Android Google Maps v2 - Add object to marker

问题:

How can we add an object to a marker in the new Google Maps Android API v2? So if we click on the InfoWindow, we can do something with the object?

public void addSpotOnMap(Spot spot) {
    getMap().addMarker(new MarkerOptions()
            .position(new LatLng(spot.getParseGeoPoint().getLatitude(), spot.getParseGeoPoint().getLongitude()))
            .title(spot.getName())
            .snippet(spot.getCategory())
            .draggable(false));

}

This sets the location, title and snippet for the object. But I want to be able to go to another activity about this specific Spot-object if I click on the InfoWindow

回答1:

Not really sure if this is the correct answer, but take a look at this blogpost I made about this problem:

Since Marker is final, it's this can easily be solved by linking the data with the Marker in a Map, for example HashMap<Marker, YourDataClass> or HashMap<Marker, String>

Here's a tutorial that explains all: http://bon-app-etit.blogspot.be/2012/12/add-informationobject-to-marker-in.html

回答2:

As of Play Services v9.4.0, you can now set any object directly upon a marker!

To save the data:

Marker marker = getMap().addMarker(new MarkerOptions()
        .position(lat, lng)
        .title(spot.getName());

CustomObject myData = new CustomObject();
marker.setTag(myData);

Then to retreive your data:

CustomObject myRestoredData = (CustomObject)marker.getTag(myData);

For more infomration on marker data, here are the docs.

回答3:

Try android-maps-extensions its library where you can add object to mark by setdata method and retrieve data call method getData

Read more

Object getData() and setData(Object) on Marker, Circle, GroundOverlay, Polygon, Polyline or TileOverlay

from Gradle You may use any version of Google Play Services

dependencies {
    compile 'com.androidmapsextensions:android-maps-extensions:2.2.0'
    compile 'com.google.android.gms:play-services-maps:8.1.0'
}