问题 For my Ubuntu machine, I downloaded the latest version of Android SDK from this page. After extracting the downloaded .tgz file, I was trying to search for installation instructions and found: To get started on Linux: Unpack the .zip file you've downloaded. The SDK files are download separately to a user-specified directory. Make a note of the name and location of the SDK directory on your system—you will need to refer to the SDK directory later when using the SDK tools from the command line.