我嘗試使用RawQuery方法從數據庫中提取數據,但我似乎是空行...數據庫中存在actully數據,我試圖拉.......任何人發現任何錯誤....rawquerry數據光標顯示空字段
db = dbhelper.getReadableDatabase();
String selectSQL = "Select * from " + Wish_list_Table.TABLE_NAME
+ " where " + Wish_list_Table.COL_CATEGORY + " = ?";
String[] add = { " HOME" };
TextView textView = getGenericView();
Cursor selectdata = db.rawQuery(selectSQL, add);
Log.i("select", "" + selectdata.getCount());
這個類的數據庫表屬性......
public static abstract class Wish_list_Table implements BaseColumns {
public static final String TABLE_NAME = "WISH_LIST1";
public static final String COL_NAME = "NAME";
public static final String COL_TIME = "TIME";
public static final String COL_DATE = "DATE";
public static final String COL_CATEGORY = "CATEGORY";
public static final String COL_DESC = "DESC";
}
這是數據庫映像...
你可以請出示你的數據庫的一部分,其中的類家庭存在的記錄?你確定HOME是否大寫並註明家庭或家庭? –