Java Code Examples for androidx.preference.PreferenceGroup#getPreferenceCount()

static void tintIcons(final Context c, Preference preference)
{
    if (preference instanceof PreferenceGroup)
    {
        PreferenceGroup group = ((PreferenceGroup) preference);
        Utils.setDrawableColorAttr(c, group.getIcon(), android.R.attr.textColorSecondary);
        for (int i = 0; i < group.getPreferenceCount(); i++)
        {
            tintIcons(c, group.getPreference(i));
        }
    }
    else
    {
        Utils.setDrawableColorAttr(c, preference.getIcon(), android.R.attr.textColorSecondary);
    }
}
 

/**
 * Restores the default preferences, which are contained by a specific preference group.
 *
 * @param preferenceGroup
 *         The preference group, whose preferences should be restored, as an instance of the
 *         class {@link PreferenceGroup}. The preference group may not be null
 * @param sharedPreferences
 *         The shared preferences, which should be used to restore the preferences, as an
 *         instance of the type {@link SharedPreferences}. The shared preferences may not be
 *         null
 */
private void restoreDefaults(@NonNull final PreferenceGroup preferenceGroup,
                             @NonNull final SharedPreferences sharedPreferences) {
    for (int i = 0; i < preferenceGroup.getPreferenceCount(); i++) {
        Preference preference = preferenceGroup.getPreference(i);

        if (preference instanceof PreferenceGroup) {
            restoreDefaults((PreferenceGroup) preference, sharedPreferences);
        } else if (preference.getKey() != null && !preference.getKey().isEmpty()) {
            Object oldValue = sharedPreferences.getAll().get(preference.getKey());

            if (notifyOnRestoreDefaultValueRequested(preference, oldValue)) {
                sharedPreferences.edit().remove(preference.getKey()).apply();
                preferenceGroup.removePreference(preference);
                preferenceGroup.addPreference(preference);
                Object newValue = sharedPreferences.getAll().get(preference.getKey());
                notifyOnRestoredDefaultValue(preference, oldValue, newValue);
            } else {
                preferenceGroup.removePreference(preference);
                preferenceGroup.addPreference(preference);
            }

        }
    }
}
 

/**
 * Since the "%s" summary is currently broken, this sets the preference change listener for all
 * {@link ListPreference} views to fill in the summary with the current entry value.
 */
private void fixListSummaries(PreferenceGroup group) {
  if (group == null) {
    return;
  }

  final int count = group.getPreferenceCount();

  for (int i = 0; i < count; i++) {
    final Preference preference = group.getPreference(i);

    if (preference instanceof PreferenceGroup) {
      fixListSummaries((PreferenceGroup) preference);
    } else if (preference instanceof ListPreference) {
      // First make sure the current summary is correct, then set the
      // listener. This is necessary for summaries to show correctly
      // on SDKs < 14.
      preferenceChangeListener.onPreferenceChange(
          preference, ((ListPreference) preference).getValue());

      preference.setOnPreferenceChangeListener(preferenceChangeListener);
    }
  }
}
 

/** Collects all preset-controlled preferences. */
private ArrayList<Preference> collectDetailedPreferences() {
  ArrayList<Preference> detailedPrefs = new ArrayList<Preference>();
  PreferenceGroup prefGroup =
      (PreferenceGroup) findPreference(R.string.pref_verbosity_category_preset_settings_key);
  if (prefGroup == null) {
    return detailedPrefs;
  }

  // For each preference... collect
  for (int p = 0; p < prefGroup.getPreferenceCount(); p++) {
    Preference preference = prefGroup.getPreference(p);
    if (preference != null) {
      detailedPrefs.add(preference);
    }
  }
  return detailedPrefs;
}
 

private void setAllPreferencesToAvoidHavingExtraSpace(Preference preference) {
    preference.setIconSpaceReserved(false);
    if (preference instanceof PreferenceGroup) {
        PreferenceGroup preferenceGroup = ((PreferenceGroup) preference);
        for (int i = 0; i < preferenceGroup.getPreferenceCount(); i++) {
            setAllPreferencesToAvoidHavingExtraSpace(preferenceGroup.getPreference(i));
        }
    }
}
 

private static void tintIcons(final Context c, Preference preference)
{
    if (preference instanceof PreferenceGroup)
    {
        PreferenceGroup group = ((PreferenceGroup) preference);
        for (int i = 0; i < group.getPreferenceCount(); i++)
        {
            tintIcons(c, group.getPreference(i));
        }
    }
    else
    {
        CompatUtils.setDrawableColorAttr(c, preference.getIcon(), android.R.attr.textColorSecondary);
    }
}
 

private void setAllPreferencesToAvoidHavingExtraSpace(Preference preference){
  if (preference != null){
    preference.setIconSpaceReserved(false);
    if (preference instanceof PreferenceGroup){
      PreferenceGroup group =  ((PreferenceGroup) preference);
      int count = group.getPreferenceCount();
      for (int i = 0; i < count; i++){
        setAllPreferencesToAvoidHavingExtraSpace(group.getPreference(i));
      }
    }
  }
}
 

private static void hidePreferences(PreferenceGroup root, Set<String> preferenceKeysToBeHidden) {
  for (int i = 0; i < root.getPreferenceCount(); i++) {
    Preference preference = root.getPreference(i);
    if (preferenceKeysToBeHidden.contains(preference.getKey())) {
      root.removePreference(preference);
      i--;
    } else if (preference instanceof PreferenceGroup) {
      hidePreferences((PreferenceGroup) preference, preferenceKeysToBeHidden);
    }
  }
}
 

private static void tintIcons(Preference preference, int color) {
    if (preference instanceof PreferenceGroup) {
        PreferenceGroup group = ((PreferenceGroup) preference);
        for (int i = 0; i < group.getPreferenceCount(); i++) {
            tintIcons(group.getPreference(i), color);
        }
    } else {
        Drawable icon = preference.getIcon();
        if (icon != null) {
            DrawableCompat.setTint(icon, color);
        }
    }
}