Develop Reference

Arrow direction header pointer in google map marker for Android

I am using Google map v2,everything works fine from viewing the map to applying polyline between markers.However there is one thing that I need to accomplish, it is to put arrow header inside the commonly used map marker.
The arrow must rotate or point to the direction of the next location and so on. here's the image looks like
map_marker
I have tried using only the arrow alone and it works fine with the use of .rotation(bearing) but my boss wants it inside the commonly used marker and only the arrow will move.They have a working sample but it works only in the browser using javascript.I haven't found samples or at least documentation about it on the internet only this similar question
How to display direction arrows in the map marker for google maps v2 android but unfortunately no one answered. I have also tried
.icon(BitmapDescriptorFactory.fromBitmap(getMarkerBitmapFromView(R.drawable.arrow_header)))
but the both the marker and arrow moves
I have done everything to accomplish this task and this would be my last resort just to inform my boss that just in case there is no way that it'll work on android. Thank you..

Drawing on the MapFragment, while keeping some elements visible

I'm developing an application that has the following goal:
Using the google maps android API 2 I get my current position, and as I start walking the application starts drawing the route I take
The twist is that the map is a "blind" map. Meaning the map is hidden, only the Marker of my current position and a dotted line of my route is shown.
Keep in mind I'm a novice developing to Android, so please be specific. (Thank you)
I managed to create the map, get my current position and zoom in to it (Had no sens to see the whole planet while i want only my current position). And it's pretty accurate so far.
The thing is I don't know what should I do from this point on.
Basicly I need a white View between the Marker and the real map. Also as I advance that View should always be on, over the MapFragment/MapView. Also I wish to keep the zoom and drag functionality's of the MapFragment.
How can I achieve this?
At this point I'm opened to any solutions.
(Been browsing for a few days now the developers site, I have seen that with the ViewOverlay class I can put messages over the map, but I'm not sure what would the correct aproach be in my case...)

To hide the whole map behind the white view I would use Polygon class Polygon Even if you specify Polygon to cover the whole map Markers will be still displayed in front of it and as so user's current position marker will be visible. You also will be able to zoom and drag.
To draw line on map use Polyline class Polyline It will draw users path as a polyline. If you want to stick with dotted line you can use Circle objects to create it. Circle

Android Google map with inset overview when zoomed in

I am developing an android application using Google maps with clustering of markers. The application works fine however once you zoom into a specific area and all the clusters expand to individual markers I would like to also show a small view that represents the entire map, where you are, and where all the markers are, to enable the user to navigate round the map while zoomed in. Ive Googled and searched SO, but not found anything. Is there any "off the shelf" solution? Or am I going to have to code this all myself? The type of solution I am looking for is the type of small window that many games use to show an overview of where the player is and all the points of interest are within the current level.

I haven't seen any "off the shelf" solutions, but here is what I would do here:
1) Create an additional fragment of the map. Place it in one of corners like games do
2) Here is where all the magic should happen. You need to synchronize these 2 maps. Map's Projection lets you to translate geo coordinates into XY coordinates within the view. That's being said you can get lat/lng of your top-left and bottom-right corners on the main map and translate these 2 corners into top-left and bottom-right XY coordinates of the mini-map's view. Now, when you have XY coordinates, the only thing you need to do - is to draw a rect on top of the mini map.
There is even easier and more native solution - since you have top-left and bottom-right lat/lng coordinates - you can draw a set of polylines on a minimap to get a rect. But in this case it will be hard to move it around (with your finger) in case you want to change current main map location using mini-map

Add a layer or a background on a mapView

I have a particular need with a mapView and i can't find any good solution.
I have a Mapview with some markers displayed on it, and it works perfectly.
My need is that i want to put a kind of layer/background on the screen, in order to "mask" the map, but i always want to see the markers, and keep all the mapview functionnalities (zoom, move, etc.)
Is there any solution available to do it?
I hope you understand my need.
Many thanks in advance.

Create an overlay that mask (cover) the part of the map that you want to cover. In the onDraw() of this oevrlay just draw something that achive your mask requirements (areas, colors and opacity).
To ensure that markers are always visible, you need to add the overlay with markers after you add the overlay that mask map to the mapView.getOverlays.add().
Enjoy it.

Android: I am using a mapview and ItemizedOverlay. I am ploting a drawable on that, it does not shows correct place

Android: I am using a mapview and ItemizedOverlay. I am ploting a drawable on that, it does not shows correct place. It shows correct position on map when full zoom in but when it is zoom out the marker is moving from correct position.
Can any one know the solution. Should I need to do something in draw of ItemizedOverlay.?
Does anyone knows the solution. Please help me.
regards,
dharma