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您好我正在爲我的android項目創建一個sqlite幫助文件。我已經找到了幾個關於這樣做的教程,但是我在從sqlite數據庫中檢索值時遇到了問題。我收到以下錯誤信息:「無法解析構造」使用光標的sqlite更新方法
Event getEvent(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_EVENTS, new String[] { KEY_ID, KEY_EVENTNAME, KEY_EVENTTIME,
KEY_EVENTDATE, KEY_EVENTLOCATION, KEY_EVENTADDRESS1, KEY_EVENTADDRESS2, KEY_EVENTCITY, KEY_EVENTSTATE, KEY_EVENTZIP, KEY_EVENTTYPE },
KEY_ID + "=?", new String[] {String.valueOf(id)}, null, null, null, null);
if (cursor != null)
cursor.moveToFirst();
Event event = new Event(Integer.parseInt(cursor.getString(0)), cursor.getString(1),cursor.getString(2),cursor.getString(3),cursor.getString(4),
cursor.getString(5), cursor.getString(6),cursor.getString(7), cursor.getString(8), cursor.getString(9),
cursor.getString(10), cursor.getString(11));
//return event
return event;
}
的錯誤是在與事件事件=新事件開始的聲明....
我不知道怎麼做,如果我需要每個表列的cursor.getString(n)?
任何幫助將是偉大的。
謝謝。
添加事件文件
//empty contructor
public Event(){
}
public Event(int id, String _eventName, String _eventTime, String _eventDate, String _eventLocation, String _eventAddress1, String _eventAddress2, String _eventCity, String _eventState, int _eventZip, String _eventType) {
this._id = id;
this._eventName = _eventName;
this._eventTime = _eventTime;
this._eventDate = _eventDate;
this._eventLocation = _eventLocation;
this._eventAddress1 = _eventAddress1;
this._eventAddress2 = _eventAddress2;
this._eventCity = _eventCity;
this._eventState = _eventState;
this._eventZip = _eventZip;
this._eventType = _eventType;
}
public Event(String _eventName, String _eventTime, String _eventDate, String _eventLocation, String _eventAddress1, String _eventAddress2, String _eventCity, String _eventState, int _eventZip, String _eventType) {
this._eventName = _eventName;
this._eventTime = _eventTime;
this._eventDate = _eventDate;
this._eventLocation = _eventLocation;
this._eventAddress1 = _eventAddress1;
this._eventAddress2 = _eventAddress2;
this._eventCity = _eventCity;
this._eventState = _eventState;
this._eventZip = _eventZip;
this._eventType = _eventType;
}
請粘貼您的Event構造函數。順便說一句:更好的方式來獲得列的價值是'cursor.getString(cursor.getColumnIndexOrThrow(YOUR_KEY));' – 2014-12-11 00:14:41
哦,親愛的,'無法解析構造函數'意味着編譯器,等待它,等待它,無法解析構造函數。 – Selvin 2014-12-11 00:15:10
@PetrDuchek我添加了我的Event構造函數。謝謝,我會嘗試這種方式。 – hozdaman 2014-12-11 00:21:03