Step 1) Download the SDK for Android.
Step 2) unzip android-sdk (whatever downloaded)
Step 3) In OS X, by default there is no /opt
directory. you obviously have to create it. Run the following command.
sudo mkdir /opt
Step 4) Run the following command to enter the /opt
directory.
cd /opt
Step 5) Run the following command to create a link to android-sdk. Suppose you have android-sdk
located in the Applications section
sudo ln -s /Applications/android-sdk-macosx/ android-sdk
Step 6) enter into the directory android-sdk / tools
cd /opt/android-sdk/tools/
Step 7) or directly enter the following command into the terminal.
/Applications/android-sdk-macosx/tools/android
Step 8) select the necessary packages and download them. Here is an example screen.

Open this URL - http://developer.appcelerator.com/question/32161/problem-with-the-android-sdk-installation-in-titanium . They posted a similar QA there.
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