Listview drop-down load 1 (paging)

First, create a listview list in the main XML file. The Code is as follows:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    tools:context=".MainActivity" >    <ListView        android:id="@+id/menuList"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_weight="1" >    </ListView></LinearLayout>

 

Create two more XML files, including the list item (menu. XML) and the load interface (loadmore. XML)

The menu. XML Code is as follows:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >        <TextView        android:id="@+id/showView"        android:layout_width="fill_parent"         android:layout_height="wrap_content"        android:padding="10dp"        style="@style/normalText"        android:text="title"        />    <TextView         android:id="@+id/content"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:padding="10dp"        android:text="123"        /></LinearLayout>

 

Loadmore. xml

<? XML version = "1.0" encoding = "UTF-8"?> <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: Orientation = "horizontal"> <linearlayout Android: layout_width = "fill_parent" Android: layout_height = "wrap_content" Android: gravity = "center" Android: Background = "@ drawable/list_bg"> <progressbar Android: id = "@ + ID/progressbar1" Android: layout_width = "25dp" Android: layout_height = "25dp"/> <textview Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: text = "loading data... "/> </linearlayout>

 

Loadmore background style list_bg.xml:

<?xml version="1.0" encoding="utf-8"?>  <shape xmlns:android="http://schemas.android.com/apk/res/android">        <gradient             android:startColor="#ccc"             android:endColor="#ccc"             android:angle="45"        />  </shape>  

 

 

The entry code is as follows:

Package COM. TP. soft. APP; import Java. util. arraylist; import Java. util. list; import android. app. activity; import android. OS. bundle; import android. OS. handler; import android. util. log; import android. view. layoutinflater; import android. view. menu; import android. view. view; import android. view. view. onclicklistener; import android. view. viewgroup; import android. widget. abslistview; import android. widget. abslistview. onscrolllistener; import android. widget. baseadapter; import android. widget. listview; import android. widget. progressbar; import android. widget. textview; public class mainactivity extends activity {private listview mlistview; private view mloadmoreview; private progressbar mloadbtn; private pageadapter adapter; private handler = new handler (); @ override protected void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. activity_main); mloadmoreview = getlayoutinflater (). inflate (R. layout. loadmore, null); mloadbtn = (progressbar) mloadmoreview. findviewbyid (R. id. progressbar1); // mloadbtn. setonclicklistener (this); mlistview = (listview) findviewbyid (R. id. menulist); // scroll down to trigger the event mlistview. setonscrolllistener (New onscrolllistener () {@ override public void onscrollstatechanged (abslistview view, int scrollstate) {// If (scrollstate = onscrolllistener. scroll_state_idle) {// scroll to the bottom if (view. getlastvisibleposition () = view. getcount ()-1) {// mloadbtn. settext ("loading... "); myrunnable r = new myrunnable (); handler. postdelayed (R, 2000) ;}}@ override public void onscroll (abslistview view, int firstvisibleitem, int visibleitemcount, int totalitemcount) {}}); mlistview. addfooterview (mloadmoreview); List <string> itemlist = new arraylist <string> (); For (INT I = 0; I <10; I ++) {itemlist. add ("title" + I);} adapter = new pageadapter (itemlist); mlistview. setadapter (adapter) ;}@ override public Boolean oncreateoptionsmenu (menu) {getmenuinflater (). inflate (R. menu. main, menu); Return true;}/* @ override public void onclick (view v) {mloadbtn. settext ("loading... "); myrunnable r = new myrunnable (); handler. postdelayed (R, 2000);} */class myrunnable implements runnable {@ override public void run () {log. E ("prompt", "123"); loadmoredate (); // update the UI adapter. notifydatasetchanged (); // mloadbtn. settext ("view more... ") ;}} class pageadapter extends baseadapter {list <string> itemlist; Public pageadapter (list <string> itemlist) {This. itemlist = itemlist;} @ override public view getview (INT position, view convertview, viewgroup parent) {If (convertview = NULL) {convertview = layoutinflater. from (getapplicationcontext ()). inflate (R. layout. menu, null);} textview titleview = (textview) convertview. findviewbyid (R. id. showview); titleview. settext (itemlist. get (position); Return convertview;} @ override public long getitemid (INT position) {return position ;}@ override public object getitem (INT position) {return itemlist. get (position) ;}@ override public int getcount () {return itemlist. size ();} public void additem (string Str) {itemlist. add (STR) ;}} private void loadmoredate () {log. E ("Total", "" + adapter. getcount (); int COUNT = adapter. getcount (); For (INT I = count + 1; I <count + 10; I ++) {adapter. additem ("title" + I );}}}

 

Running result:

Listview drop-down load 1 (paging)