.Android文件夹是存放模拟器文件，占用10G到几十个G，
Android Studio 3.5测试成功
1.Close Android Studio if any.
2.Move .android folder (usually at C:\Users\yourusername\.android) to destination drive (e.g. D:\Android)
3.From Windows, go to Control Panel > System > Advanced system settings
4.Go to Advanced tab > Environment Variables.
5.Under System variables, click New… button.
6.Type in the following:
Variable name:ANDROID_SDK_HOME
Variable value:D:\Android
7.Click OK and OK again.
转自：https://www.jianshu.com/p/5b2c44e998bb