ANDROID_SDK_HOME在Windows 8 x64上也适用 也找到所有的位置(在我的情况下，它是d:\.android)并删除它。你不再需要它了。

In Windows 10 I had that problem because My C Drive was getting full and I had needed free Space, AVD folder had 14 gig space so I needed to move that folder to another driver, first answer not work for Me so I tested another way to fix it this problem, I make a picture for you if you have the same problem, you don't need to move all of the files in .android folder to another drive (this way not work) just move avd folders in ....android\avd to another drive and open .ini files and change avd folder path from that file to the new path. Like this image:

我希望这对你有用。

注意:小心在ini文件的路径之前和之后有一个你看不到的单独的字符，如果你删除了那个字符，它就不起作用了

我关注了https://www.mysysadmintips.com/windows/clients/761-move-android-studio-avd-folder-to-a-new-location。

Start copying a folder "C:\Users\user\.android\avd" to "D:\Android\.android\avd" (or something else). Close Android Studio and running emulators. Press Win + Break and open Advanced System Settings. Then press Environment Variables. Add a user variable ANDROID_SDK_HOME. (I didn't experiment with ANDROID_AVD_HOME.) In Variable value field write D:\Android. If you also moved SDK to another folder, change ANDROID_HOME (I forgot to change it and some emulators didn't launch, see https://stackoverflow.com/a/57408085/2914140). Wait until the folder will finish copying and start Android Studio. Open Android Virtual Device Manager and see a list of emulators. If you don't see emulators and they existed, then probably you entered wrong path into user variable value in step 3. In this case close AS, change the variable and open AS again. Start any emulator. It will try to restore it's state, but it sometimes fails. A black screen can appear instead of Android wallpaper. In this case you can: a. Restart your emulator. To do this close running emulator, then in AVD Manager click Cold Boot Now.

b.如果这没有帮助，打开模拟器设置，在文件“D:\Android\. Android\ avd\Pixel_API_27.ini”中找到。

更改路径到一个新的AVD文件夹。重新启动模拟器。

删除旧的AVD文件夹从“C:\Users\user\.android\ AVD”

1 -移动AVD到新文件夹

2 - start菜单>控制面板>系统>高级系统设置(左侧)>环境变量 添加一个新的用户变量: 变量名:ANDROID_AVD_HOME 变量值:您选择的目录的路径

3 -更改文件。ini设置新文件夹。

4 -打开Android Studio

WORKS - Windows 2010

更多说明:https://developer.android.com/studio/command-line/variables

进入Android tools目录。编辑android.bat命令文件。在命令文件的末尾，找到类似于

call %java_exe% -Djava.ext.dirs=%java_ext_dirs% -Dcom.android.sdkmanager.toolsdir="%tools_dir%" -Dcom.android.sdkmanager.workdir="%work_dir%" -jar %jar_path% %*

和替换

call %java_exe%

with

call %java_exe% -Duser.home={your_prefer_dir}

{your_prefer_dire}是您的首选目录，不带大括号，但添加双引号，

如。

call %java_exe% -Duser.home="E:\Program Files (x86)\android-sdk-windows"

添加一个新的用户环境变量(Windows 7): 开始菜单>控制面板>系统>高级系统设置(左侧)>环境变量 添加一个新的用户变量(在顶部)，指向你的主用户目录:

变量名称:ANDROID_SDK_HOME变量值: 您选择的目录的路径

AVD管理器将使用这个目录保存它的.android目录。

对于那些可能感兴趣的人，我在博客中谈到了我第一次涉足Android开发…… Android“Hello World”:一个悲惨的故事

或者，您也可以使用快速环境编辑器来设置环境变量。