BaseAdapter中的GetCount方法频繁调用，请高手看看

Question

只有三条数据，但是调用GetCount()方法多达650+以上的次数，不知道原因。是否与Layout XML文件相关
private class ListViewAdapter extends BaseAdapter
    {
        /* inflater */
        private LayoutInflater mInflater;        private ArrayList<AbsSiteInfo> sites;        private ArrayList<LDAPSiteInfo> ldapSites;        private ArrayList<AbsSiteInfo> selectedSites;        private ArrayList<LDAPSiteInfo> selectedLDAPSites;        private int count = 0;        public ListViewAdapter()
        {
            HLog.i("AddrLocalView", "ListViewAdapter: ListViewAdapter");
            mInflater = LayoutInflater.from(mContext);
            sites = new ArrayList<AbsSiteInfo>();
            ldapSites = new ArrayList<LDAPSiteInfo>();
            selectedSites = new ArrayList<AbsSiteInfo>();
            selectedLDAPSites = new ArrayList<LDAPSiteInfo>();
        }        @Override
        public int getCount()
        {
            return count;
        }        public String getItemName(int postion)
        {
            HLog.i("AddrLocalView", "ListViewAdapter: getItemName");
            if (postion >= sites.size())
            {
                return ldapSites.get(postion - sites.size()).getAbsSite().name;
            }
            else
            {
                return sites.get(postion).name;
            }        }        public int getSelectedCount()
        {
            HLog.i("AddrLocalView", "ListViewAdapter: getSelectedCount");
            return selectedLDAPSites.size() + selectedSites.size();
        }
        public ArrayList<AbsSiteInfo> getSites()
        {
            return sites;
        }        @Override
        public long getItemId(int position)
        {
            HLog.i("AddrLocalView", "ListViewAdapter: getItemId");
            return position;
        }       
       
        /**
         * 得到每行item ,一个view代表一行item
         */
        public View getView(int position, View convertView, ViewGroup parent)
        {
            HLog.i("AddrLocalView", "ListViewAdapter: getView");
            final Viewholder viewholder;
            if (convertView == null)
            {
                convertView = mInflater.inflate(R.layout.address_list_style, null);
                viewholder = new Viewholder();                // 取出控件对象
                viewholder.lineLayout = (LinearLayout) convertView.findViewById(R.id.lineText);
                viewholder.text = (TextView) convertView.findViewById(R.id.txtSname);
                viewholder.no = (TextView) convertView.findViewById(R.id.no);
                viewholder.onlineImage = (ImageView) convertView.findViewById(R.id.online_status_image);
                viewholder.mtableLayout = (TableLayout) convertView.findViewById(R.id.childText);
                viewholder.addrCheckbox = (CheckBox) convertView.findViewById(R.id.address_check);
                viewholder.btnSave = (ImageButton) convertView.findViewById(R.id.ldap_item_save);
                viewholder.btnExpand = (ImageView) convertView.findViewById(R.id.expand);
                viewholder.ldap_image = (ImageView) convertView.findViewById(R.id.ldap_image);                viewholder.addrCheckbox.setOnClickListener(new OnClickListenerHandle()
                {
                    @Override
                    public void onNormalClick(View v)
                    {
                        CheckBox chkbtn = (CheckBox) v;
                        handlerCheckboxClick(chkbtn);
                    }                });                                convertView.setTag(viewholder);
            }
            else
            {
                viewholder = (Viewholder) convertView.getTag();
            }

Answer 1

除上Layout 的XML源码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal" android:id="@+id/sitetitleline"
android:gravity="center" android:layout_width="fill_parent"
android:layout_height="40dip">
<CheckBox android:id="@+id/address_check" android:button="@drawable/call_select_normal"
style="@style/check_box_style" />
<LinearLayout android:id="@+id/lineText"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_vertical">
<ImageView android:id="@+id/online_status_image"
android:layout_width="20dip" android:layout_height="wrap_content" />
<ImageView android:id="@+id/ldap_image" android:src="@drawable/call_site_station_ldap"
android:layout_width="20dip" android:layout_height="wrap_content"
android:layout_marginLeft="5dip" android:visibility="invisible" />
<TextView android:id="@+id/txtSname" android:layout_width="120dip"
android:layout_marginLeft="5dip" android:singleLine="true"
android:ellipsize="end" android:textColor="#000000"
android:layout_height="wrap_content" style="@style/itemSiteNumberStyle" />
<TextView android:id="@+id/no" android:layout_width="120dip"
android:singleLine="true" android:ellipsize="end" android:textColor="#000000"
android:layout_marginLeft="25dip" android:layout_height="wrap_content"
style="@style/itemSiteNumberStyle" />
<ImageButton android:id="@+id/ldap_item_save"
android:background="@drawable/call_save_btn_normal" android:src="@drawable/call_save_icon"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginLeft="50dip" />
<ImageView android:id="@+id/expand" android:src="@drawable/call_site_information"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_marginLeft="15dip" />
</LinearLayout>
</LinearLayout>

</LinearLayout>

Answer 2

http://blog.csdn.net/jzf429/article/details/6575660
给LZ一个链接哈，可以参考一下，就知道啦~~

Answer 3

第一你的count 在哪赋值的我们没有看到 第二一般情况count执行都会比你的view个数要多 因为要mesure 比较高度 但是你说的650次 我觉得就有些奇怪了 

Answer 4

初始化就赋了个count = 0，的确有些奇怪。现在加载界面有点慢，不知道大家一般一条数据，会加载多少次GetCount方法？。

Answer 5

你的count 一直是0是不对的 你给count一个你的具体item的个数的值 比如说 3 你再打印看看

Answer 6

不好意思，代码没有贴全：
  /**
         * 设置数据源
         * @param sites
         * @param ldapSites
         */
        public void setData(ArrayList<AbsSiteInfo> sites, ArrayList<LDAPSiteInfo> ldapSites)
        {
            this.sites = sites;
            this.ldapSites.clear();
            if (null != ldapSites)
            {
                this.ldapSites = ldapSites;
            }
            count = this.sites.size() + this.ldapSites.size();
        }
现在的问题是数据可以显示出来，但是调用Getcount次数过多，导致在Android的模拟器上显示有些慢。

Answer 7

listView 的getCount一般是在notifyDataChanged才会调用

Answer 8

数据量？离我的数据量差别好大，我的只有3条数据，但是取了400+次GetCount方法（将父容器的长和宽固定写死），之前没有优化确需要700+次

Answer 9

找到原因了，由于XML文件的结构过于复杂造成。层次嵌套太深