一般的關於Adapter中getView的寫法不外乎以下形式：

@Overridepublic 

ViewgetView(int position, View convertView, ViewGroup parent) 

{  

ViewHolder holder;  

if (convertView == null) 

{  

convertView = mLayout.inflate(R.layout....);  

holder =new ViewHolder();  

holder.textView = (TextView) convertView.findViewById(R.id.textview);  

... ...  

convertView.setTag(holder);  

} 

else {  

holder = (ViewHolder) convertView.getTag();  

}  

holder.textView.setText(mText + position);  

return convertView;

}

在Android原始碼中關於getView方法的實現就是採用的以上形式，如ArrayAdapter等。因為這種寫法的好處也是顯而易見的，如果該position的convertview曾經被載入過，在資料集合未被改動的前提下，系統會自動將該position的convertview快取起來，避免重複載入耗費資源。

我自己的程式碼：

@Override
public View getView(int position, View view, ViewGroup parent) {

    final ViewHolder mViewHolder;
    if(null == view){
        mViewHolder = new ViewHolder();
        view = LayoutInflater.from(mContext).inflate(R.layout.fragment_new_order_list_item, null);

        mViewHolder.txtPaystatus 
 
= (TextView) view.findViewById(R.id.order_pay_status);
        mViewHolder.txtOrdertime = (TextView) view.findViewById(R.id.order_time);
        mViewHolder.txtCustomerName = (TextView) view.findViewById(R.id.customer_name);
        mViewHolder.txtCustomerAddress = (TextView) view.findViewById(R.id.customer_address);
        mViewHolder.txtOrderSendTime = (TextView) view.findViewById(R.id.customer_post_time);
        mViewHolder.txtOrderGoodsDes = (TextView) view.findViewById(R.id.customer_list_goods_des);
        mViewHolder.txtCustomerPhone = (TextView) view.findViewById(R.id.customer_phone);
        mViewHolder.btnOrderOk = (Button) view.findViewById(R.id.order_ok);
        mViewHolder.btnOrderCancel = (Button) view.findViewById(R.id.order_cancel);
        mViewHolder.listgoods = (ListView) view.findViewById(R.id.customer_list_goods);

        if(listOrder.get(position).getPaystatus() == 0)
        {
            mViewHolder.txtPaystatus.setText("未付款");
        }
        else
{
            mViewHolder.txtPaystatus.setText("已付款");
        }

        mViewHolder.txtOrdertime.setText(listOrder.get(position).getOrdertime());
        mViewHolder.txtCustomerName.setText(listOrder.get(position).getAcceptname());
        mViewHolder.txtCustomerAddress.setText(listOrder.get(position).getAcceptlocation());
        mViewHolder.txtOrderSendTime.setText(listOrder.get(position).getGoodsarrivetime());
        mViewHolder.txtOrderGoodsDes.setText(listOrder.get(position).getOrderSeller().getRemark());
        mViewHolder.txtCustomerPhone.setText(listOrder.get(position).getAcceptphonenum());
        OrderGoodsListItemAdapter mOrderGoodsListItemAdapter = new OrderGoodsListItemAdapter(mContext,
                listOrder.get(position).getOrderSeller().getLstOrderGoods());
        mViewHolder.listgoods.setAdapter(mOrderGoodsListItemAdapter);
        setListViewHeightOnChildren(mViewHolder.listgoods);
        final int index = position;
        mViewHolder.btnOrderOk.setOnClickListener(new View.OnClickListener(){
            @Override
public void onClick(View v) {
                String sellerorderid = String.valueOf(listOrder.get(index).getOrderSeller().getSellerorderid());
                String token = App.getInstance().sellerInfo.getToken();
                orderService.modifyOrder(sellerorderid, "1", token)
                        .subscribe(new Action1<String>() {
                            @Override
public void call(String s) {
                                Toast.makeText(mContext, s, Toast.LENGTH_SHORT).show();
                                newOrderFragment.listOrder.clear();
                                newOrderFragment.pageindex = 1;
                                newOrderFragment.requestData();
                                App.isNeedFreshData = true;
                                App.isNeedFresShophData = true;

                            }
                        }, new Action1<Throwable>() {
                            @Override
public void call(Throwable throwable) {
                                Toast.makeText(mContext, throwable.getMessage(), Toast.LENGTH_SHORT).show();
                            }
                        });
            }
        });

        mViewHolder.btnOrderCancel.setOnClickListener(new View.OnClickListener(){
            @Override
public void onClick(View v) {
                String sellerorderid = String.valueOf(listOrder.get(index).getOrderSeller().getSellerorderid());
                String token = App.getInstance().sellerInfo.getToken();
                orderService.modifyOrder(sellerorderid, "2", token)
                        .subscribe(new Action1<String>() {
                            @Override
public void call(String s) {
                                Toast.makeText(mContext, s, Toast.LENGTH_SHORT).show();
                                newOrderFragment.listOrder.clear();
                                newOrderFragment.pageindex = 1;
                                newOrderFragment.requestData();
                                App.isNeedFreshData = true;
                                App.isNeedFresShophData = true;
                            }
                        }, new Action1<Throwable>() {
                            @Override
public void call(Throwable throwable) {
                                Toast.makeText(mContext, throwable.getMessage(), Toast.LENGTH_SHORT).show();
                            }
                        });
            }
        });
        view.setTag(mViewHolder);
    }
    else
{
        mViewHolder = (ViewHolder) view.getTag();
    }
    return view;
}

然後問題就來了，當時我就”自作小聰明“或者說“沒有注意”，覺得當convertview==null時只是做了item佈局的載入以及相關控制元件ID的繫結操作，為什麼連內容的載入操作也放入其中呢，這樣下次載入快取是就省去內容set的操作了，然後就出現了滑動ListView後資料顯示錯位的問題。

剖析原因：

後來看原始碼發現，原來AbListView中獲取getView()和滑動操作是非同步進行的，其中滑動操作在一個FlingRunnable的支執行緒中執行，所以這就導致了在ListView在滑動時可能已經滑動到了第十行，但可能第二行的資料這時就被直接使用了，這就是導致資料載入錯亂的根本原因。
附上原始碼中對FlingRunnable的註釋：

/**
 * Responsible for fling behavior. Use {@link #start(int)} to
 * initiate a fling. Each frame of the fling is handled in {@link #run()}.
 * A FlingRunnable will keep re-posting itself until the fling is done.
 *
 */
private class FlingRunnable implements Runnable {
    /**
     * Tracks the decay of a fling scroll
     */
    private final OverScroller mScroller;
    ... ...
}

解決方法

所以唯一的解決方法就是隻在convertview中快取該ChildView的layout，但ChildView 中的資料必須每次都重新獲取並載入。

修改後的程式碼：

@Override
public View getView(int position, View view, ViewGroup parent) {

    final ViewHolder mViewHolder;
    if(null == view){
        mViewHolder = new ViewHolder();
        view = LayoutInflater.from(mContext).inflate(R.layout.fragment_new_order_list_item, null);

        mViewHolder.txtPaystatus = (TextView) view.findViewById(R.id.order_pay_status);
        mViewHolder.txtOrdertime = (TextView) view.findViewById(R.id.order_time);
        mViewHolder.txtCustomerName = (TextView) view.findViewById(R.id.customer_name);
        mViewHolder.txtCustomerAddress = (TextView) view.findViewById(R.id.customer_address);
        mViewHolder.txtOrderSendTime = (TextView) view.findViewById(R.id.customer_post_time);
        mViewHolder.txtOrderGoodsDes = (TextView) view.findViewById(R.id.customer_list_goods_des);
        mViewHolder.txtCustomerPhone = (TextView) view.findViewById(R.id.customer_phone);
        mViewHolder.btnOrderOk = (Button) view.findViewById(R.id.order_ok);
        mViewHolder.btnOrderCancel = (Button) view.findViewById(R.id.order_cancel);
        mViewHolder.listgoods = (ListView) view.findViewById(R.id.customer_list_goods);
        view.setTag(mViewHolder);
    }
    else
{
        mViewHolder = (ViewHolder) view.getTag();
    }
    if(listOrder.get(position).getPaystatus() == 0)
    {
        mViewHolder.txtPaystatus.setText("未付款");
    }
    else
{
        mViewHolder.txtPaystatus.setText("已付款");
    }

    mViewHolder.txtOrdertime.setText(listOrder.get(position).getOrdertime());
    mViewHolder.txtCustomerName.setText(listOrder.get(position).getAcceptname());
    mViewHolder.txtCustomerAddress.setText(listOrder.get(position).getAcceptlocation());
    mViewHolder.txtOrderSendTime.setText(listOrder.get(position).getGoodsarrivetime());
    mViewHolder.txtOrderGoodsDes.setText(listOrder.get(position).getOrderSeller().getRemark());
    mViewHolder.txtCustomerPhone.setText(listOrder.get(position).getAcceptphonenum());

    OrderGoodsListItemAdapter mOrderGoodsListItemAdapter = new OrderGoodsListItemAdapter(mContext,
            listOrder.get(position).getOrderSeller().getLstOrderGoods());
    mViewHolder.listgoods.setAdapter(mOrderGoodsListItemAdapter);
    setListViewHeightOnChildren(mViewHolder.listgoods);
    final int index = position;
    mViewHolder.btnOrderOk.setOnClickListener(new View.OnClickListener(){
        @Override
public void onClick(View v) {
            String sellerorderid = String.valueOf(listOrder.get(index).getOrderSeller().getSellerorderid());
            String token = App.getInstance().sellerInfo.getToken();
            orderService.modifyOrder(sellerorderid, "1", token)
                    .subscribe(new Action1<String>() {
                        @Override
public void call(String s) {
                            Toast.makeText(mContext, s, Toast.LENGTH_SHORT).show();
                            newOrderFragment.listOrder.clear();
                            newOrderFragment.pageindex = 1;
                            newOrderFragment.requestData();
                            App.isNeedFreshData = true;
                            App.isNeedFresShophData = true;
                        }
                    }, new Action1<Throwable>() {
                        @Override
public void call(Throwable throwable) {
                            Toast.makeText(mContext, throwable.getMessage(), Toast.LENGTH_SHORT).show();
                        }
                    });
        }
    });

    mViewHolder.btnOrderCancel.setOnClickListener(new View.OnClickListener(){
        @Override
public void onClick(View v) {
            String sellerorderid = String.valueOf(listOrder.get(index).getOrderSeller().getSellerorderid());
            String token = App.getInstance().sellerInfo.getToken();
            orderService.modifyOrder(sellerorderid, "2", token)
                    .subscribe(new Action1<String>() {
                        @Override
public void call(String s) {
                            Toast.makeText(mContext, s, Toast.LENGTH_SHORT).show();
                            newOrderFragment.listOrder.clear();
                            newOrderFragment.pageindex = 1;
                            newOrderFragment.requestData();
                            App.isNeedFreshData = true;
                            App.isNeedFresShophData = true;
                        }
                    }, new Action1<Throwable>() {
                        @Override
public void call(Throwable throwable) {
                            Toast.makeText(mContext, throwable.getMessage(), Toast.LENGTH_SHORT).show();
                        }
                    });
        }
    });
    return view;
}

其實ListView資料載入及資料快取是比較複雜的，所以以後有機會還是要好好研讀原始碼，這樣才能有助於提升自己開發Android的效能和對Android工作的原理的理解。