Android Gets PreferenceActivity Preference

Question

I would like to get a View instance that is used to display a specific Preference in my PreferenceActivity, so I can change its properties, for example:

public class SettingsActivity extends PreferenceActivity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preference); Preference pref = findPreference("key"); pref.getView().setVisibility(View.GONE); //not necessarily setVisibility, i hope you get my point } } 

I found this method only: getView (view convertView, parent group of ViewGroup) . But it seems confused to me that if I want to get an idea of ​​my preferences, I need to provide view and viewGroup as parameters

Can someone explain how to use this method, or tell me another method to get a view from my Preference instance.

PS: if possible, I would prefer NOT to extend the preference class, but I don't mind if necessary

Answer 1

I'm not sure how to get the view for preference, but if you want to remove the view from the screen (set the visibility to View.gone), you can use the following:

getPreferenceScreen (). RemovePreference (thePreference)

Answer 2

PreferenceActivity inherits from the ListActivity class. ListActivity has a method called getListView() that returns a ListView that displays your settings.

EDIT: Here is the code in my formatted comment:

 getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() { // ... put listener code here }); 

Answer 3

To get an idea of ​​the desired preference, you can use this:

 @Override public void onWindowFocusChanged(boolean hasFocus) { super.onWindowFocusChanged(hasFocus); Preference preference=findPreference("preferenceKey"); View preferenceView=getListView().getChildAt(preference.getOrder()); //Do your stuff } 

Note: You cannot do this in the onCreate method, because it will throw a NullPointerException .