Android is based on ListView to implement a similar market paging load effect sample _android

This article illustrates the Android based ListView implementation of a similar market paging load effect. Share to everyone for your reference, specific as follows:

In recent days research ListView implementation of paging load and rolling load, found that can be implemented using the ListView Onscroll method, directly on the code

Listviewscroll.java

Package zy.lucifer.ListViewScroll;
Import android.app.Activity;
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.Toast;
Import Android.widget.AbsListView.OnScrollListener;
Import Android.widget.LinearLayout.LayoutParams; The public class Listviewscroll extends activity {/** called the ' when the ' is the ' is ' the ' activity ' is a-created private layoutparams Mlayoutparams = new Linearlayout.layoutparams (LinearLayout.LayoutParams.WRAP_CONTENT, Linearlayout.layoutpara Ms.
  Wrap_content); /** * Set layout display target Maximization property/private Layoutparams fflayoutparams = new Linearlayout.layoutparams (linearlayout.lay
  Outparams.fill_parent, LinearLayout.LayoutParams.FILL_PARENT); ListviEW ListView;
  private int lastitem = 0;
  LinearLayout loadinglayout;
  Private Listviewadapter adapter;
    @Override public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.main);
    ListView = (ListView) Findviewbyid (r.id.mylist); LOG.I ("Test", "OnCreate (Bundle savedinstancestate) >>>>>>>>>>>>>>>")
    ;
    Linear layout LinearLayout layout = new LinearLayout (this);
    Set the horizontal direction of the layout layout.setorientation (linearlayout.horizontal);
    progress bar ProgressBar ProgressBar = new ProgressBar (this);
    The progress bar shows the position progressbar.setpadding (0, 0, 15, 0);
    Add the progress bar to the layout Layout.addview (ProgressBar, mlayoutparams);
    Text content TextView TextView = new TextView (this);
    Textview.settext ("Load ...");
    Textview.setgravity (gravity.center_vertical);
    Add the text to the layout Layout.addview (TextView, fflayoutparams); Set the gravity direction of the layout, that is, the alignment is layout.setgravity (gravity.
    CENTER);
    Set ListView Footer Layout loadinglayout = new LinearLayout (this);
    Loadinglayout.addview (layout, mlayoutparams);
    Loadinglayout.setgravity (Gravity.center);
    Listview.addfooterview (loadinglayout);
    adapter = new Listviewadapter ();
    Listview.setadapter (adapter); Listview.setonscrolllistener (New Onscrolllistener () {@Override public void onscroll (abslistview view, int fir Stvisibleitem, int visibleitemcount, int totalitemcount) {//TODO auto-generated method stub Lo G.I ("Test", "Scroll>>>first:" + Firstvisibleitem + ", Visible:" + VisibleItemCount + ", total:" + Totalitemco
        UNT);
        LastItem = Firstvisibleitem + visibleItemCount-1;
        LOG.I ("Test", "Scroll>>>lastitem:" + LastItem);
        Display 50 ListItem, 0-49, because the onscroll is triggered after the "slide" has been executed, so use adapter.count<=41 as the condition int scrolllength=101; if (adapter.count<=scrolllength) {if (firstvisibleitem+visibleitemcount==Totalitemcount) {adapter.count = 10;
            Adapter.notifydatasetchanged ();
            Listview.setselection (LastItem);
            int CURRENTPAGE=ADAPTER.COUNT/10;
          Toast.maketext (Getapplicationcontext (), "+currentpage+", "page", Toast.length_long). Show ();
        } else {Listview.removefooterview (loadinglayout); @Override public void onscrollstatechanged (Abslistview view, int scrollstate) {//TODO Auto
  -generated method stub}});
      Class Listviewadapter extends Baseadapter {int count = * 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) {log.i ("test", "Getview>>>pos:" + pos);
      TextView view; if (v = = null) {view = new TextView (LISTVIewscroll.this);
      else {view = (TextView) v;
      } view.settext ("ListItem" + pos);
      View.settextsize (20f);
      View.setgravity (Gravity.center);
      View.setheight (60);
    return view;

 }
  }
}

Main.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:orientation=" vertical "
  android:layout_width=" fill_parent "
  android:layout_" height= "Fill_parent"
  >
<listview android:cachecolorhint= "#00000000" android:id= "@+id/mylist
" Android:layout_width= "Fill_parent" android:layout_height= "Fill_parent"
    >
  </ListView>
< /linearlayout>

For more information on Android-related content readers can view the site: "Android View tips Summary", "Android Layout Layout Skills Summary", "Android graphics and image processing skills summary", "Android Development introduction and Advanced Course" , Android Debugging tips and FAQ Solutions Summary, Android Multimedia tips summary (audio, video, audio, etc.), "Android Basic Components Usage Summary" and "Android Control usage Summary"

I hope this article will help you with the Android program.