Android: arrayAdapter throwing null pointer exception? -


i'm having issues array adapter.

this in lessonnoteslist class:

     mydb = new dbhelper(this);     //creating arraylist of contacts data     arraylist array_list = mydb.getalllessonnotes();     //creating array adapter manipulate contacts data listview     arrayadapter arrayadapter = new arrayadapter(this,r.layout.list_layout, array_list);     //adding contacts list view.     lessonnote = (listview)findviewbyid(r.id.listview1);     lessonnote.setadapter(arrayadapter);     //setting onclicklistener process user's actions     lessonnote.setonitemclicklistener(new onitemclicklistener() {         @override         public void onitemclick(adapterview<?> arg0, view arg1, int arg2, long arg3) {             // todo auto-generated method stub              //prepare data listview item passed new activity             //arg2 increased 1 0 based index contacts table in database works of base index of 1              int id_to_search = value;             //bundle extras = getintent().getextras();             bundle databundle = new bundle();             databundle.putint("id", id_to_search);             log.d("id ^&*: ", string.valueof(id_to_search));             //create new intent open displaycontact activity             intent intent = new intent(getapplicationcontext(), com.example.ltss.dyslexia.app.lessonnotes.class);             intent.putextras(databundle);             startactivity(intent);         }     });

dbhelper class:

public arraylist getalllessonnotes() {     arraylist array_list = new arraylist();     sqlitedatabase db = this.getreadabledatabase();     cursor res =  db.rawquery( "select * "+table_lesson_notes, null);     res.movetofirst();     while(res.isafterlast() == false)     {         array_list.add(res.getstring(res.getcolumnindex(date)));         res.movetonext();     }     return array_list; }

the code crashes null pointer exception here:

lessonnote.setadapter(arrayadapter);

any ideas why happening? i've tried debugging , debugger telling me arrayadatper contains 1 entry should

i have same code different page , it's working 100% fine..

any suggestions welcome!

thanks

are sure line ?

lessonnote = (listview)findviewbyid(r.id.listview1);

it seems in layout xml, no view have "listview1" id.


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