   android-licenses
   [?] Android Studio (version 3.1)
   [?] Connected devices (1 available)
   
   ! Doctor found issues in 1 category.
   

6. 然后我跑了

   flutter doctor --android-licenses
   

   并接受所有条款和条件 (y)

Answer 3

卸载 Android Studio 或 Android SDK。重新安装它。