Android：添加搜索最近建议和自定义建议

Question

我想为搜索小部件添加一些建议，但我不知道如何显示最近和自定义的建议。下面的片段给了我一个

CursorIndexOutOfBoundsException：Requested column：4，＃of columns：4

有什么想法吗？

我的自定义建议代码

@Override
public Cursor query(Uri uri, String[] projection, String selection,
                    String[] selectionArgs, String sortOrder) {

    List<String> suggestions = new ArrayList<String>();
    suggestions.add("iphone");
    Cursor recentCursor = super.query(uri, projection, selection, selectionArgs,
            sortOrder);
    MatrixCursor cursor = new MatrixCursor(new String[] { BaseColumns._ID,
            SearchManager.SUGGEST_COLUMN_TEXT_1,
            SearchManager.SUGGEST_COLUMN_INTENT_DATA,
            SearchManager.SUGGEST_COLUMN_QUERY } );
    for (int i = 0; i < suggestions.size(); ++i) {
        String suggestion = suggestions.get(i);
        Object[] row = { Integer.toString(i),
                suggestion,
                suggestion, suggestion };
        cursor.addRow(row);
    }

    Cursor[] cursors = new Cursor[] { recentCursor, cursor};
    return new MergeCursor(cursors);
}

Answer 1

recentCursor有第5列是SUGGEST_COLUMN_FORMAT，所以你不能将5列合并到4

Answer 2

我相信您忘记了将SUGGEST_COLUMN_ICON_1列添加到光标。