android remove view from alertdialog -


hi have mainactivity class have listview populated rss items. when click on item list app shows me alertdialog can see in message box item details. problem after show alertdialog when close , open new item app crashes giving me error:

fatal exception: main.lang.illegalstateexception: specified child has parent. must call removeview() on child's parent first.

here java class:

protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          listview = (listview) findviewbyid(r.id.listview);          wv = new webview(this);          try {             url = new url("http://www.unikore.it/index.php/ingegneria-informatica-home?format=feed");         } catch (malformedurlexception e) {             e.printstacktrace();         }          new readrsstask().execute(url);          listview.setonitemclicklistener(new adapterview.onitemclicklistener() {             @override             public void onitemclick(adapterview<?> parent, view view, int position,long id) {                 optiondialog = new alertdialog.builder(mainactivity.this).create();                 optiondialog.settitle(listview.getitematposition(position).tostring());                 s = rssitems.get(position).getdescription();                 if(s.contains("href=")){                     s.substring(0,s.indexof("</div>"));                     wv.loaddata(s, "text/html", "utf-8");                     wv.setwebviewclient(new webviewclient() {                         @override                         public boolean shouldoverrideurlloading(webview view, string url) {                             view.loadurl(url);                             return true;                         }                     });                     optiondialog.setview(wv);                 }else {                     optiondialog.setmessage(s.replaceall("<[^>]*>", ""));                 }                 optiondialog.show();             }         });     }

i tried using optiondialog.dismiss() method app crashes anyway.

thanks

move instantiation of webview before accessing object.

s = rssitems.get(position).getdescription(); if(s.contains("href=")){    wv = new webview(this);   wv.loaddata(s, "text/html", "utf-8");   // other code

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