android 4.1下载

• Make sure you have a bin/ directory in your home directory, and that it is included in your path:

  $ mkdir ~/bin $ PATH=~/bin:$PATH

• Download the Repo script and ensure it is executable:

  $ curl > ~/bin/repo $ chmod a+x ~/bin/repo
  
• 此时可能会提示链接不上，则运行如下命令替代：

• curl > ~/bin/repo

• Create an empty directory to hold your working files. If you're using MacOS, this has to be on a case-sensitive filesystem. Give it any name you like:

  $ mkdir WORKING_DIRECTORY $ cd WORKING_DIRECTORY

• Run repo init to bring down the latest version of Repo with all its most recent bug fixes. You must specify a URL for the manifest, which specifies where the various repositories included in the Android source will be placed within your working directory.

  $ repo init -u

  To check out a branch other than "master", specify it with -b:

  $ repo init -u -b android-4.1.1_r1