共享实验12简易新闻客户端

实验 简易新闻客户2、初步掌握Android1、HTTP2、HttpPost相同tab1.xmlandroid:layout_height="match_parent"><?xmlversion="1.0"11‐26"android:singleLine="true"publicclassCategoryimplementsprivateintid;privateStringcid;privateStringcname;publicintgetId(){return}publicvoidsetId(intid)this.id=}publicStringgetCid()return}publicvoidsetCid(Stringcid)this.cid=}publicStringgetCname()return}publicvoidsetCname(Stringcname)ame=}}publicclassNewsimplementsprivateintnid;privateStringtitle;privateStringexpress;privateStringcontent;privateStringdatetime;privateStringauthor;privateStringcid;publicintgetNid(){return}publicvoidsetNid(intnid)this.nid=}publicStringgetTitle()return}publicvoidsetTitle(Stringtitle)this.title=}publicStringgetContent()return}publicvoidsetContent(Stringcontent)this.content=}publicStringgetDatetime()return}publicvoidsetDatetime(Stringdatetime)this.datetime=}publicStringgetAuthor()return}publicvoidsetAuthor(Stringauthor)this.author=}publicStringgetCid()return}publicvoidsetCid(Stringcid)this.cid=}publicStringgetExpress()return}publicvoidsetExpress(Stringexpress)this.express=}}publicclassHttpUtilspublicstaticfinalintMETHOD_GET=1;publicstaticfinalintMETHOD_POST=2;publicstaticHttpEntitygetEntity(Stringuri,List<NameValuePair>{HttpEntityentity=HttpClientclient=newHttpUriRequestrequest=null;caseMETHOD_GET//getStringBuildersb=new&&!params.isEmpty()){for(NameValuePairpair}}request=newcaseMETHOD_POST://post请求requestnewHttpPost(uri);&&!params.isEmpty()){UrlEncodedFormEntityreqEntity=new}}HttpResponseresponse=entity=}return}}6)MainActivityoncreateprivatestaticfinalStringip=TabHosthost=Stringuri=ip+":8080/androidServiceOfnews/GetAllCategory";HttpEntityentity=null;Stringinfo=tryentity=HttpUtils.getEntity(uri,null,info=}catch(Exception{}List<Category>clist=if(clist!=null)for(inti=0;i<clist.size();{Categoryc=(Category)TabSpectab=ent(newIntent(this,SszzActivity.class));}abSpectab=ent(newIntent(this,JsxwActivity.class));}abSpectab=ent(newIntent(this,TyxwActivity.class));}abSpectab=ent(newIntent(this,CjxwActivity.class));}abSpectab=ent(newIntent(this,ShzxActivity.class));}}}publicclassSszzActivityextendsprivateListViewprivateNewsAdapterprivatestaticfinalStringip="06";protectedvoidonCreate(BundleArrayList<News>newslist=//实例化lv=adapter=newNewsAdapter(this,}publicArrayList<News>List<NameValuePair>params=newArrayList<NameValuePair>();params.add(newBasicNameValuePair("cid","sszz"));HttpEntityentity=null;Stringinfo=tryentity=HttpUtils.getEntity(uri,params,HttpUtils.METHOD_GET);info=EntityUtils.toString(entity);}catch(Exception{}ArrayList<News>newslist=return}}publicclassJsonUtilpublicstaticArrayList<Category>parseJsonCategorylist(StringArrayList<Category>clist=newtryJSONArrayarray=newfor(inti=0;i<array.length();{JSONObjecttemp=(JSONObject)array.get(i);Categoryc=newCategory();intid=Stringcid=temp.getString("cid");Stringcname=temp.getString("cname");c=newCategory();}}catch(JSONException{System.out.println("Jsonparseerror");}return}publicstaticArrayList<News>parseJsonNewslist(StringArrayList<News>nlist=newtryJSONArrayarray=newfor(inti=0;i<array.length();{JSONObjecttemp=(JSONObject)array.get(i);Newsn=newNews();}}catch(JSONException{System.out.println("Jsonparseerror");}return}}publicclassNewsAdapterextendsprivateLayoutInflaterprivateArrayList<News>publicNewsAdapter(Contextcontext,ArrayList<News>nlist){inflater=LayoutInflater.from(context);this.newslist=this.newslist=new}}*publicintgetCount()//TODOAuto‐generatedmethodreturn}publicObjectgetItem(intposition)//TODOAuto‐generatedmethodreturn}publiclonggetItemId(intposition)//TODOAuto‐generatedmethodreturn}*返回指定位置数据绑定的itemconvertViewpublicViewgetView(intposition,ViewconvertView,ViewGroupparent){//TODOAuto‐generatedmethodstubViewHolderholder=newViewHolder();convertView=inflater.inflate(R.layout.item,null);holder=newViewHolder();holder.tvTitle=(TextView)holder.tvExpress=(TextView)holder.tvDatetime=(TextView)holder.tvA