尚android企业级项目之新闻

玩转玩转Android—————————————————————————— 谷粉第46 01_自定义类RefreshListView和布局1_自定义类reshitie继承publicclassRefreshListViewextendsListViewpublicRefreshListView(Contextcontext,AttributeSetattrs,defStyle)super(context,attrs,defStyle);}publicRefreshListView(Contextcontext,AttributeSetattrs)super(context,attrs);}publicRefreshListView(Context{super(context);}@parampublicvoidinitHeaderView(Contextcontext){ViewheaderView=}}2_自定义头布 <LinearLayoutxmlns:android="http://s android:orientation="horizontal">android:layout_margin="5dip"> android:visibility="gone"/>android:orientation="vertical">android:textSize="20sp"/>android:textSize="14sp"/>3_自定义ProgressBar样式t_orsrxm9Float厚度的比例android:thicknessRatio=2出现则为false。<rotate android:useLevel="false">android:type="sweep"/>4_隐藏头publicvoidinitHeaderView(Contextcontext){ViewheaderView=intheaderViewHeight=headerView.setPadding(0,-headerViewHeight,0,}02_拖动实现隐藏和显示头部1_画图分2_代码实publicclassRefreshListViewextendsListViewpublicRefreshListView(Contextcontext,AttributeSetattrs,defStyle)super(context,attrs,defStyle);}publicRefreshListView(Contextcontext,AttributeSetattrs)super(context,attrs);}publicRefreshListView(Context{super(context);}*@parampublicvoidinitHeaderView(Context{headerView=View.inflate(context,headerViewHeight=}privateintprivateintprivateViewpublicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())startY=(int)startY=(int)}intendY=(int)intdistanceY=endY-//根据：paddingTo=-控件的高+(endY-intpaddingTop=-headerViewHeight+headerView.setPadding(0,paddingTop,0,return}startY=-}return}}03_怎么判断什么情况完整显示轮播图的时1_思路扩展和画图分getFirstVisiblePosition()==0;这种情况不能显示顶了，显示的话不是我们想要的系统控件是API2_先改变布 <LinearLayoutxmlns:android="http://s android:orientation="horizontal">android:orientation="vertical">3_代码实现ereshitie代码publicclassRefreshListViewextendsListViewprivateintprivateintprivateViewprivateLinearLayout*privateView*@parampublicvoidinitHeaderView(Context{headerView=(LinearLayout)pullDownHeadViewheaderViewHeight=pullDownHeadView.setPadding(0,-headerViewHeight,0,}@parampublicvoidsecondHeaderView){this.secondHeaderView=secondHeaderView;}publicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())startY=(int)startY=(int)}intendY=(int)intdistanceY=endY-//根据：paddingTo=-控件的高+(endY-intpaddingTop=-headerViewHeight+ headerView.setPadding(0,paddingTop,0,pullDownHeadView.setPadding(0,paddingTop,0,return}startY=-}return}} DetailPager中使用RefreshListViewpublicViewinitView()Viewview=View.inflate(mActivity,R.layout.tab_detail,ViewtopnewsView=View.inflate(mActivity,R.layout.tab_detail_topnews,null);return}01_判断轮播图是否完全1_触 里调publicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())startY=(int)if(startY==-startY=(int)}intendY=(int)intdistanceY=endY- booleanisDisy=isDis}if(distanceYintpaddintTop=-headerViewHeight+(distanceY);refreshHeaderView.setPadding(0,paddintTop,0,0);returntrue;}startY=-1;}return}2_判断轮播图是否完整显示方

privatebooleanisDisySecondHeaderView()int[]location=newif(mListViewOnScreen1){this.getLocationOnScreen(location);mListViewOnScreen=location[1];}//获取轮播图在屏幕中Y的值topNewsView.getLocationOnScreen(location);intmSecondHeaderViewOnScreen=location[1];if(mListViewOnScreen<=returnreturn}}returnmListViewOnScreen<=02_刷新的效果的实1_刷新的状态

*privatefinalintPULL_DOWN_REFRESH=*privatefinalintRELEASE_REFRESH=*privatefinalintREFRESHING=privateintcurrentState=publicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())startY=(int)if(startY==-startY=(int)}intendY=(int)intdistanceY=endY- booleanisDisy=isDis}if(distanceYintpaddintTop=-headerViewHeight+if(paddintTop>0&¤tStatecurrentState=RELEASE_REFRESH;}elseif(paddintTop<0&¤tState!=PULL_DOWN_REFRESH){currentState=PULL_DOWN_REFRESH;}refreshHeaderView.setPadding(0,paddintTop,0,return}startY=-1;}return}2_下拉刷新状态处理publicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())if(distanceYintpaddintTop=-headerViewHeight+if(paddintTop>0&¤tStatecurrentState=RELEASE_REFRESH;}elseif(paddintTop<0&¤tState!=PULL_DOWN_REFRESH){currentState=PULL_DOWN_REFRESH;}refreshHeaderView.setPadding(0,paddintTop,0,return}startY=-1;}return}

*privateImageView*privateProgressBarprivateTextViewprivateTextViewprivateRotateAnimationprivateRotateAnimation

@parampublicvoidinitHeaderView(Context{headerView=(LinearLayout)ivArrow=(ImageView)mProgressBar=(ProgressBar)tvState=(TextView)tvTime=(TextView)refreshHeaderView=}privatevoid{upAnima=0,-Animation.RELATIVE_TO_SELF,0.5f,downAnima=new-180,-Animation.RELATIVE_TO_SELF,0.5f,}privatevoidrefreshHeaderViewState()switch(currentState)casePULL_DOWN_REFRESH://下拉刷新caseRELEASE_REFRESH://松开刷新caseREFRESHING://正在刷新中}}03_下拉刷新松开处理和1_下拉刷新松开publicbooleanonTouchEvent(MotionEventev)switch(ev.getAction())startY=(int)if(startY==-startY=(int)}intendY=(int)intdistanceY=endY- }booleanisDisy=isDis}if(distanceYintpaddintTop=-headerViewHeight+if(paddintTop>0&¤tStatecurrentState=RELEASE_REFRESH;}elseif(paddintTop<0&¤tState!=PULL_DOWN_REFRESH){currentState=PULL_DOWN_REFRESH;}refreshHeaderView.setPadding(0,paddintTop,0,return}startY=-1;if(currentState==refreshHeaderView.setPadding(0,-headerViewHeight,0,}elseif(currentState==currentState=REFRESHING;refreshHeaderView.setPadding(0,0,0,0);}}return}2_下拉刷privateOnRefreshListener@parampublicvoidsetOnRefreshListener(OnRefreshListenerthis.mOnRefreshListener=}publicinterfacepublicvoid}startY=-1;if(currentState==refreshHeaderView.setPadding(0headerViewHeight00);}elseif(currentState==currentState=REFRESHING;refreshHeaderView.setPadding(0000);if(mOnRefreshListener}}}return}

publiconRefreshFinish(){refreshHeaderView.setPadding(0,-headerViewHeight,0,0);currentState=} 调用下拉@authorpublicclassTabDetailPagerextendsDetailBasePagerprivatebooleanisPullDownRefreshing=false;publicViewinitView()publicvoid{isPullDownRefreshing=true;;}return}privatevoidgetDataFromNet()HttpUtilshttpUtils=newHttpUtils();httpUtils.send(HttpMethod.GET,url,newReqallBack<String>(){//TODOAuto-generatedmethodstubefreshing=false;}//处理和解析json}publicvoidonFailure(HttpExceptionerror,Stringmsg)efreshing=false;}}}}4_下拉刷新的时publicvoidonRefreshFinish(booleanrefreshHeaderView.setPadding(0,-headerViewHeight,0,0);currentState=PULL_DOWN_REFRESH;}}

privateStringgetSystemTime()returnsdf.format(new}@parampublicvoidinitHeaderView(Context{headerView=(LinearLayout)tvTime=(TextView)}01_添加角布1_初始化和隐藏代码@paramprivatevoidinitFooterView(Context{ViewfooterView=View.inflate(context,R.layout.refresh_listview_footer,null);intfooterViewHeight=footerView.getMeasuredHeight();footerView.setPadding(0,-footerViewHeight,0,0);}2_布局文 eeh_stiorm<LinearLayoutxmlns:android="http://s android:textSize="25sp"/>02_拖动到底部的时候显1_拖动到底部显示加 布

*//滑动到最后一个可以看到的ItemisLoadingMore=true;footerView.setPadding(0,000);if(mOnRefreshListener!=null){mOnRefreshListener.onLoadi}}}}publicvoidonScroll(AbsListViewview,intintvisibleItemCount,inttotalItemCount)}*publicinterfacepublicvoidpublicvoid}publicvoidonRefreshFinish(booleanfooterView.setPadding(0,-footerViewHeight,0,0);isLoadingMore=false;refreshHeaderView.setPadding(0,-headerViewHeight,0,0);currentState=PULL_DOWN_REFRESH;}}}2_联网请求加 数@authorpublicclassTabDetailPagerextendsDetailBasePagerprivateNewCenterTagprivateStringprotectedbooleanisLoadingMore=publicViewinitView()Viewview=View.inflate(mActivity,R.layout.tab_detail,publicvoid{isPullDownRefreshing=true;}publicvoidonLoadingMore(),"没有数据了",1).show();}}return}*加载数protectedvoidgetMoreDataFromNet()HttpUtilshttpUtils=newHttpUtils();httpUtils.send(HttpMethod.GET,moreUrl,new isLoadingMore=}publicvoidonFailure(HttpExceptionerror,String{mListView.onRefreshFinish(false);System.out.println("加载数据失败："+msg);}}@paramprotectedvoidprocessData(String{TabDetailBeanbean=0).title);topnews=bean.data.topnews;TabDetailAdapteradapter=newTabDetailAdapter();//把所有的View清除Viewpoint=newView(mActivity);LayoutParamsparams=newLayoutParams(5,5);params.leftMargin=}玩转玩转Android—————————————————————————— }previousPointPosition=newsListsbean.data.news;listViewAdapter=newListViewAdapter(); ListView中isLoadingMore=List<News>moreDataNews=bean.data.news;}}@paramprivateTabDetailBeanparserJson(Stringjson)Gsongson=newTabDetailBeanbean=gson.fromJson(json,TabDetailBean.class);moreUrl=bean.data.more;moreUrl=null;moreUrl=}return}publicvoidonPageScrollStateChanged(intarg0)//TODOAuto-generatedmethod}publicvoidonPageScrolled(intarg0,floatarg1,intarg2)//TODOAuto-generatedmethod}} 01_设置点击某一条后变1_以数组方式记录点击后 *ID数组privateStringREAD_NEWS_ID_ARRAY_KEY=publicViewinitView()Viewview=View.inflate(mActivity,R.layout.tab_detail,publicvoidonItemClick(AdapterView<?>parent,Viewintposition,longid)intrealPosition=position-NewsnewsItem=题组后边加上当前的id,并且保存起来。StringreadNewsIdArray=CacheUitls.getString(mActivity,READ_NEWS_ID_ARRAY_KEY,"");//StringcurrentValues=//currentValues=newsItem.id+",//currentValues=readNewsIdArray+newsItem.id+",StringcurrentValues=readNewsIdArray+newsItem.id+",

}}return}2_适配器classListViewAdapterextendspublicViewgetView(intposition,ViewconvertView,ViewGroupparent)StringreadNewsIdArray=CacheUitls.getString(mActivity,READ_NEWS_ID_ARRAY_KEY,"");}return}}02_详情页1_创 详情页面NewsDetailActivity数据接*详情页@author*publicclassNewsDetailActivityextendsActivityprotectedvoidonCreate(BundlesavedInstanceState)Stringurl=getIntent().getStringExtra("url");}}Intentintent=newIntent(mActivity,NewsDetailActivity.class);intent.putExtra("url",newsItem.url);2_创 详情页面布局文1_详情页面布局文件<LinearLayoutxmlns:android="http://s android:layout_height="match_parent"/> android:background="@drawable/title_red_bg">android:textSize="23sp"/> "/>android:visibility="gone"/>android:orientation="horizontal">android:visibility="gone"/>android:visibility="gone"/> 代码初始化布局文*详情页@author{privateStringurl;protectedvoidonCreate(Bundle{super.onCreate(savedInstanceState);url=getIntent().getStringExtra("url");}privatevoidinitView()WebViewwebView=(WebView)}publicvoidonClick(Viewv)switch(v.getId())case}}}4_设置加<LinearLayoutxmlns:android="http://s android:layout_height="wrap_content"/>

privatevoidinitView()finalProgressBarprogressBar=(ProgressBar)WebViewwebView=(WebView)publicvoidonPageFinished(WebViewview,String{super.onPageFinished(view,url);}}5_设置支持 语WebSettingssetting=//设置支持javaScript6_设置支持双击缩放protectedvoidonCreate(Bundle{super.onCreate(savedInstanceState);== }WebSettingssetting=//设置支持javaScript5_webview字体大小修改-*详情页*@author*{privateStringprivateintcurrentSelectTextSize=privateinttempSelectTextSize=privateWebSettingspublicvoidonClick(Viewv)switch(v.getId())caseR.id.ib_news_detail_text_size://设置文字大小case}}