Android Open Source - Android-Search-ListView-using-Filter List View Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.androidbegin.filterlistviewtutorial;
/*from   ww  w.  j  a v  a 2 s.  c  om*/
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import android.view.View.OnClickListener;

public class ListViewAdapter extends BaseAdapter {

  // Declare Variables
  Context mContext;
  LayoutInflater inflater;
  private List<WorldPopulation> worldpopulationlist = null;
  private ArrayList<WorldPopulation> arraylist;

  public ListViewAdapter(Context context, List<WorldPopulation> worldpopulationlist) {
    mContext = context;
    this.worldpopulationlist = worldpopulationlist;
    inflater = LayoutInflater.from(mContext);
    this.arraylist = new ArrayList<WorldPopulation>();
    this.arraylist.addAll(worldpopulationlist);
  }

  public class ViewHolder {
    TextView rank;
    TextView country;
    TextView population;
  }

  @Override
  public int getCount() {
    return worldpopulationlist.size();
  }

  @Override
  public WorldPopulation getItem(int position) {
    return worldpopulationlist.get(position);
  }

  @Override
  public long getItemId(int position) {
    return position;
  }

  public View getView(final int position, View view, ViewGroup parent) {
    final ViewHolder holder;
    if (view == null) {
      holder = new ViewHolder();
      view = inflater.inflate(R.layout.listview_item, null);
      // Locate the TextViews in listview_item.xml
      holder.rank = (TextView) view.findViewById(R.id.rank);
      holder.country = (TextView) view.findViewById(R.id.country);
      holder.population = (TextView) view.findViewById(R.id.population);
      view.setTag(holder);
    } else {
      holder = (ViewHolder) view.getTag();
    }
    // Set the results into TextViews
    holder.rank.setText(worldpopulationlist.get(position).getRank());
    holder.country.setText(worldpopulationlist.get(position).getCountry());
    holder.population.setText(worldpopulationlist.get(position).getPopulation());
    
    // Listen for ListView Item Click
    view.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View arg0) {
        // Send single item click data to SingleItemView Class
        Intent intent = new Intent(mContext, SingleItemView.class);
        // Pass all data rank
        intent.putExtra("rank",(worldpopulationlist.get(position).getRank()));
        // Pass all data country
        intent.putExtra("country",(worldpopulationlist.get(position).getCountry()));
        // Pass all data population
        intent.putExtra("population",(worldpopulationlist.get(position).getPopulation()));
        // Pass all data flag
        // Start SingleItemView Class
        mContext.startActivity(intent);
      }
    });

    return view;
  }

  // Filter Class
  public void filter(String charText) {
    charText = charText.toLowerCase(Locale.getDefault());
    worldpopulationlist.clear();
    if (charText.length() == 0) {
      worldpopulationlist.addAll(arraylist);
    } 
    else 
    {
      for (WorldPopulation wp : arraylist) 
      {
        if (wp.getCountry().toLowerCase(Locale.getDefault()).contains(charText)) 
        {
          worldpopulationlist.add(wp);
        }
      }
    }
    notifyDataSetChanged();
  }

}

Java Source Code List

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