How to open image in full screen by clicking on listview in android tutorial app -

the following got till now. bug whenever click on listitem following error occurs

unfortunately app has stopped working

listviewadapter.class

public class listviewadapter extends baseadapter {  protected static long[] itemvie;     // declare variables    context context;  layoutinflater inflater;   arraylist<hashmap<string, string>> data;   imageloader imageloader;   hashmap<string, string> resulta = new hashmap<string, string>();    public listviewadapter(context context,   arraylist<hashmap<string, string>> arraylist) {   this.context = context;     data = arraylist;   imageloader = new imageloader(context);   }    @override   public int getcount() {   return data.size();     }      @override   public object getitem(int position) {         return null;     }      @override   public long getitemid(int position) {       return 0;     }      @suppresslint("viewholder")   public view getview(final int position, view convertview, viewgroup parent) {         // declare variables   textview albname;   imageview portimages;    inflater = (layoutinflater) context                     .getsystemservice(context.layout_inflater_service);    view itemvie = inflater.inflate(r.layout.list_item, parent, false);         // position      resulta = data.get(position);         // locate textviews in listview_item.xml   albname = (textview) itemvie.findviewbyid(r.id.name);   portimages = (imageview) itemvie.findviewbyid(r.id.portimg);   albname.settext(resulta.get(portfolio.tag_title));   imageloader.displayimage(resulta.get(portfolio.tag_image), portimages);      // capture listview item click     itemvie.setonclicklistener(new onclicklistener() {          @override         public void onclick(view arg0) {   resulta = data.get(position);          intent intent = new intent(context, fullscreenimage.class);    intent.putextra("albname", resulta.get(portfolio.tag_title));                 intent.putextra("portimages",resulta.get(portfolio.tag_image));   context.startactivity(intent);           }     });   return itemvie;     } } 

fullscreenimage.class

package com.example.truzzapp; public class fullscreenimage extends activity implements onitemselectedlistener {  imageview image; textview txt; string port_name; string port_image; progressdialog pdialog; imageloader imageloader = new imageloader(this);  protected void oncreate(bundle savedinstancestate) {        setcontentview(r.layout.fullimage);         intent = getintent();   port_name = i.getstringextra("albname"); 

port_image = i.getstringextra("portimages");

  txt = (textview) findviewbyid(r.id.portheading);            image = (imageview) findviewbyid(r.id.portfullimage);      txt.settext(port_name);            imageloader.displayimage(port_image, image);         }   @override public void onitemselected(adapterview<?> arg0, view arg1, int arg2,         long arg3) {     // todo auto-generated method stub  }  @override public void onnothingselected(adapterview<?> arg0) {     // todo auto-generated method stub  }  } 

logcat error

12-02 13:42:45.725: e/androidruntime(1129): fatal exception: main 12-02 13:42:45.725: e/androidruntime(1129): android.app.supernotcalledexception: activity {com.example.truzzapp/com.example.truzzapp.fullscreenimage} did not call through super.oncreate() 12-02 13:42:45.725: e/androidruntime(1129):     @ android.app.activitythread.performlaunchactivity(activitythread.java:2025) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.app.activitythread.handlelaunchactivity(activitythread.java:2084) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.app.activitythread.access$600(activitythread.java:130) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.app.activitythread$h.handlemessage(activitythread.java:1195) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.os.handler.dispatchmessage(handler.java:99) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.os.looper.loop(looper.java:137) 12-02 13:42:45.725: e/androidruntime(1129):     @ android.app.activitythread.main(activitythread.java:4745) 12-02 13:42:45.725: e/androidruntime(1129):     @ java.lang.reflect.method.invokenative(native method) 12-02 13:42:45.725: e/androidruntime(1129):     @ java.lang.reflect.method.invoke(method.java:511) 12-02 13:42:45.725: e/androidruntime(1129):     @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:786) 12-02 13:42:45.725: e/androidruntime(1129):     @ com.android.internal.os.zygoteinit.main(zygoteinit.java:553) 12-02 13:42:45.725: e/androidruntime(1129):     @ dalvik.system.nativestart.main(native method) 

pay attention logcat : did not call through super.oncreate()

you forgot call super.oncreate(savedinstancestate); before setcontentview