ดึงค่าในฟิลด์จาก Database SQLite เพื่อมาวน loop คำนวณเก็บสะสมผลรวมไปเรื่อยๆ ต้องดึงยังไงครับ

	public String[] SelectData(String strMemberID) {
		// TODO Auto-generated method stub
		
		 try {
			String arrData[] = null;	
			
			 SQLiteDatabase db;
			 db = this.getReadableDatabase(); // Read Data
				
			 Cursor cursor = db.query(TABLE_MEMBER, new String[] { "*" }, 
					 	"MemberID=?",
			            new String[] { String.valueOf(strMemberID) }, null, null, null, null);
			 
			 	if(cursor != null)
			 	{
					if (cursor.moveToFirst()) {
						arrData = new String[cursor.getColumnCount()];
						/***
						 *  0 = MemberID
						 *  1 = Name
						 *  2 = Tel
						 */
						arrData[0] = cursor.getString(0);
						arrData[1] = cursor.getString(1);
						arrData[2] = cursor.getString(2);
					}
			 	}
			 	cursor.close();
				db.close();
				return arrData;
				
		 } catch (Exception e) {
		    return null;
		 }

	}