Tăng khả năng tìm kiếm được ứng dụng trên TV

class VideoDatabase {
    companion object {
        // The columns we'll include in the video database table
        val KEY_NAME = SearchManager.SUGGEST_COLUMN_TEXT_1
        val KEY_DESCRIPTION = SearchManager.SUGGEST_COLUMN_TEXT_2
        val KEY_ICON = SearchManager.SUGGEST_COLUMN_RESULT_CARD_IMAGE
        val KEY_DATA_TYPE = SearchManager.SUGGEST_COLUMN_CONTENT_TYPE
        val KEY_IS_LIVE = SearchManager.SUGGEST_COLUMN_IS_LIVE
        val KEY_VIDEO_WIDTH = SearchManager.SUGGEST_COLUMN_VIDEO_WIDTH
        val KEY_VIDEO_HEIGHT = SearchManager.SUGGEST_COLUMN_VIDEO_HEIGHT
        val KEY_AUDIO_CHANNEL_CONFIG = SearchManager.SUGGEST_COLUMN_AUDIO_CHANNEL_CONFIG
        val KEY_PURCHASE_PRICE = SearchManager.SUGGEST_COLUMN_PURCHASE_PRICE
        val KEY_RENTAL_PRICE = SearchManager.SUGGEST_COLUMN_RENTAL_PRICE
        val KEY_RATING_STYLE = SearchManager.SUGGEST_COLUMN_RATING_STYLE
        val KEY_RATING_SCORE = SearchManager.SUGGEST_COLUMN_RATING_SCORE
        val KEY_PRODUCTION_YEAR = SearchManager.SUGGEST_COLUMN_PRODUCTION_YEAR
        val KEY_COLUMN_DURATION = SearchManager.SUGGEST_COLUMN_DURATION
        val KEY_ACTION = SearchManager.SUGGEST_COLUMN_INTENT_ACTION
        ...
    }
    ...
}

public class VideoDatabase {
    // The columns we'll include in the video database table
    public static final String KEY_NAME = SearchManager.SUGGEST_COLUMN_TEXT_1;
    public static final String KEY_DESCRIPTION = SearchManager.SUGGEST_COLUMN_TEXT_2;
    public static final String KEY_ICON = SearchManager.SUGGEST_COLUMN_RESULT_CARD_IMAGE;
    public static final String KEY_DATA_TYPE = SearchManager.SUGGEST_COLUMN_CONTENT_TYPE;
    public static final String KEY_IS_LIVE = SearchManager.SUGGEST_COLUMN_IS_LIVE;
    public static final String KEY_VIDEO_WIDTH = SearchManager.SUGGEST_COLUMN_VIDEO_WIDTH;
    public static final String KEY_VIDEO_HEIGHT = SearchManager.SUGGEST_COLUMN_VIDEO_HEIGHT;
    public static final String KEY_AUDIO_CHANNEL_CONFIG =
            SearchManager.SUGGEST_COLUMN_AUDIO_CHANNEL_CONFIG;
    public static final String KEY_PURCHASE_PRICE = SearchManager.SUGGEST_COLUMN_PURCHASE_PRICE;
    public static final String KEY_RENTAL_PRICE = SearchManager.SUGGEST_COLUMN_RENTAL_PRICE;
    public static final String KEY_RATING_STYLE = SearchManager.SUGGEST_COLUMN_RATING_STYLE;
    public static final String KEY_RATING_SCORE = SearchManager.SUGGEST_COLUMN_RATING_SCORE;
    public static final String KEY_PRODUCTION_YEAR = SearchManager.SUGGEST_COLUMN_PRODUCTION_YEAR;
    public static final String KEY_COLUMN_DURATION = SearchManager.SUGGEST_COLUMN_DURATION;
    public static final String KEY_ACTION = SearchManager.SUGGEST_COLUMN_INTENT_ACTION;
...

companion object {
    ....
    private fun buildColumnMap(): MapS<tring, String> {
        return mapOf(
          KEY_NAME to KEY_NAME,
          KEY_DESCRIPTION to KEY_DESCRIPTION,
          KEY_ICON to KEY_ICON,
          KEY_DATA_TYPE to KEY_DATA_TYPE,
          KEY_IS_LIVE to KEY_IS_LIVE,
          KEY_VIDEO_WIDTH to KEY_VIDEO_WIDTH,
          KEY_VIDEO_HEIGHT to KEY_VIDEO_HEIGHT,
          KEY_AUDIO_CHANNEL_CONFIG to KEY_AUDIO_CHANNEL_CONFIG,
          KEY_PURCHASE_PRICE to KEY_PURCHASE_PRICE,
          KEY_RENTAL_PRICE to KEY_RENTAL_PRICE,
          KEY_RATING_STYLE to KEY_RATING_STYLE,
          KEY_RATING_SCORE to KEY_RATING_SCORE,
          KEY_PRODUCTION_YEAR to KEY_PRODUCTION_YEAR,
          KEY_COLUMN_DURATION to KEY_COLUMN_DURATION,
          KEY_ACTION to KEY_ACTION,
          BaseColumns._ID to ("rowid AS " + BaseColumns._ID),
          SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID to ("rowid AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID),
          SearchManager.SUGGEST_COLUMN_SHORTCUT_ID to ("rowid AS " + SearchManager.SUGGEST_COLUMN_SHORTCUT_ID)
        )
    }
}

...
  private static HashMap<String, String> buildColumnMap() {
    HashMap<String, String> map = new HashMap<String, String>();
    map.put(KEY_NAME, KEY_NAME);
    map.put(KEY_DESCRIPTION, KEY_DESCRIPTION);
    map.put(KEY_ICON, KEY_ICON);
    map.put(KEY_DATA_TYPE, KEY_DATA_TYPE);
    map.put(KEY_IS_LIVE, KEY_IS_LIVE);
    map.put(KEY_VIDEO_WIDTH, KEY_VIDEO_WIDTH);
    map.put(KEY_VIDEO_HEIGHT, KEY_VIDEO_HEIGHT);
    map.put(KEY_AUDIO_CHANNEL_CONFIG, KEY_AUDIO_CHANNEL_CONFIG);
    map.put(KEY_PURCHASE_PRICE, KEY_PURCHASE_PRICE);
    map.put(KEY_RENTAL_PRICE, KEY_RENTAL_PRICE);
    map.put(KEY_RATING_STYLE, KEY_RATING_STYLE);
    map.put(KEY_RATING_SCORE, KEY_RATING_SCORE);
    map.put(KEY_PRODUCTION_YEAR, KEY_PRODUCTION_YEAR);
    map.put(KEY_COLUMN_DURATION, KEY_COLUMN_DURATION);
    map.put(KEY_ACTION, KEY_ACTION);
    map.put(BaseColumns._ID, "rowid AS " +
            BaseColumns._ID);
    map.put(SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID, "rowid AS " +
            SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID);
    map.put(SearchManager.SUGGEST_COLUMN_SHORTCUT_ID, "rowid AS " +
            SearchManager.SUGGEST_COLUMN_SHORTCUT_ID);
    return map;
  }
...

fun query(uri: Uri, projection: Array<String>, selection: String, selectionArgs: Array<String>,
        sortOrder: String): Cursor {
    // Use the UriMatcher to see what kind of query we have and format the db query accordingly
    when (URI_MATCHER.match(uri)) {
        SEARCH_SUGGEST -> {
            Log.d(TAG, "search suggest: ${selectionArgs[0]} URI: $uri")
            if (selectionArgs == null) {
                throw IllegalArgumentException(
                        "selectionArgs must be provided for the Uri: $uri")
            }
            return getSuggestions(selectionArgs[0])
        }
        else -> throw IllegalArgumentException("Unknown Uri: $uri")
    }
}

private fun getSuggestions(query: String): Cursor {
    val columns = arrayOf<String>(
            BaseColumns._ID,
            VideoDatabase.KEY_NAME,
            VideoDatabase.KEY_DESCRIPTION,
            VideoDatabase.KEY_ICON,
            VideoDatabase.KEY_DATA_TYPE,
            VideoDatabase.KEY_IS_LIVE,
            VideoDatabase.KEY_VIDEO_WIDTH,
            VideoDatabase.KEY_VIDEO_HEIGHT,
            VideoDatabase.KEY_AUDIO_CHANNEL_CONFIG,
            VideoDatabase.KEY_PURCHASE_PRICE,
            VideoDatabase.KEY_RENTAL_PRICE,
            VideoDatabase.KEY_RATING_STYLE,
            VideoDatabase.KEY_RATING_SCORE,
            VideoDatabase.KEY_PRODUCTION_YEAR,
            VideoDatabase.KEY_COLUMN_DURATION,
            VideoDatabase.KEY_ACTION,
            SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID
    )
    return videoDatabase.getWordMatch(query.toLowerCase(), columns)
}

@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
        String sortOrder) {
    // Use the UriMatcher to see what kind of query we have and format the db query accordingly
    switch (URI_MATCHER.match(uri)) {
        case SEARCH_SUGGEST:
            Log.d(TAG, "search suggest: " + selectionArgs[0] + " URI: " + uri);
            if (selectionArgs == null) {
                throw new IllegalArgumentException(
                        "selectionArgs must be provided for the Uri: " + uri);
            }
            return getSuggestions(selectionArgs[0]);
        default:
            throw new IllegalArgumentException("Unknown Uri: " + uri);
    }
}

private Cursor getSuggestions(String query) {
    query = query.toLowerCase();
    String[] columns = new String[]{
        BaseColumns._ID,
        VideoDatabase.KEY_NAME,
        VideoDatabase.KEY_DESCRIPTION,
        VideoDatabase.KEY_ICON,
        VideoDatabase.KEY_DATA_TYPE,
        VideoDatabase.KEY_IS_LIVE,
        VideoDatabase.KEY_VIDEO_WIDTH,
        VideoDatabase.KEY_VIDEO_HEIGHT,
        VideoDatabase.KEY_AUDIO_CHANNEL_CONFIG,
        VideoDatabase.KEY_PURCHASE_PRICE,
        VideoDatabase.KEY_RENTAL_PRICE,
        VideoDatabase.KEY_RATING_STYLE,
        VideoDatabase.KEY_RATING_SCORE,
        VideoDatabase.KEY_PRODUCTION_YEAR,
        VideoDatabase.KEY_COLUMN_DURATION,
        VideoDatabase.KEY_ACTION,
        SearchManager.SUGGEST_COLUMN_INTENT_DATA_ID
    };
    return videoDatabase.getWordMatch(query, columns);
}
...