android - How do i get the position of a URL in an array? -

what i'm trying achieve obtain url received instagram , pass array position onlick listener each corresponding photo in grid view.

here code:

mainactivity.java

public class mainactivity extends activity { private instagramsession minstagramsession; private instagram minstagram;  private progressbar mloadingpb; private gridview mgridview;  private static final string client_id = "83549f9eb76f4a5b90daf6e4e14da107"; private static final string client_secret = "6df26b0c8f664323a07126bfe8511651"; private static final string redirect_uri = "http://www.yahoo.com";  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      minstagram          = new instagram(this, client_id, client_secret, redirect_uri);      minstagramsession   = minstagram.getsession();      if (minstagramsession.isactive()) {         setcontentview(r.layout.activity_user);          instagramuser instagramuser = minstagramsession.getuser();          mloadingpb  = (progressbar) findviewbyid(r.id.pb_loading);         mgridview   = (gridview) findviewbyid(r.id.gridview);          ((textview) findviewbyid(r.id.tv_name)).settext(instagramuser.fullname);         ((textview) findviewbyid(r.id.tv_username)).settext(instagramuser.username);          ((button) findviewbyid(r.id.btn_logout)).setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view arg0) {                 minstagramsession.reset();                  startactivity(new intent(mainactivity.this, mainactivity.class));                  finish();             }         });          imageview useriv = (imageview) findviewbyid(r.id.iv_user);          displayimageoptions displayoptions = new displayimageoptions.builder()                 .showimageonloading(r.drawable.ic_user)                 .showimageforemptyuri(r.drawable.ic_user)                 .showimageonfail(r.drawable.ic_user)                 .cacheinmemory(true)                 .cacheondisc(false)                 .considerexifparams(true)                 .build();          imageloaderconfiguration config = new imageloaderconfiguration.builder(this)                 .writedebuglogs()                 .defaultdisplayimageoptions(displayoptions)                 .build();          imageloader imageloader = imageloader.getinstance();         imageloader.init(config);          animatefirstdisplaylistener animate  = new animatefirstdisplaylistener();          imageloader.displayimage(instagramuser.profilpicture, useriv, animate);          new downloadtask().execute();      } else {         setcontentview(r.layout.activity_main);          ((button) findviewbyid(r.id.btn_connect)).setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view arg0) {                 minstagram.authorize(mauthlistener);             }         });     } }  private void showtoast(string text) {     toast.maketext(getapplicationcontext(), text, toast.length_long).show(); }  private instagram.instagramauthlistener mauthlistener = new instagram.instagramauthlistener() {     @override     public void onsuccess(instagramuser user) {         finish();          startactivity(new intent(mainactivity.this, mainactivity.class));     }      @override     public void onerror(string error) {         showtoast(error);     }      @override     public void oncancel() {         showtoast("ok. maybe later?");      } };  public static class animatefirstdisplaylistener extends simpleimageloadinglistener {      static final list<string> displayedimages = collections.synchronizedlist(new linkedlist<string>());      @override     public void onloadingcomplete(string imageuri, view view, bitmap loadedimage) {         if (loadedimage != null) {             imageview imageview = (imageview) view;             boolean firstdisplay = !displayedimages.contains(imageuri);             if (firstdisplay) {                 fadeinbitmapdisplayer.animate(imageview, 500);                 displayedimages.add(imageuri);             }         }     } }    arraylist<string> photolist;    public class downloadtask extends asynctask<url, integer, long> {      protected void oncancelled() {      }      protected void onpreexecute() {      }      protected long doinbackground(url... urls) {         long result = 0;          try {             list<namevaluepair> params = new arraylist<namevaluepair>(1);              params.add(new basicnamevaluepair("count", "20"));              instagramrequest request = new instagramrequest(minstagramsession.getaccesstoken());             string response          = request.createrequest("get", "/users/21846697/media/recent", params);              if (!response.equals("")) {                 jsonobject jsonobj  = (jsonobject) new jsontokener(response).nextvalue();                 jsonarray jsondata  = jsonobj.getjsonarray("data");                  int length = jsondata.length();                  if (length > 0) {                     photolist = new arraylist<string>();                      (int = 0; < length; i++) {                         jsonobject jsonphoto = jsondata.getjsonobject(i).getjsonobject("images").getjsonobject("standard_resolution");                          photolist.add(jsonphoto.getstring("url"));                      }                 }             }         } catch (exception e) {             e.printstacktrace();         }          return result;     }      protected void onprogressupdate(integer... progress) {     }      protected void onpostexecute(long result) {         mloadingpb.setvisibility(view.gone);          if (photolist == null) {             toast.maketext(getapplicationcontext(), "no photos available", toast.length_long).show();         } else {             displaymetrics dm = new displaymetrics();              getwindowmanager().getdefaultdisplay().getmetrics(dm);              int width   = (int) math.ceil((double) dm.widthpixels / 2);             width=width-50;             int height  = width;              photolistadapter adapter = new photolistadapter(mainactivity.this);              adapter.setdata(photolist);             adapter.setlayoutparam(width, height);             mgridview.setonitemclicklistener(new onitemclicklistener() {                    @override                   public void onitemclick(adapterview<?> parent, view view,                                           int position, long id) {                       // maybe you'll have cast string, i'm writing directly in                       string url = (string) parent.getadapter().getitem(position);                       intent myintent=new intent(mainactivity.this, fullscreenimageview.class).putextra("selectedimageurl", position);                       startactivity(myintent);                   }               });              mgridview.setadapter(adapter);           }     } } } 

photolistadapter.java

public class photolistadapter extends baseadapter { private context mcontext;  private imageloader mimageloader; private animatefirstdisplaylistener manimator;  private arraylist<string> mphotolist;  private int mwidth; private int mheight;  public photolistadapter(context context) {     mcontext = context;      displayimageoptions displayoptions = new displayimageoptions.builder()             .showimageonloading(r.drawable.instagram_logo)             .showimageforemptyuri(r.drawable.instagram_logo)             .showimageonfail(r.drawable.instagram_logo)             .cacheinmemory(true)             .cacheondisc(false)             .considerexifparams(true)             .build();      imageloaderconfiguration config = new imageloaderconfiguration.builder(context)             .writedebuglogs()             .defaultdisplayimageoptions(displayoptions)             .build();      mimageloader = imageloader.getinstance();     mimageloader.init(config);      manimator  = new animatefirstdisplaylistener(); }  public void setdata(arraylist<string> data) {     mphotolist = data; }  public void setlayoutparam(int width, int height) {     mwidth  = width;     mheight = height; }  @override public int getcount() {     return (mphotolist == null) ? 0 : mphotolist.size(); }  @override public object getitem(int position) {     return null; }  @override public long getitemid(int position) {     return 0; }  @override public view getview(int position, view convertview, viewgroup parent) {     imageview imageiv;      if (convertview == null) {         imageiv = new imageview(mcontext);          imageiv.setlayoutparams(new gridview.layoutparams(mwidth, mheight));         imageiv.setscaletype(imageview.scaletype.center_inside);         imageiv.setpadding(0, 0, 0, 0);     } else {         imageiv = (imageview) convertview;     }      mimageloader.displayimage(mphotolist.get(position), imageiv, manimator);      return imageiv; } } 

fullscreenimageview.java

        import android.app.activity;  public class fullscreenimageview extends activity {  string imageurl = getintent().getstringextra("selectedimageurl");  } 

the workflow of gridview understood have adapter populate view.

what getitem(int position) returns url which, if understood, contained in mphotolist. like:

  @override public object getitem(int position) {     return mphotolist.get(position); } 

and use need this:

@override            public void onitemclick(adapterview<?> parent, view view,                                     int position, long id) {                 // maybe you'll have cast string, i'm writing directly in                 string url = parent.getadapter().getitem(position)                 intent myintent=new intent(mainactivity.this, fullscreenimageview.class).putextra("selectedimageurl", url);                 startactivity(myintent);             }         }); 

hope helps.