how to return to the previous PrefenenceScreen from nested PreferenceScreen without press the back button

Question

I have write a multi-level Preferences in program with xml File. and i want to know how to return to the previous level without press the back button. how to write some code

Answer 1

I had the same problem and solve it thanks to Xuelong and getDialog() but without needing to manage onPreferenceTreeClick().

1. You need to keep an instance (myPreferenceScreen) of the PreferenceScreen you want to return from
2. You have to give him a key in XML
3. Retrieve the instance with findPreference("MyPreferenceScreenKey");
4. Once you have to return , use this method : myPreferenceScreen.getDialog().dismiss()

You will then return from where you came from.

Here is a epurated example :

Xml file :

Java file :

public class ParanoidPreferenceManager extends PreferenceActivity {
 ListPreference contactList;
 EditTextPreference foo1;
 PreferenceScreen mySubScreenKey;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);

     //Load XML preference file
     addPreferencesFromResource(R.xml.preferences); 


    contactList = (ListPreference) findPreference("contactList");
    foo1=  (EditTextPreference) findPreference("foo1");
    screenContact = (PreferenceScreen) findPreference("screenAddContact");

    foo1.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

        @Override
        public boolean onPreferenceChange(Preference preference, Object newValue) {
                mySubScreenKey.getDialog().dismiss();
                return false;       
        }
    }); 
}
}

That's it

Sorry for presentation, this is my first post on this site.

Bye dudes