Segmented display and paging display of Android listview

Java code

Package COM. yangguangfu. listview; import android. app. listactivity; import android. OS. bundle; import android. util. log; import android. view. gravity; import android. view. view; import android. view. viewgroup; import android. widget. abslistview; import android. widget. baseadapter; import android. widget. linearlayout; import android. widget. listview; import android. widget. progressbar; import android. widget. textview; import android. widget. abslistview. onscrolllistener; import android. widget. linearlayout. layoutparams;/***** @ author AFU **/public class mainactivity extends listactivity implements onscrolllistener {Private Static final string tag = "mainactivity"; private listviewadapter adapter = new listviewadapter (); private int lastitem = 0;/*** set the layout to be as big as the target. */private layoutparams wclayoutparams = new linearlayout. layoutparams (linearlayout. layoutparams. wrap_content, linearlayout. layoutparams. wrap_content);/*** sets the maximum layout display target */private layoutparams fflayoutparams = new linearlayout. layoutparams (linearlayout. layoutparams. fill_parent, linearlayout. layoutparams. fill_parent); Private progressbar; protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); log. I (TAG, "oncreate (bundle savedinstancestate)"); // linear layout linearlayout layout = new linearlayout (this); // sets the layout horizontal direction layout. setorientation (linearlayout. horizontal); // progress bar progressbar = new progressbar (this); // progress bar shows the position progressbar. setpadding (0, 0, 15, 0); layout. addview (progressbar, wclayoutparams); textview = new textview (this); textview. settext ("loading... "); textview. setgravity (gravity. center_vertical); layout. addview (textview, fflayoutparams); layout. setgravity (gravity. center); linearlayout loadinglayout = new linearlayout (this); loadinglayout. addview (layout, wclayoutparams); loadinglayout. setgravity (gravity. center); // get a listview to display the entry listview = getlistview (); // Add it to the footer page to display the listview. addfooterview (loadinglayout); // registerforcontextmenu (listview); // setlistadapter (adapter); listview. setonscrolllistener (this);} public void onscroll (abslistview V, int firstvisibleitem, int visibleitemcount, int totalitemcount) {lastitem = firstvisibleitem + visibleitemcount-1; system. out. println ("lastitem:" + lastitem); log. I (TAG, "lastitem:" + lastitem);} public void onscrollstatechanged (abslistview V, int state) {If (lastitem = adapter. count & State = onscrolllistener. scroll_state_idle) {adapter. count + = 10; adapter. yydatasetchanged (); log. I (TAG, "lastitem:" + lastitem) ;}/ *** use it to generate display data * @ author AFU **/class listviewadapter extends baseadapter {int COUNT = 10; public int getcount () {log. I (TAG, "Count:" + count); Return count;} public object getitem (INT POS) {log. I (TAG, "POS:" + POS); return Pos;} public long getitemid (INT POS) {return Pos;} public view getview (INT POs, view V, viewgroup p) {textview view = new textview (mainactivity. this); view. settext ("AFO player" + POS); log. I (TAG, "entry:" + POS); view. settextsize (20f); view. setheight (80); Return view ;}}}

Java code

Package COM. yangguangfu. listview; import android. app. listactivity; import android. OS. bundle; import android. util. log; import android. view. gravity; import android. view. view; import android. view. viewgroup; import android. widget. abslistview; import android. widget. baseadapter; import android. widget. button; import android. widget. linearlayout; import android. widget. listview; import android. widget. textview; import android. widget. linearlayout. layoutparams;/***** @ author AFU **/public class buttonloadingactivity extends listactivity {Private Static final string tag = "buttonloadingactivity"; private listviewadapter adapter = new listviewadapter (); /*** set the layout to show the target size */private layoutparams wclayoutparams = new linearlayout. layoutparams (linearlayout. layoutparams. wrap_content, linearlayout. layoutparams. wrap_content);/*** sets the maximum layout display target */private layoutparams fflayoutparams = new linearlayout. layoutparams (linearlayout. layoutparams. fill_parent, linearlayout. layoutparams. fill_parent); protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); log. I (TAG, "oncreate (bundle savedinstancestate):"); linearlayout layout = new linearlayout (this); layout. setorientation (linearlayout. horizontal); button = new button (this); button. settext ("click to load five items... "); button. setgravity (gravity. center_vertical); layout. addview (button, fflayoutparams); layout. setgravity (gravity. center); linearlayout loadinglayout = new linearlayout (this); loadinglayout. addview (layout, wclayoutparams); loadinglayout. setgravity (gravity. center); listview = getlistview (); listview. addfooterview (loadinglayout); button. setonclicklistener (New button. onclicklistener () {@ override public void onclick (view v) {adapter. count + = 5; log. I (TAG, "setonclicklistener:" + adapter. count); adapter. notifydatasetchanged () ;}}); setlistadapter (adapter) ;}public void onscrollstatechanged (abslistview V, int s) {log. I (TAG, "onscrollstatechanged (abslistview V, int s)");} class listviewadapter extends baseadapter {int COUNT = 10;/* starting amount */Public int getcount () {return count;} public object getitem (int pos) {return Pos;} public long getitemid (int pos) {return Pos;} public view getview (INT POs, view V, viewgroup p) {textview = new textview (buttonloadingactivity. this); textview. setheight (80); textview. settextsize (20); textview. settext ("AFO player" + POS); log. I (TAG, "getview: pos:" + POS); return textview ;}}}

From: http://yangguangfu.iteye.com/blog/832809