I want to clear all map overlays or markers from google map and using following code
if(!mapOverlays.isEmpty())
{
mapOverlays.clear();
}
which is giving me exception can any one guide me? am i right or wrong if i am wrong then kindly provide me the solution to my problem. i want map clean if there is any marker on it.
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I've searched here and on the interweb, but cannot find out how to add overlays (.kml files) into Maps or Earth. Can it even be done (shame if not) and if so, how do I do it.
EDIT: I've tried MyMapsEditor, but that doesn't run on Froyo.
I've got a place I want to add on my map at a particular lat / lng. I'd like to display that on my map when the activity starts. How would I do this?
View 1 Replies View RelatedI want to do the following and am kind of stuck on these for a few days:
1) I was trying to draw poly lines ( I have encoded polylines, but have managed to decoded those) that move when I move the map(the only solution that I found was for Geopoints to be transformed into screen co-ordinateswhich wont move if I move the map !)
2) I have used helloItemizedOverlay to add about 150 markers and it gets very very slow.any idea what to do ? I was thinking about threads(handler)
3) I was looking for some sort of a timer function that executes a given function, say, every 1 minute or so.
4) I was also looking for ways to clear the Google map from all the markers/lines etc
I'm trying to create a dynamic ItemizedOverylay (please see the code below) on Google Maps (Android 2.1) on a Nexus One. In my Activity (that extends MapActivity) I'm creating a data thread that is receiving data from the network. A 'handler' is used to communicate the data from the receiving thread to map activity. This data contains the locations (lat, lon) of the markers that I want to overlay on my map. The location of each marker is dynamic (i.e., it changes every time I receive new data from the network.) refreshItems(ArrayList<OverlayItem> newItems) method in invoked inside the handleMessage() of the handler. There are around 11 markers in the ArrayList that is passed to refreshItems
I can see the markers overlayed on the map. However, I've two issues:.....................
i am showing list of map overlays on google map using following code
mapOverlays = mapView.getOverlays();
drawable = this.getResources().getDrawable(R.drawable.balloon);
itemizedOverlay = new MarkerItemizedOverlay(drawable,this);
GeoPoint point;
OverlayItem overlayitem;
for (DalMapSearch t : Sr)
{
if(t != null)
{
point = new GeoPoint((int) (t.getLati() * 1E6), (int) (t.getLongi() * 1E6));
overlayitem = new OverlayItem(point, heading, t.getAd_text()+", "+t.getLocation()+"@@"+t.getAd_id());...................
so in such a scenario balloon is displayed i want to show other images too depened upon category or a if statement. any one guide me how can i show different images as a map overlay? for example images are imageA,ImageB,ImageC
I'm currently developing an app for Android which uses google map service. Because users will be able to see thousands of markers I would like to load only those which are currently within the map bounds (i.e. when user look at specific map tile). I know how to do it with javascript/html. However, Android doesn't seem to provide any similar methods such as containsLatLng(latlng) or getBounds (I only found getLatitudeSpan and getLongitudeSpan, but don't know how can I use them in order to achieve the similar effect). Can anyone give me some hint on that?
View 4 Replies View RelatedGot some errors following the tutorial for MapView when i was going to integrate overlays.
CODE:..............
I am trying to learn and i got an awesome app idea which needs mapview, webview, overlays and tabs.
What can I do with the "shadow layer" of the the google maps overlays? I tried, naively, to draw something (an arc) only when (shadow == true) and got nothing? I'm interested in drawing arcs and arc shadows on a map. is there a nice google-maps way to do this?
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I have thousands. The site only lets u delete 10 at a time. Is thete another way to delete all entries?
View 1 Replies View RelatedI wanted to know how to add marker on a map? right now, i am trying to build an application that shows the persons current location, and i can follow it. but the problem is i don't have a pointer, so the changing is vague. what i want is to show the persons location with a marker(e.g some kind of bubble) and follow it.=
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View 1 Replies View RelatedI have done my fair share of google searches for this and have come up empty.
I have a set of marker(25) that are being displayed on a MapView. I would love to be able to have it zoom to a reasonable level to make the markers readable.
I have lot of markers on my map. Zooming in each marker shows me a position. but zooming out the markers are overlapping each other and it is more difficult do determine the position of a marker.
Is there a way to scale the marker image depending on the zoom factor?
On my app I will be reading in from an XML file thats formatted something like this
<database> <db1>
<db> <name>name here</name> <street>street here</street> <long> longitude here</long> <lat> latitude here </lat> </db>
<db> <name> new name here </name> <street> new street here </street> <long> new longitude here </long> <lat> new latitude here </latitude> </db>
</db1> </database>
With this information I need to create Overlay Markers on the map (using latitude and longitude) and when they're clicked on I need it to display the name with the address. Depending on the conditions of where the map is, the number of markers will be different so I need a dynamic model for reading in these markers.
If I were to use Document methods like getElementById(String name) then I couldn't call getElementById("name") because it would likely try to call just the first <name></name> or give an unintended result.
I recently had my DI replaced due to a tech issue, but before I switched over I backed up everything using "My Backup Pro".
When it backed up my contacts, it backed up EVERYONE - including 550+ people I follow in Twitter. I did not have these as visible in my People (phonebook) list, just in Twitter. When I synced with my new DI, My Backup Pro installed every contact to my People list, as the app must have thought it was all part of my phonebook. I tried to make the list invisible like I had it on my original phone, but that did not work, so I deleted each Twitter contact manually from my People list. They no longer show in my People list (though are available to be made visible from Twitter).
This did not solve the problem. Any app that accesses my contact list (even Search People) displays the FULL list which includes my Twitter contacts. There is no long-press or menu options available to hide them.
I am willing to clear my contacts and upload the list again, as they are all backed up to my Google account, but I am afraid it would sync with the server and delete what is saved there.
Any advice on how to clear my contact list of my Twitter followers, or start over with my Google-saved contacts?
Using Google Maps on Android does anyone have any ideas on how to load only markers that would be displayed on the current screen? I'm thinking about sending a request to a web service that returns the lat/lng for the relevant markers. But what would the parameters be that I could use to calculate if a given lat/lng is within the screen?
View 1 Replies View RelatedI'm scaling markers on a MapView with the following code
CODE:.........
And:
CODE:.............
Which works, but the shadow below the marker has wrong offset when scaled. Also; i override the public boolean onTap(int index) in ItemizedOverlay to detect taps on the markers, but it seems inaccurate. I can click some range outside the marker and still trigger onTap...
As the object of this topic. is there a limit for the numebr of markers to show on a MapView at the same time with the Google API?
View 3 Replies View RelatedI'd like to know if there is already a way to know from a given set of markers, the zoom I should apply to the map or do I have to do it my self? (this depends on the resolution so i expected to find it in MapView because it knows its boundaries.
View 4 Replies View RelatedWhat I am trying to do - I am continuously getting a stream of lat/lng positions, I want to move a overlay item dynamically on the map based on the lat/lng in the stream. I am displaying the location of moving object dynamically on the map
I am putting my whole code in a while(true) loop and trying to read the stream every 5 seconds and refresh the overlays on the map. But overlay items are not shown until the function (either oncreate, or any onclickeventhandler etc) is completed. For example, test code, I am adding a single test overlay item when ever the user clicks on a button. If I put a wait(2000000) "after" I add overlays and invalidate the map, the overlay is not displayed until the time has elapsed and the function is completed.