android - Launching an activity from the ListView -

public class listitem {    public int sname; public int s_img; public string sid;  }   class xyz extends listactivity { . . . protected void onlistitemclick(listview l, view v, int position, long id)  {         //super.onlistitemclick(l, v, position, id);            toast.maketext(listpage.this,items.get(position).sid,toast.length_short).show();       intent intent = new intent(v.getcontext(),displayscheme.class);       startactivityforresult(intent,0); } } 

i wish start new activity above xyz class. activity should start when 1 of items on list clicked. in next activity, wish display further details of "listitem" object viz. s_img , sname; there way pass on clicked listitem object next displayscheme activity ? coz there no way in next activity find out item clicked in earlier activity. in advance.

.............. edited ...............

protected void onlistitemclick(listview l, view v, int position, long id)      {      //super.onlistitemclick(l, v, position, id);             toast.maketext(listpage.this, items.get(position).sid, toast.length_short).show();     intent intent = new intent(v.getcontext(),displayscheme.class);     intent.putextra("positionidentifier",v.gettag());     startactivityforresult(intent,0);     } 

this edited onlistitemclick. getting error on "intent.putextra" line says "the method putextra(string, boolean) in type intent not applicable arguments (string, object)"

................. more edits.. arrayadapter................

public class myadapter extends baseadapter {    layoutinflater inflater; list<listitem> items;  public myadapter(activity context, list<listitem> items)  {       super();      this.items = items;     this.inflater = (layoutinflater)context.getsystemservice(context.layout_inflater_service); }  @override   public int getcount()  {       // todo auto-generated method stub       return items.size();   }    @override   public object getitem(int position)  {       // todo auto-generated method stub       return null;   }    @override   public long getitemid(int position)  {       // todo auto-generated method stub       return 0;   }  @override   public view getview(final int position, view convertview, viewgroup parent)  {        listitem item = items.get(position);     view vi=convertview;      if(convertview==null)         vi = inflater.inflate(r.layout.list_row, null);      imageview imgv = (imageview)vi.findviewbyid(r.id.s_name);      imgv.setimageresource(item.sname);                     return vi;   } } 

this myadapter class, need make changes "settag()" or dat ?

this, looks good:

toast.maketext(listpage.this,items.get(position).sid,toast.length_short).show(); intent intent = new intent(v.getcontext(),displayscheme.class); startactivityforresult(intent,0); 

but, instead of using v.getcontext() suggest using this: xyz.this.

also, if not expecting result displayscheme activity, there no need use startactivityforresult(). should use startactivity() , pass intent instance it.

if need send data intent, simple intent.putextra(some_key_name, the_value_you_want_to send); you.

you don't need use startactivityforresult() if want send data activity. use when want fetch result activity.

edit:

okay, in activity should have corresponding list<listitem> items; gather data , pass adapter right? still haven't posted code activity. see if helps. may have play around right.

toast.maketext(listpage.this,items.get(position).sid,toast.length_short).show(); intent intent = new intent(v.getcontext(),displayscheme.class); intent.putextra("some_key_name", items.get(position).sname; startactivityforresult(intent,0); 

if using pojo (a setter , getter) handle data before passing list<listitem> items;, posting , details activity can more.