How to use Android ListView Baseadapter

Usually we have a fixed pattern when we use our own custom adapter. Take advantage of the way convertview+ caches.

Private arraylist<listbean> list;p rivate layoutinflater minflater;public detaillistadapter (context context, Arraylist<listbean> list) {This.list=list;minflater = Layoutinflater.from (context);} @Overridepublic int GetCount () {//TODO auto-generated method Stubreturn list = = null? 0:list.size ();} @Overridepublic Object getItem (int position) {//TODO auto-generated method Stubreturn position;} @Overridepublic long Getitemid (int position) {return position;}  @Overridepublic view GetView (int position, view Convertview, ViewGroup parent) {Viewholder holder = null;if (Convertview = = NULL) {Convertview = minflater.inflate (r.layout.search_info_item_layout, null); holder = new Viewholder (); holder. Timetxt = (TextView) Convertview.findviewbyid (R.ID.TIME_TV); holder. Addresstxt = (TextView) Convertview.findviewbyid (R.ID._ADDRESS_TV); holder.processflagtxt = (TextView) Convertview.findviewbyid (R.ID.PROCESS_FLAG_TV); Convertview.settag (holder);} Else{holder = (Viewholder) Convertview.gettag ();} Holder. TImetxt.settext (List.get (position). GetTime ()); holder. Addresstxt.settext (List.get (position). GetAddress ()); Holder.processFlagTxt.setText (List.get (position). GetState ( ); return Convertview;} Class Viewholder{textview Timetxt; TextView Addresstxt; TextView processflagtxt;}}

Recently, do Baidu map offline download time, found a new way, very want to know how the Android program of Baidu Ape is how to write code. In a careful look, there is a very big difference indeed.

From the Baidu map offline download demo

Private Arraylist<mkolupdateelement> localmaplist = Null;public Class Localmapadapter extends Baseadapter {@ overridepublic int GetCount () {return localmaplist.size ();} @Overridepublic Object getItem (int index) {return localmaplist.get (index);} @Overridepublic long getitemid (int index) {return index;} @Overridepublic view GetView (int index, view view, ViewGroup arg2) {mkolupdateelement e = (mkolupdateelement) GetItem (Inde x); view = View.inflate (offlinedemo.this,r.layout.offline_localmap_list, null); Initviewitem (view, E); return view;} void Initviewitem (view view, Final Mkolupdateelement e) {button display = (Button) View.findviewbyid (R.id.display); Button remove = (Button) View.findviewbyid (R.id.remove); TextView title = (TextView) View.findviewbyid (r.id.title); TextView update = (TextView) View.findviewbyid (r.id.update); TextView ratio = (TextView) View.findviewbyid (r.id.ratio) ratio.settext (e.ratio + "%"); Title.settext (e.cityname); if ( E.update) {Update.settext ("updatable");} else {Update.settexT ("Newest");} if (e.ratio! =) {display.setenabled (false);} else {display.setenabled (true);} Remove.setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View arg0) {moffline.remove (E.cityid); Updateview ();}}); Display.setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View v) {Intent Intent = new Intent (); Intent.putextra ("x", E.geopt.longitude); Intent.putextra ("Y", e.geopt.latitude); Intent.setclass (OfflineDemo.this, Basemapdemo.class); startactivity (intent);}});}

How to use Android ListView Baseadapter