android - Displaying pictures in a gridview -

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hi i'm trying display images using gridview. i'm getting error when import android.widget.adapterview.onitemclicklistener says main cannot resolved or not field. code below:

import import android.app.activity; import android.os.bundle; import android.view.view; import android.widget.adapterview; import android.widget.gridview; import android.widget.toast; import android.widget.adapterview.onitemclicklistener; //error here: main cannot resolved or not field  public class mainactivity extends activity {     /** called when activity first created. */     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);          gridview gridview = (gridview) findviewbyid(r.id.photogrid);         gridview.setadapter(new imageadapter(this));          gridview.setonitemclicklistener(new onitemclicklistener() {             public void onitemclick(adapterview<?> parent, view v, int position, long id) {                 toast.maketext(mainactivity.this, "" + position, toast.length_short).show();             }         });     }  }  package com.newapp;  import android.content.context; import android.view.view; import android.view.viewgroup; import android.widget.baseadapter; import android.widget.gridview; import android.widget.imageview;  public class imageadapter extends baseadapter{      private context mcontext;  public imageadapter(context c) {     mcontext = c; }  public int getcount() {     return mthumbids.length; }  public object getitem(int position) {     return null; }  public long getitemid(int position) {     return 0; }  // create new imageview each item referenced adapter public view getview(int position, view convertview, viewgroup parent) {     imageview imageview;     if (convertview == null) {  // if it's not recycled, initialize attributes         imageview = new imageview(mcontext);         imageview.setlayoutparams(new gridview.layoutparams(85, 85));         imageview.setscaletype(imageview.scaletype.center_crop);         imageview.setpadding(8, 8, 8, 8);     } else {         imageview = (imageview) convertview;     }      imageview.setimageresource(mthumbids[position]);     return imageview; }  // references our images private integer[] mthumbids = {          r.drawable.sample_0, r.drawable.sample_1,         r.drawable.sample_2, r.drawable.sample_3,         r.drawable.sample_4, r.drawable.sample_5,         r.drawable.sample_6, r.drawable.sample_7,      }; }

can tell me why getting error? appreciated. thanks

that unrelated import, i'd guess complaining this: r.layout.main. layout defined? need import correct r file, 1 generated in package: com.newapp.r?

also, assume import @ beginning copy error?


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