Need to pick contact from a dialog preference

I would like to add a preference setting that uses an ACTION_PICK intent. My goal is to acquire the phone number of a contact in my phone by using a preference. Is this possible?

I can run this code from my activity but I discovered I cannot run it from a class that extends DialogPreference.

Intent intentContact = new Intent(Int开发者_如何学编程ent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI); 
startActivityForResult(intentContact, PICK_CONTACT); 

Or is there a way to start a new Activity from a Preference? Then that Activity could execute the above two lines of code?

    // Get Custom contact Pref
    Preference customContact = (Preference)findPreference("custom_contact");
    customContact.setOnPreferenceClickListener(new OnPreferenceClickListener() {

        @Override
        public boolean onPreferenceClick(Preference preference) {
            Intent i = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
            startActivityForResult(i, PICK_CONTACT);
            return true;
        }
    });

You have to define the contact preference as "Preference ..." in preferences.xml, if you use "EditTextPreference..." the text edit dialog is shown, and this is not convenient in this case.