Android Setting 设置项添加到快速搜索

原生Android系统上适配了setting 快速搜索设置项的问题，主要通过一下两点就可以实现：

1. TestSettings.java
   TestSettings 实现 Indexable

    /**
     * For Search.
     */
    public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
            new BaseSearchIndexProvider() {

            @Override
            public List getRawDataToIndex(Context context, boolean enabled) {
                final List result = new ArrayList();

                SearchIndexableRaw data = new SearchIndexableRaw(context);
                data.title = context.getString(R.string.parallelspace_title111);
                data.screenTitle = context.getString(R.string.parallelspace_title111);
                result.add(data);
                return result;
            }
        };

1. SearchIndexableResources.java (位于androidsourcecode/android7.0/packages/apps/Settings/src/com/android/settings/search ）

     SearchIndexableResources 里添加：
   addIndex(ParallelSpaceSettings.class, NO_DATA_RES_ID,
                R.drawable.ic_settings_notifications);