Android Studio在安装命令行工具时是必要的，即使它不是你用来开发应用程序的编辑器。取消选中过时的包选项卡并下载工具就可以了;这应该可以解决许可证问题，你可以回到你最喜欢的IDE(如VS Code)。

混合了Jing Li和caller9的回答，这是我的脚本:

variables:
  ANDROID_COMPILE_SDK: "29"
  ANDROID_BUILD_TOOLS: "29.0.3"
  ANDROID_SDK_TOOLS: "6200805"

before_script:
  - apt-get update --yes
  - apt-get install --yes wget tar unzip lib32stdc++6 lib32z1
  - export ANDROID_HOME=${PWD}android-home
  - install -d $ANDROID_HOME
  - wget --output-document=$ANDROID_HOME/cmdline-tools.zip https://dl.google.com/android/repository/commandlinetools-linux-${ANDROID_SDK_TOOLS}_latest.zip
  - pushd $ANDROID_HOME
  - unzip -d cmdline-tools cmdline-tools.zip
  - popd
  - export PATH=$PATH:${ANDROID_HOME}/cmdline-tools/tools/bin/
  - sdkmanager --version
  - set +o pipefail
  - yes | sdkmanager --sdk_root=${ANDROID_HOME} --licenses
  - set -o pipefail
  - sdkmanager --sdk_root=${ANDROID_HOME} "platforms;android-${ANDROID_COMPILE_SDK}"
  - sdkmanager --sdk_root=${ANDROID_HOME} "platform-tools"
  - sdkmanager --sdk_root=${ANDROID_HOME} "build-tools;${ANDROID_BUILD_TOOLS}"
  - export PATH=$PATH:${ANDROID_HOME}/platform-tools/
  - chmod +x ./gradlew
[...]

Android Studio在安装命令行工具时是必要的，即使它不是你用来开发应用程序的编辑器。取消选中过时的包选项卡并下载工具就可以了;这应该可以解决许可证问题，你可以回到你最喜欢的IDE(如VS Code)。

我在新Mac上下载独立命令行工具(commandlinetools-mac-6200805_latest)时就遇到了这种情况。

基于这里所有的答案，我能够让它像这样工作

# Define ANDROID_HOME, if not defined already
export ANDROID_HOME="~/Library/Android/sdk"

# Create the folder if missing
mkdir -p $ANDROID_HOME

# Let the tool know that it should use that SDK location. 
sdkmanager --list --sdk_root=$ANDROID_HOME

——sdk_root选项的文档说“使用指定的SDK根而不是包含此工具的SDK”。这让我想到，尽管该工具是独立发布的，但它有望成为SDK安装包的一部分。

我们不再为每个命令执行传递参数——sdk_root，而是深入研究真正的原因。

Starting from Android SDK Command-line Tools 1.0.0 (6200805), in contrast to Android SDK 26.1.1 (4333796), the tools directory hierarchy has been changed. Previously it was placed right inside ANDROID_HOME (which is deprecated, we will use the term ANDROID_SDK_ROOT for the rest of the paragraph), now it's still named as tools (the only thing you'll get after unpacking the downloaded commandlinetools zip file), but differently, you have to place it inside a directory called cmdline-tools on your own. The name cmdline-tools comes from its package name, where you can get from listing packages command sdkmanager --list, whose outputs include cmdline-tools;1.0 | 1.0 | Android SDK Command-line Tools.

将tools目录包装到cmdline-tools目录中将使其工作，并帮助您摆脱恼人的——sdk_root参数。但是其他部分呢?

这就是你要改变的。让我解释更多。

The king - sdkmanager lives inside cmdline-tools/tools/bin, you'd better set in PATH environment variable cmdline-tools should not be set as ANDROID_SDK_ROOT. Because later, when updating Android SDK, or installing more packages, the other packages will be placed under ANDROID_SDK_ROOT, but not under cmdline-tools. The final, complete ANDROID_SDK_ROOT directory structure should look like below, consist of quite a few sub-directories: build-tools, cmdline-tools, emulator, licenses, patcher, platform-tools, platforms, system-images. You can easily point out that build-tools and cmdline-tools are siblings, all sit inside the parent ANDROID_SDK_ROOT.

让我简单概括一下:

设置您首选的ANDROID_SDK_ROOT(就像以前一样) 下载并解压commandlinetools zip文件到名为cmdline-tools的目录中，该目录位于ANDROID_SDK_ROOT目录中 将目录$ANDROID_SDK_ROOT/cmdline-tools/tools/bin追加到环境变量PATH后，这样系统就知道在哪里可以找到sdkmanager

更新! ! ! !

自构建6858069 (Android SDK命令行工具3.0)以来，行为再次发生了变化:

After unzipping the package, the top-most directory you'll get is cmdline-tools. Rename the unpacked directory from cmdline-tools to tools, and place it under $ANDROID_SDK_ROOT/cmdline-tools, so now it should look like: $ANDROID_SDK_ROOT/cmdline-tools/tools. And inside it, you should have: NOTICE.txt bin lib source.properties. Actually according to the official Command-Line Tools doc, the tree structure should be android_sdk/cmdline-tools/version/bin/, but I've checked, using version or tools makes no difference here. For your environment variable PATH, I would recommend you to set like this: PATH=$PATH:$ANDROID_SDK_ROOT/cmdline-tools/latest/bin:$ANDROID_SDK_ROOT/cmdline-tools/tools/bin, because after update later, you'll get the latest sdkmanager placed under $ANDROID_SDK_ROOT/cmdline-tools/latest/bin, put it in front will make it higher priority.

这似乎是sdkmanager定位SDK安装文件夹的方式的错误。

一种变通方法是设置标志——sdk_root。您可以将ANDROID_HOME声明移动到更高的位置，然后在后续命令中使用它。

 - export ANDROID_HOME=$PWD/android-sdk-linux
 - yes | android-sdk-linux/tools/bin/sdkmanager --sdk_root=${ANDROID_HOME} --licenses
 - android-sdk-linux/tools/bin/sdkmanager --sdk_root=${ANDROID_HOME} "platform-tools" "platforms;android-${ANDROID_COMPILE_SDK}" >/dev/null

同时，将毛毯许可接收命令移动到第一个命令，清理回滚部分。

奇怪的是，如果你运行sdkmanager——sdk_root=${ANDROID_HOME} "tools"，它会把工具从3.6.0升级到26.1.1,sdkmanager就不再有这个问题了。这个更新需要花费时间和带宽，对于解决方案来说并不是完全必要的。