Calling different dialog activity to different infoWindow click event

Question

I'm currently making a Campus Map using Google Maps API v2. I have currently 10 map markers. Each of them has its info Window. What I want to happen is that when the user clicks on the info Window, it shows a Listview Custom Dialog. I wanna use the if else statement but I don't know how to construct since I haven't found any examples on the Internet.

This is my Dialog Activity

public class AdminDialog extends DialogFragment{

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setTitle(R.string.layers)
           .setItems(R.array.layer_options, new DialogInterface.OnClickListener(){
               public void onClick(DialogInterface dialog, int which) {
               // The 'which' argument contains the index position
               // of the selected item
           }
    });
    return builder.create();
}
    }

And I have some sample markers...

public void addMarkersToMap() {
  Marker cmumarker = map.addMarker(new MarkerOptions()
   .position(cmu)
   .title("Central Mindanao University")
   .snippet("Population: 6,143"));
   cmumarker.showInfoWindow();

  Marker adminmarker = map.addMarker(new MarkerOptions()
    .position(admin)
    .title("Central Mindanao University Administration Building")
    .snippet("Population: 1,234")
    .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));

  Marker casmarker = map.addMarker(new MarkerOptions()
    .position(cas)
    .title("College of Arts and Sciences")
    .snippet("Population: 1,234")
    .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
}

My concern is how to construct an if else statement or a switch case statement using this code.. this is where the Custom Dialog is called..

adminDialog = new AdminDialog();
adminDialog.show(getFragmentManager(), "custom-tag-goes-here");

Answer 1

1. declare your markers as fields, instead of local varaibles

   Marker cmumarker , adminmarker, casmarker;
   // You can also keep the ids
   String cmumarkerId , adminmarkerId, casmarkerID;
   public void addMarkersToMap() {
     cmumarker = map.addMarker(new MarkerOptions()
    .position(cmu)
    .title("Central Mindanao University")
    .snippet("Population: 6,143"));
    cmumarker.showInfoWindow();
    cmumarkerId=cmumarker.getID();
   
    adminmarker = map.addMarker(new MarkerOptions()
     .position(admin)
     .title("Central Mindanao University Administration Building")
     .snippet("Population: 1,234")
     .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
   
    adminmarkerId=adminmarker.getID();
   
    casmarker = map.addMarker(new MarkerOptions()
     .position(cas)
     .title("College of Arts and Sciences")
     .snippet("Population: 1,234")
   .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
   
    casmarkerId=casmarker.getID();
   }
   

2. set the click listener to the markers, for example after you create the map, or at the end of addMarkersToMap()

   map.setOnMarkerClickListener(this);
   

3. override the onMarkerClick(Marker marker) function, and make your decisions

   @Override
   public boolean onMarkerClick(Marker marker) {
   
   
   
           if (marker.getId().equals(cmumarkerId)) {
               //do whatever you want 
               return true;
           }
   
           if (marker.getId().equals(adminmarkerId)) {
                //do whatever you want                  
                return true;
           }
           if (marker.getId().equals(casmarkerId)) {
               //do whatever you want                  
               return true;
           }
   
         return false;
   }
   

Also, if you want the info window to be clicable, instead of the marker, you

• overrride the public void onInfoWindowClick(Marker marker) instead of the onMarkerClick
• asign the listener by means of map.setOnInfoWindowClickListener(this); instead of map.setOnMarkerClickListener(this);

UPDATE:

If you have many markers, you can look for a better way of keeping the ids. Some people uses to compare directly the marker, by reference(ie. if (marker==adminmarker{...}) but sometimes it happens to be diferent objects with the same values, so the id is the most secure way of comparing them.

Answer 2

UPDATE for the answers.. Credits to Carlos Robles..

Marker cmumarker, adminmarker, casmarker;
String PREVIOUS_ID;

public void addMarkersToMap() {
cmumarker = map.addMarker(new MarkerOptions()
.position(cmu)
.title("Central Mindanao University")
.snippet("Population: 6,143"));
cmumarker.showInfoWindow();

adminmarker = map.addMarker(new MarkerOptions()
.position(admin)
.title("Central Mindanao University Administration Building")
.snippet("Population: 1,234")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));

casmarker = map.addMarker(new MarkerOptions()
.position(cas)
.title("College of Arts and Sciences")
.snippet("Population: 1,234")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));

PREVIOUS_ID=adminmarker.getId();
map.setOnInfoWindowClickListener(this);
}

And this is a sample where the Custom Dialog can only be called by adminmarker..

@Override
  public void onInfoWindowClick(Marker marker) {
  AdminDialog adminDialog;

if (marker.getId().equals(PREVIOUS_ID)) {
    adminDialog = new AdminDialog();
    adminDialog.show(getFragmentManager(), "custom-tag-goes-here");
    }
}