大致思想
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| private List<ZJLoction> searchListData = new ArrayList<ZJLoction>();
private ListView searchListView;
private AddressSearchAdapter searchAdapter;
|
如上面代码所示，定义了三个对象
searchListData是数据源
searchListView是数据显示的地方
searchAdapter是连接数据源和展示的桥梁
可以这样比喻
searchListData是货源
searchListView是货仓
searchAdapter是拉货的车
要建立之间的关系就要做如下操作
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| searchListView = (ListView)findViewById(R.id.address_list_search);
searchAdapter = new AddressSearchAdapter(mAppContext);
searchListView.setAdapter(searchAdapter);
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而要更新数据 也就是要通知拉货的车 代码如下
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| searchAdapter.notifyDataSetChanged();
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自定义Adapter
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| private class AddressSearchAdapter extends BaseAdapter {
private final LayoutInflater mInflater;
private final Context mContext;
private AddressSearchAdapter(Context context) {
mContext = context;
mInflater = LayoutInflater.from(mContext);
}
@Override
public int getCount() {
return searchListData.size();
}
@Override
public Object getItem(int position) {
return listData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ZJLoction location = searchListData.get(position);
AddressItem addressItem = null;
if(convertView == null){
convertView = mInflater.inflate(R.layout.address_item,null);
addressItem = new AddressItem(convertView);
convertView.setTag(addressItem);
}else{
addressItem = (AddressItem)convertView.getTag();
}
addressItem.titleView.setText(location.getName());
addressItem.detailView.setText(location.getAddress());
return convertView;
}
}
private class AddressItem{
TextView titleView;
TextView detailView;
public AddressItem(View convertView) {
titleView = (TextView)convertView.findViewById(R.id.address_item_title);
detailView = (TextView)convertView.findViewById(R.id.address_item_detail);
}
}
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通过判断convertView是否为空来复用