How to show and hide preferences on Android dynamically?

From a PreferenceActivity call

Preference somePreference = findPreference(SOME_PREFERENCE_KEY);
PreferenceScreen preferenceScreen = getPreferenceScreen();
preferenceScreen.removePreference(somePreference);

you can later call:

preferenceScreen.addPreference(somePreference);

The only a little bit tricky part is getting the order correct when adding back in. Look at PreferenceScreen documentation, particularly it’s base class, PreferenceGroup for details.

Note: The above will only work for immediate children of a PreferenceScreen. If there is a PreferenceCategory in between, you need to remove the preference from its parent PreferenceCategory, not the PreferenceScreen. First to ensure the PreferenceCategory has an android:key attribute set in the XML file. Then:

Preference somePreference = findPreference(SOME_PREFERENCE_KEY);
PreferenceCategory preferenceCategory = (PreferenceCategory) findPreference(SOME_PREFERENCE_CATEGORY_KEY);
preferenceCategory.removePreference(somePreference);

and:

preferenceCategory.addPreference(somePreference);