1. Remove @SuppressLint("CustomViewStyleable") in TranslateTabLayout.java
2. Build and see lint error
3. Fix

From: http://tools.android.com/tips/lint-checks

CustomViewStyleable
-------------------
Summary: Mismatched Styleable/Custom View Name

Priority: 6 / 10
Severity: Warning
Category: Correctness

The convention for custom views is to use a declare-styleable whose name
matches the custom view class name. The IDE relies on this convention such
that for example code completion can be offered for attributes in a custom
view in layout XML resource files.

(Similarly, layout parameter classes should use the suffix _Layout.)