Getting Radiobutton Cannot Be Resolved To A Type

I am trying to build a radio button input activity. I have done whatever described in http://developer.android.com/guide/topics/ui/controls/radiobutton.html But I am getting 'Radi

Solution 1:

Add the following line to the top of your class, along with the other imports:

import android.widget.RadioButton;

For future reference, you can automatically have Eclipse add the imports by pressing ctrl-shift-O (Windows) or command-shift-O (Mac)