Find file name strings.xml in res\value folder in your package explorer... add following line in this file
<string-array name="list"></string-array>
Your Final file look like
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">Muzafar Khan</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string-array name="list"></string-array>
Now save your project... and enjoy :)