WA State Labor Industries Info

I get the data from Washington State Dept. of Labor & Industries website http://www.lni.wa.gov/ .
This app is not Washington State Dept. of Labor & Industries.
Labor & Industries data categorized by "Safety & Health" ,"Claims & Insurance" , "Workplace Rights" and "Trades & Licensing".
This app has three activities. The first or main activity shows four buttons.
The buttons are "Safety & Health" ,"Claims & Insurance" , "Workplace Rights" and "Trades & Licensing".
The user clicks "Safety & Health" button the app shows all "Safety & Health" topics by Alphabetical order (A-Z).
The user clicks other buttons("Claims & Insurance" , "Workplace Rights" or "Trades & Licensing") the app shows by categories.