volley is new network lib.
・apache antをinstallする
brew install ant
または、
https://ant.apache.org/bindownload.cgi
volleyをclone
git clone https://android.googlesource.com/platform/frameworks/volley
・cd volleyで下記をantを実行
android update project -p .
ant jar
[jar] Building jar: /Users/mknod/git/volley/bin/volley.jar
・jarをAndroidのlibsへコピー