Android Google map custom view

Issue

My client wants his google map to be initially hidden and gradually get visible as a user walks around on it with a 15m radius. I have searched and searched but couldnt find anything useful. Can someone please point me to some resource or tutorial that can help me achieve this? Can I overlay an opaque canvas and have it become transparent as the user moves?

Thanks in advance!

Solution

You can change the alpha state of the map view from 0 to 1 as you receive gps coordinates.

http://developer.android.com/reference/android/view/View.html#setAlpha%28float%29

There is a certain amount of Jitter involved in GPS coordinates so your map would gradually become visible even if you did not move around.

ALternatively, you could lay a view over the map with RelativeLayout and gradually change the alpha state of the overlay.

Answered By - mjstam