How to handle Google Map marker click?

Question

我已经使用数据库动态创建了具有多个标记的Google Map，现在有人可以建议我如何分别创建每个标记的点击事件吗？

Answer 1

You can do like this

private Marker marker1;
    marker1 = mMap.addMarker(new MarkerOptions()
                    .position(LatLng(-31.952854, 115.857342))
                    .title("Title");
            marker1.setTag(0);

     mMap.setOnMarkerClickListener(this);

and in implementation of listener

 @Override
    public boolean onMarkerClick(final Marker marker) {
       //marker.getTag()
    }

Answer 2

Use this for Multiple markers:

First make your app to implement GoogleMap.OnMarkerClickListener Then create a Marker array :

Marker[] marker = new Marker[20]; //change length of array according to you

then inside

onMapReady(){
    mMap.setOnMarkerClickListener(this);
for(int i = 0 ; i < yourMarkerListsize ; i++ ) {
        marker[i] = mMap.addMarker(new MarkerOptions()
        .position(new LatLng(list(i).getLat(), list(i).getLon())
        .anchor(0.5f, 0.5f)
        .title(title)
        .snippet(snippet)
        .icon(yourIcon));
    }

then finally

@Override
    public boolean onMarkerClick(Marker marker) {
   //you can get assests of the clicked marker
   return false;
}

Hope it helps!!!

Answer 3

If you are looking for Xamarin code for the this, following is how you do it

GoogleMaps  Gmap;                                              

GMap.MarkerClick += GMap_MarkerClick;
GMap.InfoWindowClick += GMap_InfoWindowClick;

private void GMap_MarkerClick(object sender, GoogleMap.MarkerClickEventArgs e)
    {
        Marker marker = e.Marker;
        marker.ShowInfoWindow();
    }
private void GMap_InfoWindowClick(object sender, GoogleMap.InfoWindowClickEventArgs e)
    {

    }

this is how you handle both marker and marker info window click events in xamarin Android Hope this helps you.

Answer 4

I think the below approach may help you:

As others have said, you can set an OnMarkerClickListener to the marker, to perform an event on Marker click and add launch activity using an URL, refer here . So you can store the activity url also in DB. When dynamically creating the marker, maintain a Map whose key will be object of Marker class and Value will be String the URL.

so, inside onMarkerClick() method:

@Override
public boolean onMarkerClick(Marker marker) {
   String activityUrl = markerURLMap.get(marker);
   Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(activityUrl));
   startActivity(intent);
}

Answer 5

In order to attach unique URLs per marker click, you need to attach an object that you tag within Marker.Tag as follows:

UrlObject url = new UrlObject()
                {
                    Url = "enteryoururlhere"
                };
marker.Tag = UrlObject;

Then, you would get your URL that is unique to each marker by calling the following:

public boolean onMarkerClick(Marker marker) {
        UrlObject obj = marker.Tag;
        String activityUrl = obj.Url;
        Intent intent = new Intent(Intent.ACTION_VIEW, 
        Uri.parse(activityUrl));
        startActivity(intent);
   }

Your UrlObject class would be easy to setup:

    class UrlObject : Java.Lang.Object
    {
          public string Url { get; set; }
    }

Edit: You would make a tag for every marker in your loop. That way, when each marker is created, it is tagged properly with each url.