wie man listview in gridview konvertiert

Unten ist mein Code, der gut funktioniert, um die Listenansicht horizontal anzuzeigen. wie kann ich es in gridvew ändern. Welche Änderungen muss ich vornehmen, um zur Rasteransicht zu wechseln? Hilf mir bitte

public class fifthscreen extends Activity {

int IOConnect = 0;

String _response;
String status;

HorizontalListView listview;
CategoryListAdapter3 cla;

String URL, URL2;
String SelectMenuAPI;
static ArrayList<Long> Category_ID = new ArrayList<Long>();
static ArrayList<String> Category_name = new ArrayList<String>();
static ArrayList<String> Category_image = new ArrayList<String>();
public static String allergen2;

String name;

String url1;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fifthscreen);

    listview = (HorizontalListView) this.findViewById(R.id.listview2);

    cla = new CategoryListAdapter3(fifthscreen.this);
    new TheTask().execute();
}

public class TheTask extends AsyncTask<Void, String, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

    }

    @Override
    protected String doInBackground(Void... arg0) {

        try {


            HttpGet request = new HttpGet(url);
            HttpResponse response = client.execute(request);
            HttpEntity resEntity = response.getEntity();
            _response = EntityUtils.toString(resEntity);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return _response;
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);

        try {

            JSONObject json2 = new JSONObject(result);

            status = json2.getString("status");
            if (status.equals("1")) {

                JSONArray school4 = json2.getJSONArray("dish_allergen");
                //
                for (int i = 0; i < school4.length(); i++) {
                    JSONObject object = school4.getJSONObject(i);

                    Category_ID.add((long) i);
                    Category_name.add(object.getString("name"));
                    Category_image.add(object.getString("image"));

                }

            }

            else {

                JSONArray school2 = json2.getJSONArray("data");
                for (int i = 0; i < school2.length(); i++) {
                    JSONObject object = school2.getJSONObject(i);

                    Category_ID.add((long) i);
                    Category_name.add(object.getString("name"));
                }
            }

        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        listview.setAdapter(cla);
    }
}
     }







   public class CategoryListAdapter3 extends BaseAdapter {

private Activity activity;

private AQuery androidAQuery;


public CategoryListAdapter3(Activity act) {
    this.activity = act;
//  imageLoader = new ImageLoader(act);
}

public int getCount() {
    // TODO Auto-generated method stub
    return fifthscreen.Category_ID.size();
}

public Object getItem(int position) {
    // TODO Auto-generated method stub
    return position;
}

public long getItemId(int position) {
    // TODO Auto-generated method stub
    return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    ViewHolder holder;
    androidAQuery = new AQuery(getcontext());
    if(convertView == null){
        LayoutInflater inflater = (LayoutInflater) activity
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(R.layout.viewitem2, null);
        holder = new ViewHolder();

        convertView.setTag(holder);
    }else{
        holder = (ViewHolder) convertView.getTag();
    }


    holder.txtText = (TextView) convertView.findViewById(R.id.title2);
    holder.imgThumb = (ImageView) convertView.findViewById(R.id.image2);

    holder.txtText.setText(fifthscreen.Category_name.get(position));
    //  imageLoader.DisplayImage(fifthscreen.Category_image.get(position),   
          activity, holder.imgThumb);


     androidAQuery.id(holder.imgThumb).image(fifthscreen.Category_image.get(position), false, 
     false);

    return convertView;
}
private Activity getcontext() {
    // TODO Auto-generated method stub
    return null;
}
static class ViewHolder {
    TextView txtText;
    ImageView imgThumb;
}

          }



             <!---  fifithscreen.xml--->

                  <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
          android:layout_marginLeft="10dp"
          android:layout_marginRight="10dp"
          android:layout_below="@+id/test_button_text5"
         android:orientation="vertical" >

   <com.example.examplecode.HorizontalListView
           android:id="@+id/listview2"
           android:layout_width="wrap_content"
           android:layout_height="120dp"
             android:layout_below="@+id/test_button_text5"

           android:background="#ffffff"/>


      </LinearLayout>




   <!--viewitem2.xml--->



     <?xml version="1.0" encoding="utf-8"?>
  <LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
 android:layout_width="wrap_content"
   android:layout_height="wrap_content"

   >

  <ImageView
android:id="@+id/image2"
   android:layout_width="90dp"
 android:layout_height="70dp"
  android:scaleType="fitXY"
 android:padding="5dp"

  android:layout_marginLeft="5dp"
   android:layout_marginRight="5dp"

android:src="@drawable/ic_launcher"
/>

<TextView
android:id="@+id/title2"
android:layout_width="90dp"
android:layout_height="wrap_content"
android:textColor="#000"
android:paddingTop="10dp"


android:gravity="center_horizontal"
/>



   </LinearLayout>

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