Android Open Source - JavNav Google Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
*/*from   ww w .  j av a 2s .  co  m*/
*   JavNav 
*    a simple application for general use of the Texas A&M-Kingsville Campus. 
*    
*    Copyright (C) 2014  Manuel Gonzales Jr.
*
*    This program is free software: you can redistribute it and/or modify
*    it under the terms of the GNU General Public License as published by
*    the Free Software Foundation, either version 3 of the License, or
*    (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU General Public License for more details.
*
*    You should have received a copy of the GNU General Public License
*    along with this program.  If not, see [http://www.gnu.org/licenses/].
*
*/
package com.senior.fragments;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMarkerClickListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

import com.senior.javnav.R;

import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class GoogleFragment extends Fragment 
{
  private View map;
  private GoogleMap TAMUK;
  
  public LatLng TAMUKLoc= new LatLng(27.524285,-97.882433);
  
  private Spinner buildingList;
  
  private ArrayList<String> buildingNames = new ArrayList<String>();
  private ArrayList<String> buildingCoord = new ArrayList<String>();
  
  private int currentMode;
  private int navigate;
  
  @Override
  public View onCreateView(LayoutInflater inflate, ViewGroup container, Bundle savedInstanceState)
  {
    Log.i("Google","Oncreate view called");
    
    map = inflate.inflate(R.layout.google_fragment, container, false);
    buildingList = (Spinner)map.findViewById(R.id.buildings);
    
    buildingNames.clear();
    buildingCoord.clear();
    
    //Adds and organizes the buildings alphabetically
    buildingNames.addAll(Arrays.asList(getResources().getStringArray(R.array.listOfBuildings)));
    Collections.sort(buildingNames,String.CASE_INSENSITIVE_ORDER);
    
    buildingCoord.addAll(Arrays.asList(getResources().getStringArray(R.array.listOfBuildings)));
    Collections.sort(buildingCoord,String.CASE_INSENSITIVE_ORDER);
    
    for(int index = 0; index < buildingNames.size(); index++)
    {
      buildingNames.set(index, buildingNames.get(index).substring(0, buildingNames.get(index).indexOf(',')));
    }
    
    buildingNames.add(0,"Select one");
    
    ArrayAdapter<String> array = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_dropdown_item_1line,buildingNames);
    buildingList.setAdapter(array);
    
    //Places point on building when building is selected
    buildingList.setOnItemSelectedListener(new OnItemSelectedListener()
    {
      private double lat = 0;
      private double lon = 0;
      private String latString;
      private String longString;
      
      @Override
      public void onItemSelected(AdapterView<?> arg0, View arg1,
          int arg2, long arg3) {
        
        if(TAMUK != null && arg2 != 0)
        {
          navigate = 0;
          
          latString = buildingCoord.get(arg2-1);
          latString = latString.substring(latString.indexOf(',')+1,latString.lastIndexOf(','));
          
          longString = buildingCoord.get(arg2-1);
          longString = longString.substring(longString.lastIndexOf(',')+1);
          
          lat=Double.parseDouble(latString);
          lon=Double.parseDouble(longString);
          
          TAMUK.clear();
          TAMUK.addMarker(new MarkerOptions().position(new LatLng(lat,lon)).title(buildingNames.get(arg2)).snippet("Touch marker twice to start navigation"));
          TAMUK.setOnMarkerClickListener(new OnMarkerClickListener()
          {
            @Override
            public boolean onMarkerClick(Marker marker) 
            {
              navigate++;
              
              if(navigate == 2)
              {
                navigate = 0;
                String url = "http://maps.google.com/maps?f=d&daddr="+lat+","+lon+"&dirflg=d";
                Intent intent = new Intent(android.content.Intent.ACTION_VIEW, Uri.parse(url)); 
                intent.setClassName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity");
                startActivity(intent);
              }
              return false;
            }
          });
          TAMUK.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat,lon), 17));
        }
      }

      @Override
      public void onNothingSelected(AdapterView<?> arg0)
      { 
        
      }
      
    });
    
    setUpMap();
    
    return map;
  }
  
  @Override
  public void onStart()
  {
    super.onStart();
    
    SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(getActivity());
    
    String mapSel = shared.getString("mapSelect", "4");
    
    if(this.currentMode != Integer.parseInt(mapSel))
    {
      this.currentMode = Integer.parseInt(mapSel);
      TAMUK.setMapType(currentMode);
    }
  }
  
  @Override
  public void onDestroyView()
  {
    Log.i("Google","Destroy view called");
    super.onDestroyView();
    
    try
    {
      Log.i("Google","Destroy executing");
      Fragment frag = (getFragmentManager().findFragmentById(R.id.google_map));
      FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction();
      ft.remove(frag);
      ft.commit();
      
    }
    catch(Exception e)
    {
      Log.i("Google","Error in destroying map "+e);
    }
    Log.i("Google","On destroy complete!");
  }
  
  //Sets up the map when loaded
  public void setUpMap()
  {
    Log.i("Google","oncreate called!");
    
    SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(getActivity());
    
    String mapSel = shared.getString("mapSelect", "4");
    
    if(TAMUK==null)
    {
      TAMUK=((SupportMapFragment)getFragmentManager().findFragmentById(R.id.google_map)).getMap();
      Log.i("Google","Map recieved");
    }
    if(TAMUK!=null)
    {
      TAMUK=((SupportMapFragment)getFragmentManager().findFragmentById(R.id.google_map)).getMap();
      
      //Sets the options for the user to show their current location
      TAMUK.setMyLocationEnabled(true);
      
      TAMUK.animateCamera(CameraUpdateFactory.newLatLngZoom(TAMUKLoc, 16));
      
      //Sets the camera view as determined by the users settings
      this.currentMode = Integer.parseInt(mapSel);
      TAMUK.setMapType(currentMode);
      
      Log.i("Google","Map setting set");
    }
    
  }
  
}

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