MapActivityOneMensa.java

package com.ese2013.mensaunibe.map;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;

import com.ese2013.mensaunibe.R;
import com.ese2013.mensaunibe.model.Model;
import com.ese2013.mensaunibe.model.mensa.Mensa;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
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.google.android.gms.maps.model.PolylineOptions;

/**
 * @author group17
 * @author Marc Dojtschinov
 */

public class MapActivityOneMensa extends BaseMapActivity  {
		private Mensa mensa;
		private GoogleMap map;
		private MyLocation mLocation;
		private LatLng mLocationLatLng;
		private Marker mensaMarker;
		private int mMensaId;
		private String  travelMode = "walking";// default
	
	 

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);
	    setContentView(R.layout.fragment_map);
	    //Setup action bar
	    ActionBar actionBar = getSupportActionBar();
		actionBar.setDisplayHomeAsUpEnabled(true);
		initilizeMap();
	
	}
	 
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.actionbar_map, menu);
		return super.onCreateOptionsMenu(menu);
	}


	public void handleGetDirectionsResult(ArrayList<LatLng> directionPoints) { 
		PolylineOptions rectLine = new PolylineOptions().width(3).color(Color.RED);		 
	    for(int i = 0 ; i < directionPoints.size() ; i++) 
	    {          
	        rectLine.add(directionPoints.get(i));
	    }
	    map.addPolyline(rectLine);	
	}


	@SuppressWarnings("unchecked")
	@Override
	public void findDirections(double fromPositionDoubleLat, double fromPositionDoubleLong, double toPositionDoubleLat, double toPositionDoubleLong, String mode) {
		Map<String, String> map = new HashMap<String, String>();
	    map.put(GetDirectionsAsyncTask.USER_CURRENT_LAT, String.valueOf(fromPositionDoubleLat));
	    map.put(GetDirectionsAsyncTask.USER_CURRENT_LONG, String.valueOf(fromPositionDoubleLong));
	    map.put(GetDirectionsAsyncTask.DESTINATION_LAT, String.valueOf(toPositionDoubleLat));
	    map.put(GetDirectionsAsyncTask.DESTINATION_LONG, String.valueOf(toPositionDoubleLong));
	    map.put(GetDirectionsAsyncTask.DIRECTIONS_MODE, mode);

	    GetDirectionsAsyncTask asyncTask = new GetDirectionsAsyncTask(this);
	    asyncTask.execute(map); 
		
	}
	 
	@Override
	public void initilizeMap() {
		if (map == null) {
			map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
			//check if map is created successfully or not
			if (map != null) {
				setUpMap();
			}
		}
	}
	
	public void setUpMap(){
		if(mLocation == null){
			mLocation = MyLocation.getInstance();
			mLocation.setActivity(this);
		}
		mMensaId = getIntent().getIntExtra("int_value",0);
		mensa = Model.getInstance().getMensaById(mMensaId);
		//canteen name as action bar title
		setTitle(mensa.getName());
		mLocationLatLng =new LatLng(mLocation.getLocation().getLatitude(),mLocation.getLocation().getLongitude());
		
		final View mapView = getSupportFragmentManager().findFragmentById(R.id.map).getView();
        if (mapView.getViewTreeObserver().isAlive()) {
            mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
                @Override
                public void onGlobalLayout() {
                    map.moveCamera( CameraUpdateFactory.newLatLngZoom(new LatLng(mLocationLatLng.latitude, mLocationLatLng.longitude),14.0f) );
                    mensaMarker = map.addMarker(new MarkerOptions().position(new LatLng(mensa.getLat(),mensa.getLon()))
            				.title(mensa.getName())); 
                	findDirections(mLocationLatLng.latitude, mLocationLatLng.longitude,
                               mensaMarker.getPosition().latitude, mensaMarker.getPosition().longitude, travelMode );
                }
            });
        }
	}
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch(item.getItemId()) {
			case R.id.action_travel_mode:				
				if(travelMode.contentEquals("walking")) {
					travelMode ="driveing";
					map.clear();
					mensaMarker = map.addMarker(new MarkerOptions().position(new LatLng(mensa.getLat(),mensa.getLon()))
            				.title(mensa.getName()));
					findDirections(mLocationLatLng.latitude, mLocationLatLng.longitude,
                            mensaMarker.getPosition().latitude, mensaMarker.getPosition().longitude, travelMode );
					item.setTitle(getString(R.string.action_travel_mode_walking));
					
				} else {
					travelMode ="walking";
					map.clear();
					mensaMarker = map.addMarker(new MarkerOptions().position(new LatLng(mensa.getLat(),mensa.getLon()))
            				.title(mensa.getName()));
					findDirections(mLocationLatLng.latitude, mLocationLatLng.longitude,
                            mensaMarker.getPosition().latitude, mensaMarker.getPosition().longitude, travelMode );
					
					item.setTitle(getString(R.string.action_travel_mode_driveing));
				}
				
				return true;
			default:
		           return super.onOptionsItemSelected(item);
	    }
	}
	
	@Override
	public void onResume() {
        super.onResume();
        mLocation.callOnResume();
	}
	@Override
	public void onStop() {
		super.onStop();
		mLocation.callOnStop();
		
	}

	@Override
	public void onPause() {
		super.onPause();
		mLocation.callOnPause();
		
	}
	@Override
	public void onStart() {
		super.onStart();
		mLocation.callOnStart();
	}
}