How to add a Library Project to a android project?

1. File->New->Other
2. Select Android Project
3. Select "Create Project from existing source"
4. Click "Browse..." button and navigate to johannilsson-android-actionbar\actionbar
5. Finish (Now action bar project in your workspace)
6. Right-click on your project -> Properties
7. In Android->Library section click Add
8. select recently added project -> Ok
9. that's it!

Now you can use it

Checkout this documentation on how to reference a library project in eclipse.

From the link above:

1. In the Package Explorer, right-click the dependent project and select Properties.
2. In the Properties window, select the "Android" properties group at left and locate the Library properties at right.
3. Click Add to open the Project Selection dialog.
4. From the list of available library projects, select a project and click OK.
5. When the dialog closes, click Apply in the Properties window.
6. Click OK to close the Properties window.

Plus to the "best answer", at step 8, if you don't see the project, go to the project what you would like to add as a library and

• open 'project.properties'
• add 'android.library=true'

and you can again follow the instruction and you should see the desirable project.