Question

我创建了一个自定义DBAdapter并创建了几个函数，包括search（），它基于rawquery语句返回游标

    public Cursor search(String param) {
    Cursor cursor = mDb.rawQuery("Select distinct DiagLookup._id, diagnosis, diagcode, favourite From DiagLookup Left Outer Join DiagSynonyms On DiagLookup._id = DiagSynonyms.dxid Where diagnosis = ? OR syn = ? OR diagcode = ? order by diagnosis asc", new String[]{"%"+param+"%","%"+param+"%","%"+param+"%"});
    return cursor;
}

当我在我的Search ListActivity中调用search（）时，它不起作用，但当我在搜索中插入以下语句时，它可以工作

    public void doMySearch(String query_results) {
    SQLiteDatabase db = (new DatabaseHelper(this)).getWritableDatabase();

    //dbh = new DxDbAdapter(this);
    //dbh.open();

    String[] columns = new String[] {"diagnosis", "diagcode"};
    int[] to = new int[] {R.id.diagnosis, R.id.code};

    //Cursor cursor = dbh.search(query_results);
    Cursor cursor = db.rawQuery("Select DiagLookup._id, diagnosis, diagcode, favourite From DiagLookup Left Outer Join DiagSynonyms On DiagLookup._id = DiagSynonyms.dxid Where diagnosis Like ? OR syn Like ? OR diagcode Like ? order by diagnosis asc", new String[]{"%"+query_results.trim()+"%","%"+query_results.trim()+"%","%"+query_results.trim()+"%"});
    startManagingCursor(cursor);    
    adapter = new DxSimpleCursorAdapter(this,R.layout.list_detail,cursor,columns,to);
    setListAdapter(adapter);
}

你可以看到我已经注释了我用我的search（）函数填充光标的原始方法，这种方法不起作用......任何想法我做错了什么？

运行Cursor cursor = dbh.search(query_results);代码时出现的错误是

couldn't save which view has focus because the focused view com.android.internal.policy.impl.PhoneWindow$DecorView@4053d398 has no id.

当我运行Cursor cursor = db.rawQuery("Select DiagLookup._id, diagnosis, diagcode, favourite From DiagLookup Left Outer Join DiagSynonyms On DiagLookup._id = DiagSynonyms.dxid Where diagnosis Like ? OR syn Like ? OR diagcode Like ? order by diagnosis asc", new String[]{"%"+query_results.trim()+"%","%"+query_results.trim()+"%","%"+query_results.trim()+"%"});时，它会起作用并返回一个填充的列表视图。

search（）不起作用，但具有相同查询的rawquery游标有效

0 个答案: