如何在android中的Gridview中实现搜索功能

Question

在我的应用程序中,我有搜索选项卡,在网格视图中显示带有其名称的图像,现在我想实现搜索功能.我一直在谷歌搜索过去两天,但我没有得到任何解决方案.任何想法或教程0r我怎样才能实现这一目标？

有人帮我这个.

提前致谢.

主要活动

import java.util.ArrayList;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageButton;

import com.example.diceapp.R;

public class SearchActivity extends Activity 
{


     JSONArray results;

     JSONObject jobj;

     SearchCustomAdapter adapter1;

     ImageButton ib;

     ArrayList<String> a1,a2,a3,a4;

     ArrayList<String> name=new ArrayList<String>();

     ArrayList<String> description=new ArrayList<String>();

     ArrayList<String> image=new ArrayList<String>();

     ArrayList<String> price=new ArrayList<String>();

     Button add;

     String pid;

     GridView gView;

     EditText src;

     int textlength = 0;

     ArrayList<String> p_name = new ArrayList<String>();
     ArrayList<String> p_image = new ArrayList<String>();


    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {

        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        setContentView(R.layout.search_activity);

        a1=new ArrayList<String>();

        a2=new ArrayList<String>();

        a3=new ArrayList<String>();

        a4=new ArrayList<String>();

        src=(EditText)findViewById(R.id.srcetxt);

        /*src.addTextChangedListener(new TextWatcher()
        {

            @Override
            public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
                // When user changed the Text
                SearchActivity.this.adapter1.getFilter().filter(cs);  
            }

            @Override
            public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                    int arg3) {
                // TODO Auto-generated method stub

            }

            @Override
            public void afterTextChanged(Editable arg0) {
                // TODO Auto-generated method stub                         
            }
        });*/

        new Searchtask().execute();

        gView = (GridView)findViewById(R.id.gridView1);

        gView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int position,
                    long arg3) {
                // TODO Auto-generated method stub
                System.out.println("outside on click"+position);

            }
        });

       ib=(ImageButton)findViewById(R.id.imageButton1);

    }

    private class Searchtask extends AsyncTask<String, String, JSONObject> 
    {
        private ProgressDialog pDialog;

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

            pDialog = new ProgressDialog(SearchActivity.this);

            pDialog.setMessage("Loading Data ...");

            pDialog.setIndeterminate(false);

            pDialog.setCancelable(true);

            pDialog.show();
        }

        @Override
        protected JSONObject doInBackground(String... args) 
        {
            JSONParser jParser = new JSONParser();

            JSONObject json = jParser.getJSONFromUrl("http:link.php");

            return json;

        }

        @Override
        protected void onPostExecute(JSONObject json)
        {

            System.out.println("---------------return name list json------------"+json);

            pDialog.dismiss();

            try 
            {
                jobj=json.getJSONObject("response");
                // Getting Array of Contacts
                results = jobj.getJSONArray("obejects");

                System.out.println("In product Activity after JSON");
                // looping through All Contacts
                for(int i = 0; i < results.length(); i++)
                {
                    JSONObject c = results.getJSONObject(i);

                    name.add(c.getString("name"));

                    image.add(c.getString("image"));

                     price.add(c.getString("price"));

                    description.add(c.getString("Description"));

                }
            } 
            catch (JSONException e) 
            {
                e.printStackTrace();
            }
            adapter1  = new SearchCustomAdapter(getApplicationContext(), R.layout.gridlistimg, name, image,description,price);

            gView.setAdapter(adapter1);

        }
    }

}

baseadapter类

package com.example.diceapp.search;
import java.util.ArrayList;

import android.content.Context;
import android.content.Intent;
import android.sax.StartElementListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

import com.example.diceapp.AAAMainActivity;
import com.example.diceapp.R;
import com.example.diceapp.category.ImageLoader;

public class SearchCustomAdapter extends BaseAdapter
{
    Context context;

    LayoutInflater inflater;

    ArrayList<String> aaaa1,bbbb1,cccc1;


    ArrayList<String> c_pname;

    ArrayList<String> c_pimage;

    ArrayList<String> c_pprice;

    ArrayList<String> c_pdescription;

    String[] data_text;
    String[] data_image;

    ImageLoader iloader;

    public SearchCustomAdapter(Context c, int productDescribe,ArrayList<String> pname, ArrayList<String> pimage,
            ArrayList<String> productdescription, ArrayList<String> pprice)
    {
        // TODO Auto-generated constructor stub



        this.context=c;

        this.c_pname=pname;

        this.c_pprice=pprice;

        this.c_pdescription=productdescription;

        this.c_pimage=pimage;

         inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

         iloader= new ImageLoader(context.getApplicationContext());


    }


    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return c_pname.size();
        //return data_text.length;
    }

@Override
    public Object getItem(int arg0) {
        // TODO Auto-generated method stub
        return null;

    }

    @Override
    public long getItemId(int pos) {
        // TODO Auto-generated method stub
        //return  c_pname.indexOf(getItem(pos));//arg0;
        return pos;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent)
    {
        // TODO Auto-generated method stub
        View row=convertView; 

        ViewHolder vh;

        if(row==null)
        {
            row=inflater.inflate(R.layout.custom_search_activity, parent, false);

            vh=new ViewHolder();

            vh.pname=(TextView)row.findViewById(R.id.product_name);

            vh.pprice=(TextView)row.findViewById(R.id.textView2);

            vh.image1=(ImageView) row.findViewById(R.id.imageView1);

            vh.btn=(Button)row.findViewById(R.id.p_custom_tv);


            /*row.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View arg0) {

                     System.out.println("outside on click"+position);


                     ArrayList<String> sendingary=new ArrayList<String>();

                     sendingary.add(c_pname.get(position));

                     sendingary.add(c_pprice.get(position));

                     sendingary.add(c_pimage.get(position));

                     sendingary.add(c_pdescription.get(position));

                     Intent cp=new Intent(context.getApplicationContext(),product_details.class);

                     cp.putStringArrayListExtra("aryvalue", sendingary);

                     cp.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                     context.startActivity(cp);

                }
            });*/

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

        vh.pname.setText(c_pname.get(position));
        vh.pprice.setText("KD "+c_pprice.get(position));        
        iloader.DisplayImage(c_pimage.get(position),  vh.image1);

        return row;
    }



    public static class ViewHolder
    {
         TextView pname,pprice;

         ImageView image1;

         Button btn;
    }

    public SearchCustomAdapter getFilter() {
        // TODO Auto-generated method stub
        return null;
    }
}

Answer 1

如果使用ArrayAdapter作为gridview的适配器,则可以覆盖getFilter()方法并返回自己的Filter,它可以根据输入的文本过滤项目.请参阅此链接以了解如何使用过滤器.祝好运.:-)