How to use toggle/switch button in preference activity

I looked around but couldn't find a single tutorial that tells me how to use the switchpreference in my preference activity and in my main activity. I want to know how to implement it in my application using sharedpreference. Sample code would be appreciated. Thanks in advance

preference.xml:

<SwitchPreference
    android:key="test"
    android:title="Test" />

PreferenceActivity:

public class TestPrefActivity extends PreferenceActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.sample);
    }
}

Register the shared preference object for the changes

    SharedPreferences sharedPrefs = PreferenceManager
            .getDefaultSharedPreferences(MainActivity.this);
    sharedPrefs.registerOnSharedPreferenceChangeListener(new OnSharedPreferenceChangeListener() {
        @Override
        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
            boolean test = sharedPreferences.getBoolean("test", false);
            Log.e(TAG, "Value:" + test);
        }
    });