android - How to open browser as a foreground activity like some custom dialog? -

i using below code onclick of listview opens link in browser. there way open same browser in catchy small foreground activity custom dialog or popup ? has tried ?

public void onitemclick(adapterview<?> parent, view view, int pos, long id) {     intent = new intent(intent.action_view);     i.setdata(uri.parse(listitems.get(pos).getlink()));      activity.startactivity(i);  } 

thanks, advance

editing code per tarun suggestion :

public class listlistener extends activity implements onitemclicklistener {  // list item's reference list<rssitem> listitems; // calling activity reference activity activity;  public listlistener(list<rssitem> alistitems, activity anactivity) {     listitems = alistitems;     activity  = anactivity; }  /**  * start browser url rss item.  */ public void onitemclick(adapterview<?> parent, view view, int pos, long id) {     /*intent = new intent(intent.action_view);     i.setdata(uri.parse(listitems.get(pos).getlink()));     activity.startactivity(i);*/     alertdialog.builder alert = new alertdialog.builder(listlistener.this);      alert.settitle("title here");     webview wv = new webview(this);      wv.loadurl(listitems.get(pos).getlink());       wv.setwebviewclient(new webviewclient()     {         @override         public boolean shouldoverrideurlloading(webview view, string url)         {             view.loadurl(url);              return true;         }     });      alert.setview(wv);     alert.setnegativebutton("close", new dialoginterface.onclicklistener()     {         @override         public void onclick(dialoginterface dialog, int id)         {         }     });     alert.show();  } 

}

error :

07-22 13:18:43.465: e/androidruntime(22759): fatal exception: main 07-22 13:18:43.465: e/androidruntime(22759): java.lang.nullpointerexception 07-22 13:18:43.465: e/androidruntime(22759): @ android.content.contextwrapper.getapplicationinfo(contextwrapper.java:139) 07-22 13:18:43.465: e/androidruntime(22759): @ android.view.contextthemewrapper.gettheme(contextthemewrapper.java:65) 07-22 13:18:43.465: e/androidruntime(22759): @ android.app.alertdialog.resolvedialogtheme(alertdialog.java:142) 07-22 13:18:43.465: e/androidruntime(22759): @ android.app.alertdialog$builder.(alertdialog.java:359) 07-22 13:18:43.465: e/androidruntime(22759): @ com.itcuties.multicategoryrssreader.listeners.listlistener.onitemclick(listlistener.java:43) 07-22 13:18:43.465: e/androidruntime(22759): @ android.widget.adapterview.performitemclick(adapterview.java:298) 07-22 13:18:43.465: e/androidruntime(22759): @ android.widget.abslistview.performitemclick(abslistview.java:1283) 07-22 13:18:43.465: e/androidruntime(22759): @ android.widget.abslistview$performclick.run(abslistview.java:3074) 07-22 13:18:43.465: e/androidruntime(22759): @ android.widget.abslistview$1.run(abslistview.java:4147) 07-22 13:18:43.465: e/androidruntime(22759): @ android.os.handler.handlecallback(handler.java:615) 07-22 13:18:43.465: e/androidruntime(22759): @ android.os.handler.dispatchmessage(handler.java:92) 07-22 13:18:43.465: e/androidruntime(22759): @ android.os.looper.loop(looper.java:137) 07-22 13:18:43.465: e/androidruntime(22759): @ android.app.activitythread.main(activitythread.java:4898) 07-22 13:18:43.465: e/androidruntime(22759): @ java.lang.reflect.method.invokenative(native method) 07-22 13:18:43.465: e/androidruntime(22759): @ java.lang.reflect.method.invoke(method.java:511) 07-22 13:18:43.465: e/androidruntime(22759): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1008) 07-22 13:18:43.465: e/androidruntime(22759): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:775) 07-22 13:18:43.465: e/androidruntime(22759): @ dalvik.system.nativestart.main(native method)

alertdialog.builder alert = new alertdialog.builder(this);      alert.settitle("title here");     webview wv = new webview(this);      wv.loadurl("http:\\www.google.com");      wv.setwebviewclient(new webviewclient()     {         @override         public boolean shouldoverrideurlloading(webview view, string url)         {             view.loadurl(url);              return true;         }     });      alert.setview(wv);     alert.setnegativebutton("close", new dialoginterface.onclicklistener()     {         @override         public void onclick(dialoginterface dialog, int id)         {         }     });     alert.show();