是這里的原因嗎

if(cursor?!=null){
????while(cursor.moveToNext()){
????????CostBean?costBean?=?new?CostBean();
????????costBean.costTitle?=?cursor.getString(cursor.getColumnIndex("cost_title"));
????????costBean.costDate?=?cursor.getString(cursor.getColumnIndex("cost_date"));
????????costBean.costMoney?=?cursor.getString(cursor.getColumnIndex("cost_money"));
????????mCostBeanList.add(costBean);
????}