Android app set the menu to bold on click

I am looking for a freelancer who are expert in java. I am working on android app that when I click on the expandablelistview menu, I want to set the text to normal and set the other text to bold, example: Set the dashboard text from bold to normal and set the Traffic Source text to bold. When you done please send me the apk demo. I will not hire unless you send me the demo. I will pay $30 after when you are done. No timewaster please, anyone who want my time will be blocked. Thanks for your interest.