drag button calibration

res/xml/preferences.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android">
+	<PreferenceCategory a:title="@string/c_prefs_main_category">
+
+
+		<Preference
+				a:title="@string/c_prefs_drag_button_calibration"
+				a:summary="@string/c_prefs_drag_button_calibration_summary"
+				a:key="dragButtonCalibration"/>
+
+		<CheckBoxPreference
+				a:title="Checkbox Preference"
+				a:defaultValue="false"
+				a:summary="This preference can be true or false"
+				a:key="checkboxPref"/>
+
+	</PreferenceCategory>
+
+</PreferenceScreen>