Android Open Source - passby Search Result Activity

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License

The source code is released under:

Copyright 2014 Firebase, https://www.firebase.com/ Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ?Software??...

Java Source Code

//#CSIT6000B#  Rio He       20227977 yheas@connect.ust.hk
//#CSIT6000B#  Cedric Liang 20220395 zliangag@connect.ust.hk
//#CSIT6000B#  Kevin Wang   20225577 zwangbo@connect.ust.hk 
package com.firebase.client;
//from  w  w  w .j  a  va 2s.c  om
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.firebase.androidchat.*;
import com.firebase.database.User;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

public class SearchResultActivity extends Activity {
  // user inputs room info in LoacteActiviy
  // the info is passed by intent
  private String u_room = new String();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_searchresult);
    this.u_room = getIntent().getStringExtra("u_room");
    
    ListView lv = (ListView) findViewById(R.id.searchResult_wrapper);
    EditText et = (EditText) findViewById(R.id.editLocate);
    et.setText(this.u_room);
    
    // init classroom store obj
    RoomInfoDatabase rid = new RoomInfoDatabase();
    // match room info from prev activity
    final ArrayList<String> list = rid.query1room(this.u_room);
        StableArrayAdapter saa = new StableArrayAdapter(SearchResultActivity.this, R.layout.listitem_searchresult, list);
        lv.setAdapter(saa);
        
        lv.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        String chatRoom = list.get(position);
//        Log.i("chatRoom", chatRoom);
//        Log.i("User.getInstance().getNickname()", User.getInstance().getNickname());
        
        Intent intent = new Intent(SearchResultActivity.this, MainActivity.class);
        intent.putExtra("chatRoom", chatRoom);
        intent.putExtra("nickname", User.getInstance().getNickname());
        startActivity(intent);
      }
          
    });
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();  
      inflater.inflate(R.menu.menu, menu);  
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if(item.getItemId() == R.id.app_settings){
      Intent intent = new Intent(this, SettingActivity.class);
      startActivity(intent);
    }
      
    return true;
  }
  
  // ListView Adapter
  private class StableArrayAdapter extends ArrayAdapter<String>{
    private ArrayList<String> list = new ArrayList<String>();
    
    public StableArrayAdapter(Context context, int textViewResourceId,
        List<String> objects) {
      super(context, textViewResourceId, objects);
      for(int i=0; i<objects.size(); i++){
        this.list.add(objects.get(i));
      }
    }

    @SuppressLint("ViewHolder")
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      LayoutInflater inflater = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      View rowView = inflater.inflate(R.layout.listitem_searchresult, parent, false);
      
      TextView tv = (TextView) rowView.findViewById(R.id.searchResult);
      tv.setText(this.list.get(position));
      return rowView;
    }  
    
  }

  
  // database to store room info
  private class RoomInfoDatabase{
    private String[] rooms;
    private String notFoundState = new String("Not Found the Room Please Input Again");
    
    private RoomInfoDatabase(){
      this.initRooms();
    }
    private void initRooms(){
      this.rooms = new String[]{"Academic Building 2464", "Academic Building 2502", "Enterprise Center 4619", "Enterprise Center 4620", "LSK Business Building 1997"};
    }
    
    // using RegEx to find search result
    public ArrayList<String> query1room(String u_room){
      ArrayList<String> result = new ArrayList<String>();
      Pattern p = Pattern.compile(u_room, Pattern.CASE_INSENSITIVE);
      
      for(int i=0; i<this.rooms.length; i++){
        Matcher m = p.matcher(this.rooms[i]);
        if(m.find()){
          result.add(this.rooms[i]);
        }else{
          // not found alert
          if(i==this.rooms.length-1&&result.isEmpty())
            result.add(notFoundState);
        }
      }
      
      return result;
    }
  }
}

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