title: Android - Using PreferenceScreen to display and save settings to/from ContentProvider
body: <p>I have my own custom Content Provider that loads a database which contains the settings information for my application.</p>
  
  <p>I load the settings from the ContentProvider on the creation of my Settings activity.</p>
  
  <p>My Settings activity is made up of a PreferenceScreen and Dialog based EditText's.</p>
  
  <p>The following code shows how I use the preference screen and edit texts.</p>
  
  <p>So as you can see from the first image this works and displays the menu with the information underneath.</p>
  
  <p>The problem is in image two, when I click on a choice in the menu the dialog pops up but it is empty, I would like to be able to load the data from my content provider into the edit text in the dialog, so in image one it shows "Donal" as the user name so in image two "Donal" should also appear in the edit text in the dialog.</p>
  
  <p>I would also like to be able to listen to the OK button in the dialog so when a user changes a setting I can update the data in my content provider.</p>
  
  <p>Can anyone help me with what I'm trying to do?</p>
  
  <hr>
  
  <p><strong>Code</strong></p>
  
  <pre><code>public class PreferencesApp extends PreferenceActivity {
  
  String name;
  EditTextListener etl;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
  
      loadSettingsFromProvider();
      etl = new EditTextListener(this);
  
      setPreferenceScreen(createPreferenceHierarchy());
  }
  
  private PreferenceScreen createPreferenceHierarchy() {
      // Root
      PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);
  
      // Dialog based preferences
      PreferenceCategory dialogBasedPrefCat = new PreferenceCategory(this);
      dialogBasedPrefCat.setTitle(R.string.dialog_based_preferences);
      root.addPreference(dialogBasedPrefCat);
  
      // Edit text preference
      EditTextPreference editTextPref = new EditTextPreference(this);
      editTextPref.setDialogTitle(R.string.dialog_title_edittext_preference);
      editTextPref.setKey("edittext_preference");
      editTextPref.setTitle(R.string.title_edittext_preference);
      editTextPref.setSummary(name);
      dialogBasedPrefCat.addPreference(editTextPref);
  
  
      return root;
  }
  
  public class EditTextListener extends EditTextPreference{
  
      public EditTextListener(Context context){
  
          super(context);
  
      }
  
      @Override
      //When the dialog is closed, perform the relevant actions
      protected void onDialogClosed(boolean positiveResult) {
  
          if (positiveResult) {
           String text=getEditText().getText().toString();
           Log.d("DIALOG CLOSED", "OK");
           }
          else {
           // cancel hit
           Log.d("DIALOG CLOSED", "CANCEL");
          }
      }       
  }
  </code></pre>