android - ViewPager Indicator with custom ListView -

first, apologise english since it's not good. thanks. application contains few listwiews adapters. data listviews taken parsed xml file located in internet. have 1 tabhost 3 tabs , different listviews in each tab. want change tabhost new , slighty method - viewpager indicator jake wharton (https://github.com/jakewharton/android-viewpagerindicator), 'cause there awsome sliding effect.

i tried include code in sample project , it's running good. have listview in 1 fragment of viewpager , simple textview in 2 others fragments. it's working.

code of viewpageradapter shown below:

package com.formatbce.pager;  import java.util.arraylist; import java.util.hashmap; import java.util.list; import java.util.map;  import android.content.context; import android.os.parcelable; import android.support.v4.view.pageradapter; import android.support.v4.view.viewpager; import android.view.view; import android.widget.abslistview; import android.widget.abslistview.onscrolllistener; import android.widget.listview; import android.widget.simpleadapter; import android.widget.textview;  import com.viewpagerindicator.titleprovider;  public class viewpageradapter extends pageradapter implements titleprovider {     private int[] scrollposition = new int[titles.length]; private static string[] titles = new string[] {     "news",     "bio",     "music" }; private final context context;  public viewpageradapter( context context ) {     this.context = context;     ( int = 0; < titles.length; i++ )     {         scrollposition[i] = 0;     } }  @override public string gettitle( int position ) {     return titles[ position ]; }  @override public int getcount() {     return titles.length; }  @override public object instantiateitem( view pager, final int position ) {     if (position == 0) {      listview v = new listview( context );         string[] = new string[] { "str" };         int[] = new int[] { android.r.id.text1 };         list<map<string, string>> items =             new arraylist<map<string, string>>();         ( int = 0; < 20; i++ )         {             map<string, string> map =                 new hashmap<string, string>();             map.put( "str", string.format( "item %d", + 1 ) );             items.add( map );         }         simpleadapter adapter = new simpleadapter( context, items,             android.r.layout.simple_list_item_1, from, );         v.setadapter( adapter );         ( (viewpager) pager ).addview( v, 0 );         v.setonscrolllistener( new onscrolllistener()         {              @override             public void onscroll( abslistview view,                 int firstvisibleitem,                 int visibleitemcount,                 int totalitemcount )             {                 scrollposition[ position ] = firstvisibleitem;             }                @override             public void onscrollstatechanged(abslistview view,                     int scrollstate) {                 // todo auto-generated method stub              }         } );         return v;}     else {         textview v = new textview( context );         v.settext( titles[ position ] );         ((viewpager)pager).addview( v, 0 );         return v;     } }  @override public void destroyitem( view pager, int position, object view ) {     if (position == 0){     ( (viewpager) pager ).removeview( (listview) view );}     else {     ( (viewpager) pager ).removeview( (textview) view );}  }  @override public boolean isviewfromobject( view view, object object ) {     return view.equals( object ); }  @override public void finishupdate( view view ) {}  @override public void restorestate( parcelable p, classloader c ) {}  @override public parcelable savestate() {     return null; }  @override public void startupdate( view view ) {} } 

so, sample listview good.

but problems starting, when try put there custom listview. in old project listview has code:

package com.formatbce.mdrive;  import java.util.arraylist; import android.app.alertdialog; import android.app.listactivity; import android.app.progressdialog; import android.content.context; import android.content.dialoginterface; import android.content.intent; import android.os.asynctask; import android.os.bundle; import android.view.view; import android.widget.listview;  public class concerts extends listactivity {  private arraylist<rss_postitem> messages; private rss_postadapter adapter;  @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     if (savedinstancestate != null) {         messages = savedinstancestate.getparcelablearraylist("messages");         adapter = new rss_postadapter(concerts.this, r.layout.post_entry,                 messages);         setlistadapter(adapter);     } else         new getparserresult().execute(); }  @override protected void onlistitemclick(listview l, view v, int position, long id) {     super.onlistitemclick(l, v, position, id);     intent postactivity = new intent(this, rss_postactivity.class);     bundle store = new bundle();     store.putstring("title", messages.get(position).title);     store.putstring("description", messages.get(position).description);     store.putstring("link", messages.get(position).link);     postactivity.putextras(store);     startactivity(postactivity); }  protected void onsaveinstancestate(bundle savedinstancestate) {     super.onsaveinstancestate(savedinstancestate);     savedinstancestate.putparcelablearraylist("messages", messages); }  private class getparserresult extends         asynctask<context, integer, arraylist<rss_postitem>> {     private progressdialog loadingdialog;     private concerts_parser parser;      protected void onpreexecute() {         parser = new concerts_parser();         loadingdialog = progressdialog.show(concerts.this, "",                 "loading concerts list...", true);     }      @override     protected arraylist<rss_postitem> doinbackground(context... arg0) {         return parser.parse();     }      protected void onpostexecute(arraylist<rss_postitem> result) {         if (result == null) {             alertdialog.builder builder = new alertdialog.builder(                     concerts.this);             builder.setmessage(                     "cannot load list... \nis internet on?")                     .setcancelable(false)                     .setpositivebutton("ok",                             new dialoginterface.onclicklistener() {                                 public void onclick(dialoginterface dialog,                                         int id) {                                     dialog.cancel();                                     loadingdialog.dismiss();                                 }                             });             alertdialog alert = builder.create();             alert.show();         } else {             messages = result;             loadingdialog.dismiss();             adapter = new rss_postadapter(concerts.this,                     r.layout.post_entry, messages);             setlistadapter(adapter);         }     } }    } 

so don't understand, how put correctly in viewpager code. tried set listfragment, it's pretty new me, can't working.

google can't me too, same various developer forums.

truly, question is: how custom listview shown in viewpager?

thank you, i'm hope you're help.

upd:

thanks first answer, tried convert 1 of activities fragment tutorial: http://www.e-nature.ch/tech/?p=55.

first @ all, 1 error couldn't pass: variable isn't converted, , don't know, how working.

dm = (downloadmanager) getsystemservice(download_service); 

now 1 other thing: when tried put result fragment fragmentpageradapter - stuck finding correct code here:

@override public fragment getitem(int arg0) {     // todo auto-generated method stub     return ?????????; } 

tell me, please, method have return? thanks!

you said

i have 1 tabhost 3 tabs, , different listview in each tab

i assume u have 3 different listactivity , passed tabhost. convert 3 activity 3 fragments.

based on folllowing sample code change viewpageradapter

class googlemusicadapter extends fragmentpageradapter implements         titleprovider {     public googlemusicadapter(fragmentmanager fm) {         super(fm);     }      @override     public fragment getitem(int position) {                     if(position ==0 )         // return fragment1                      else if(position==1)                     // return fragment2                     else                     // return fragment3     }      @override     public int getcount() {         return 3;     }      @override     public string gettitle(int position) {         if(position ==0 )                     return "one"                     else if(position ==1)                     return "two"                     else                     return "three"     } }