最近在看一個(gè)高仿拉手網(wǎng)的手機(jī)app教程,看到那個(gè)主界面商品信息的時(shí)候出現(xiàn)問(wèn)題,它用了PullToFresh這個(gè)實(shí)現(xiàn)了下拉刷新和上拉加載更多的功能,就是發(fā)送http請(qǐng)求到我的tomcat服務(wù)器請(qǐng)求數(shù)據(jù)然后再通過(guò)json返回來(lái),但是我現(xiàn)在貌似無(wú)法監(jiān)聽(tīng)到這個(gè)上拉下拉的動(dòng)作,希望大神幫我看看。
public class GoodsAdapter extends BaseAdapter {
private List<Goods> mList;
public GoodsAdapter(List<Goods> list){
mList=list;
}
@Override
public int getCount() {
return (mList != null) ? mList.size() : 0;
}
@Override
public Object getItem(int position) {
return (mList != null && mList.size() > position) ? mList.get(position-1): null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder=null;
if(convertView==null){
convertView= LayoutInflater.from(parent.getContext()).inflate(R.layout.goods_list_row,null);
holder=new ViewHolder();
ViewUtils.inject(holder,convertView);
convertView.setTag(holder);
}else{
holder=(ViewHolder)convertView.getTag();
}
Goods goods=mList.get(position);
Picasso.with(parent.getContext()).load(goods.getImgUrl())
.placeholder(R.drawable.default_pic).into(holder.photo);
holder.title.setText(goods.getSortTile());
holder.tv_content.setText(goods.getTitle());
holder.price.setText(String.valueOf("¥" + goods.getPrice()));
holder.value.setText(String.valueOf("¥" + goods.getValue()));
if (goods.isOp()) {
holder.appointment_img.setVisibility(View.VISIBLE);
} else {
holder.appointment_img.setVisibility(View.GONE);
}
return convertView;
}
class ViewHolder{
@ViewInject(R.id.photo)
private ImageView photo;
@ViewInject(R.id.appoitment_img)
private ImageView appointment_img;
@ViewInject(R.id.title)
private TextView title;
@ViewInject(R.id.tv_content)
private TextView tv_content;
@ViewInject(R.id.price)
private TextView price;
@ViewInject(R.id.value)
private TextView value;
@ViewInject(R.id.distance)
private TextView distance;
}
}
public class FragmentIndex extends android.support.v4.app.Fragment {
@ViewInject(R.id.home_city)
private TextView home_city;
@ViewInject(R.id.goods_list_view)
private PullToRefreshListView goods_list_view;
private List<Goods> mList;
private int page=0,size=20,count=0;
private GoodsAdapter mGoodsAdapter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle){
View view=LayoutInflater.from(getActivity()).inflate(R.layout.frag_index ,null);
ViewUtils.inject(this,view);
goods_list_view.setMode(PullToRefreshBase.Mode.BOTH);//同時(shí)支持上拉更多下拉刷新
goods_list_view.setScrollingWhileRefreshingEnabled(true);
//設(shè)置監(jiān)聽(tīng),在拉動(dòng)的時(shí)候回調(diào)
/* goods_list_view.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener<ListView>() {
@Override
public void onRefresh(PullToRefreshBase<ListView> refreshView) {
//進(jìn)行數(shù)據(jù)加載的操作
loadDatas(refreshView.getScrollY()<0);
}
});*/
//設(shè)置監(jiān)聽(tīng)
goods_list_view.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
@Override
//下拉刷新的時(shí)候調(diào)用的方法....請(qǐng)求第一頁(yè)的數(shù)據(jù),清空之前的數(shù)據(jù),然后再添加設(shè)置適配器
public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {
loadDatas(true);
Log.v("測(cè)試","我是測(cè)試元啦啦啦");
}
@Override
//上拉刷新的時(shí)候調(diào)用的方法..page++,然后在請(qǐng)求數(shù)據(jù)
public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {
loadDatas(false);
}
});
//首次進(jìn)入自動(dòng)加載
new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
goods_list_view.setRefreshing();
return true;
}
}).sendEmptyMessageDelayed(0,200);
return view;
}
//如果是true表示下拉刷新,false表示上拉加載更多
private void loadDatas(final boolean direction){
RequestParams params=new RequestParams();
if(direction){//下拉刷新
page=1;
}else{
page++;
}
params.addQueryStringParameter("page",String .valueOf(page));
params.addQueryStringParameter("size",String.valueOf(size));
new HttpUtils().send(HttpRequest.HttpMethod.GET, CONST.GOODS_LIST, params, new RequestCallBack<String>() {
@Override
public void onSuccess(ResponseInfo<String> responseInfo) {
goods_list_view.onRefreshComplete();
Gson gson=new GsonBuilder().create();
ResponseObject<List<Goods>> object=gson.fromJson(responseInfo.result,new TypeToken <ResponseObject<List<Goods>>>(){}.getType());
page = object.getPage();
size = object.getSize();
count = object.getCount();
if (direction) {//下拉刷新
mList=(List<Goods>)object.getDatas();
mGoodsAdapter = new GoodsAdapter(mList);
goods_list_view.setAdapter(mGoodsAdapter);
} else {//上拉加載更多
mList.addAll((List<Goods>)object.getDatas());
mGoodsAdapter.notifyAll();
}
if (count == page) {//已經(jīng)到最后一頁(yè),不可以再拉了
goods_list_view.setMode(PullToRefreshBase.Mode.PULL_FROM_START);
}
}
@Override
public void onFailure(HttpException e, String s) {
goods_list_view.onRefreshComplete();
Toast.makeText(getActivity(), s, Toast.LENGTH_SHORT).show();
}
});
}
@OnClick({R.id.home_city,R.id.home_map,R.id.home_search,})
public void onClick(View v){
switch (v.getId()){
case R.id.home_city://地址
{
startActivity(new Intent(getActivity(), CityActivity.class));
break;
}
case R.id.home_map:
break;
case R.id.home_search:
break;
}
}
@Override
public void setMenuVisibility(boolean menuVisibility){
super.setMenuVisibility(menuVisibility);
if(this.getView()!=null)
this.getView().setVisibility(menuVisibility?View.VISIBLE:View.GONE);
}
}
北大青鳥(niǎo)APTECH成立于1999年。依托北京大學(xué)優(yōu)質(zhì)雄厚的教育資源和背景,秉承“教育改變生活”的發(fā)展理念,致力于培養(yǎng)中國(guó)IT技能型緊缺人才,是大數(shù)據(jù)專業(yè)的國(guó)家
北大青鳥(niǎo)中博軟件學(xué)院創(chuàng)立于2003年,作為華東區(qū)著名互聯(lián)網(wǎng)學(xué)院和江蘇省首批服務(wù)外包人才培訓(xùn)基地,中博成功培育了近30000名軟件工程師走向高薪崗位,合作企業(yè)超4
中公教育集團(tuán)創(chuàng)建于1999年,經(jīng)過(guò)二十年潛心發(fā)展,已由一家北大畢業(yè)生自主創(chuàng)業(yè)的信息技術(shù)與教育服務(wù)機(jī)構(gòu),發(fā)展為教育服務(wù)業(yè)的綜合性企業(yè)集團(tuán),成為集合面授教學(xué)培訓(xùn)、網(wǎng)
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