我想从数据库中提取几个列并将它们添加到微调器中,但我希望行的_id也隐藏在某个地方。以下是部分示例代码:
public void fillProfileSpinner()
{
String query = "SELECT _id,fruit_type,weight,colour FROM fruits;";
SQLiteDatabase profileDatabase = fruitCakes.database.getReadableDatabase();
Cursor cursor = profileDatabase.rawQuery(query, null);
startManagingCursor(cursor);
try {
cursor.moveToFirst();
do
{
String fruitType = cursor.getString(cursor.getColumnIndex("fruit_type"));
double weight = cursor.getString(cursor.getColumnIndex("weight"));
String colour = cursor.getInt(cursor.getColumnIndex("colour"));
fruitAdapter.add(colour + " " + weight + " " + fruit_type);
}
while(cursor.moveToNext());
}
catch(Exception e)
{
e.printStackTrace();
}
cursor.deactivate();
cursor.close();
profileDatabase.close();
}
我相信这是我正在寻找的东西,但我发现它很混乱: Android Spinners, say I pull spinner selections from SQL, can I also add their SQL _id's to the spinner values?
如何在某处获取_id列,以便可以从微调器对象中的某个方法访问?
答案 0 :(得分:1)
我无法想象您的_ID
值尚未直接可用或可通过该位置派生的情况:
onListItemClick()
的{{1}}中,ListActivity
参数id
的{{1}}中,onItemClick()
参数OnItemClickListener
的{{1}}),在id
上致电getView()
并以此方式检索ListAdapter