Fix a view-related crash

                    final WordListPreference pref;

                    if (null != oldPreference

                            && oldPreference.mVersion == version

                            && oldPreference.hasStatus(status)

                            && oldPreference.mLocale.equals(locale)) {

                        // If the old preference has all the new attributes, reuse it. We test

                        // for version and locale because although attributes other than status

                        // need to be the same, others have been tested through the key of the

                        // map. Also, status may differ so we don't want to use #equals() here.

                        // If the old preference has all the new attributes, reuse it. Ideally, we

                        // should reuse the old pref even if its status is different and call

                        // setStatus here, but setStatus calls Preference#setSummary() which needs

                        // to be done on the UI thread and we're not on the UI thread here. We

                        // could do all this work on the UI thread, but in this case it's probably

                        // lighter to stay on a background thread and throw this old preference out.

                        pref = oldPreference;

                        pref.setStatus(status);

                    } else {

                        // Otherwise, discard it and create a new one instead.

                        // TODO: when the status is different from the old one, we need to

                        // animate the old one out before animating the new one in.

                        pref = new WordListPreference(activity, mDictionaryListInterfaceState,

                                mClientId, wordlistId, version, locale, description, status,

                                filesize);

        setSummary(getSummary(status));

    }

    public boolean hasStatus(final int status) {

        return status == mStatus;

    }

    @Override

    public View onCreateView(final ViewGroup parent) {

        final View orphanedView = mInterfaceState.findFirstOrphanedView();

        progressBar.setIds(mClientId, mWordlistId);

        progressBar.setMax(mFilesize);

        final boolean showProgressBar = (MetadataDbHelper.STATUS_DOWNLOADING == mStatus);

        setSummary(getSummary(mStatus));

        status.setVisibility(showProgressBar ? View.INVISIBLE : View.VISIBLE);

        progressBar.setVisibility(showProgressBar ? View.VISIBLE : View.INVISIBLE);