CheckBox was added in API Level 1
A checkbox is a specific type of two-states button that can be either checked or unchecked.
1. Add the below import to the imports section.
import android.widget.CheckBox;
2. Add the below line to the onCreate method. This will create a new CheckBox object named myCheckBox.
CheckBox myCheckBox;
3. Compile and run!
Resources:
http://developer.android.com/reference/android/widget/CheckBox.html