无法在cordova 3.3中添加android平台

我尝试通过以下方式添加android平台:

$ cordova platform add android

我明白了:

    Creating android project...

/usr/local/lib/node_modules/cordova/node_modules/q/q.js:126
                    throw e;
                          ^
Error: An error occured during creation of android sub-project. 

/Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:126
                    throw e;
                          ^
Error: The command "android" failed. Make sure you have the latest Android SDK installed, and the "android" command (inside the tools/ folder) is added to your path.
    at /Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/lib/check_reqs.js:85:29
    at _rejected (/Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:808:24)
    at /Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:834:30
    at Promise.when (/Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:1079:31)
    at Promise.promise.promiseDispatch (/Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:752:41)
    at /Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:574:44
    at flush (/Users/jannisportmann/.cordova/lib/android/cordova/3.3.0/bin/node_modules/q/q.js:108:17)
    at process._tickCallback (node.js:415:13)

    at /usr/local/lib/node_modules/cordova/src/platform.js:244:30
    at ChildProcess.exithandler (child_process.js:641:7)
    at ChildProcess.EventEmitter.emit (events.js:98:17)
    at maybeClose (child_process.js:735:16)
    at Socket. (child_process.js:948:11)
    at Socket.EventEmitter.emit (events.js:95:17)
    at Pipe.close (net.js:466:12)

我在.bash_profile中指定了SDK的路径,还有什么我需要做的吗？

谢谢你的回答!