Animate cluster when visible

[webserveis]

Great library, right now I was looking for a solution whith clustering...

I see in the demo/gir that the cluster is hidden and shown only when necessary

Is posible add animate fade-in when cluster is needed draw in viewport? Similar objects in google maps, labels, icons...

Or other feature, posible set factor viewport "visible" increase the viewport as if it were 1.2f, so the clusters are pre-loaded before being visualized

[makovkastar]

1. You are right, only the markers, that are inside a visible camera rect are rendered. Regarding the marker appear animation: I think it's a good idea, but the Marker class doesn't expose any methods to change its transparency. If you find the way to animate the appearance of a marker - let me know.
2. I wanted the library to be as fast as possible, so I decided to minimize the amount of rendered markers.

[webserveis]

Look https://developers.google.com/android/reference/com/google/android/gms/maps/model/Marker

Alpha Sets the opacity of the marker. Defaults to 1.0.

I found this for animate fadeIn https://stackoverflow.com/questions/19753765/maps-v2-marker-animation-fade-in-and-out

ObjectAnimator.ofFloat(marker, "alpha", 0f, 1f).setDuration(500).start();

[makovkastar]

Oh, I see, thanks. I somehow overlooked the method. I could try adding the appearing animation and see how it will look.

[makovkastar]

I have implemented the appearance animation. Check this commit: https://github.com/sharewire/google-maps-clustering/commit/c5652fd871d0b8d358fb9b7a8ef9f58c55d283c1. I will release a new version soon.