Home > Android, Java, programming > Android – ItemizedOverlay + ArrayIndexOutOfBoundsException / NullPointerException workarounds

Android – ItemizedOverlay + ArrayIndexOutOfBoundsException / NullPointerException workarounds

There’s some gotchas to be aware of when using the ItemizedOverlay class Google provides.

Here’s the situation (a fairly common one): You have a dynamic list of Icons you wish to display on a map.  The list can grow and shrink.  You might think the following would work:

public class CustomItemizedOverlay extends ItemizedOverlay {

	private ArrayList mOverlays = new ArrayList();

	public CustomItemizedOverlay(Drawable defaultMarker, Context mContext, MapView view) {

	protected COINOverlayItem createItem(int i) {
		return mOverlays.get(i);

	public int size() {
		return mOverlays.size();

	public void addOverlay(COINOverlayItem overlay) {

	public void clear() {

Seems like a reasonable assumption, doesn’t it?  If you try to use this class, you will immediately see a problem – if you do not add any items to the list before it is displayed, you will get a NullPointerException.  This is well documented in two separate threads; Google has marked the issue as Won’tFix.  The workaround is to call populate() within the constructor.  OK, that’s fine.  Our new constructor looks like this:

public CustomItemizedOverlay(Drawable defaultMarker, Context mContext, MapView view) {

	        // Workaround for null pointer exception with empty list
		// <a href="http://osdir.com/ml/AndroidDevelopers/2009-08/msg01605.html">http://osdir.com/ml/AndroidDevelopers/2009-08/msg01605.html</a>
		// <a href="http://code.google.com/p/android/issues/detail?id=2035">http://code.google.com/p/android/issues/detail?id=2035</a>

You’re not out of the woods yet, though. Say you have clicked on one of the icons on the map. Now say you somehow change your list of icons, e.g. by clearing all of them off the map. Click on the same point where the icon USED to be, and you’ll be faced with a nasty stack trace:

10-19 11:02:48.009: ERROR/AndroidRuntime(1375): java.lang.ArrayIndexOutOfBoundsException
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.ItemizedOverlay.maskHelper(ItemizedOverlay.java:562)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.ItemizedOverlay.setFocus(ItemizedOverlay.java:365)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.ItemizedOverlay.focus(ItemizedOverlay.java:539)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:455)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at org.mitre.coin.map.COINItemizedOverlay.onTap(COINItemizedOverlay.java:63)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:346)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at android.view.GestureDetector.onTouchEvent(GestureDetector.java:503)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at com.google.android.maps.MapView.onTouchEvent(MapView.java:623)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at org.mitre.coin.view.ModifiedMapView.onTouchEvent(ModifiedMapView.java:26)
10-19 11:02:48.009: ERROR/AndroidRuntime(1375):     at android.view.View.dispatchTouchEvent(View.java:3368)

The source is closed, so you have no idea what is throwing the ArrayIndexOutOfBounds; it’s in code you didn’t write. Once again, there’s a workaround for it, but it’s certainly not intuitive, nor is it mentioned in the documentation. You must called setLastFocusedIndex(-1); whenever you structurally modify the list, but before you call populate(). The issue is documented in more detail here.

The skeleton now looks like the following:

public class CustomItemizedOverlay extends ItemizedOverlay {

	private ArrayList mOverlays = new ArrayList();

	public CustomItemizedOverlay(Drawable defaultMarker, Context mContext, MapView view) {

		// Workaround for bug that Google refuses to fix:
		// <a href="http://osdir.com/ml/AndroidDevelopers/2009-08/msg01605.html">http://osdir.com/ml/AndroidDevelopers/2009-08/msg01605.html</a>
		// <a href="http://code.google.com/p/android/issues/detail?id=2035">http://code.google.com/p/android/issues/detail?id=2035</a>

	protected COINOverlayItem createItem(int i) {
		return mOverlays.get(i);

	public int size() {
		return mOverlays.size();

	public void addOverlay(COINOverlayItem overlay) {

	public void clear() {
		numItems = 0;
		// Workaround for another issue with this class:
		// <a href="http://groups.google.com/group/android-developers/browse_thread/thread/38b11314e34714c3">http://groups.google.com/group/android-developers/browse_thread/thread/38b11314e34714c3</a>

Hopefully this pops up in Google and saves some people some trouble.

Categories: Android, Java, programming Tags:
  1. jk
    April 20, 2010 at 2:17 pm

    Damn. Thank you.

  2. Rob Crowell
    April 21, 2010 at 8:59 pm

    This helped me a ton! Thanks a bunch for these two workarounds.

  3. Serge
    April 26, 2010 at 10:56 am

    Thanks, your a star!

  4. DaveR
    April 29, 2010 at 4:57 am

    Nice one 😉 many thanks

  5. June 18, 2010 at 7:03 am

    Ok man, thanks a lot!!

  6. whiskas
    August 5, 2010 at 5:03 am

    Thanks a lot man !!! I spent so much time without find this damn problem >.<;

  7. August 11, 2010 at 10:43 am

    Wow… I can’t believe this is documented better. Nice job! Solved all of my problems! I’m sending links around to this now.

  8. DP
    August 13, 2010 at 6:24 am

    Thanks! You saved my day (and a lot of troubles i had the last weeks)

  9. Simone
    August 26, 2010 at 4:13 pm

    Thank you SO MUCH!

  10. Salman
    September 3, 2010 at 7:56 am

    … very obscure problem…. thanks a lot for this write up / solution!!

  11. i82much
    September 3, 2010 at 8:44 am

    Haha, it may be obscure but this is far and away the most commented article on this blog. Looks like they still haven’t fixed this problem.. oy.

  12. Johan
    September 11, 2010 at 12:33 pm

    Thank you!

    Say that you want to only remove one item from your list, how do you do that? I tried with mOverlays.remove(index) but keep getting the same exception, not on all items but some of them.

  13. October 18, 2010 at 1:03 pm

    As far as I can see, that works as long as you are updating the list from the UI thread but if you have another thread updating the list, you will run back into the ArrayIndexOutOfBoundsExeception. As an ugly workaround, I synchronized adding elements to list, size() and get methods. The downside is that this will freeze the map for a second if there are lots of items to add.

  14. Rob
    October 23, 2010 at 12:53 pm

    Thanks! You are helping a lot of people. Damn Google documentation sucks. This post is the ONLY solution to the problem.

    • i82much
      October 24, 2010 at 6:53 pm

      Glad it was helpful – if you find anyone running into this problem, send them on my way

    • February 7, 2012 at 3:52 am

      My solution to update from a background thread is to use an AsyncTask to fetch the data in background and then update the map in the UI thread using AsyncTask’s onProgressUpdate().

  15. havanakoda
    February 5, 2011 at 12:20 pm

    I have the same problem but your solution doesn’t work for me;
    I add an overlay every time that an user tap on the screen and I would like that an user can be able to delete an overlay by tapping on it but every time I get an error, and i don’t know how to make it work.

    • i82much
      February 5, 2011 at 12:50 pm

      Post your code (or link to it) and I’ll try to help you out.

  16. havanakoda
    February 6, 2011 at 4:57 am

    this are the two implementation of onTap() that I’m using:

    private class PoiOverlay extends ItemizedOverlay{
    private ArrayList mOverlays = new ArrayList();
    private Context context;
    private int mSize;

    public PoiOverlay(Context context) {


    // TODO Auto-generated constructor stub

    protected boolean onTap(int index) {

    int id=mOverlays.get(index).id;


    return true;

    public boolean onTap(GeoPoint p, MapView mapView) {
    // TODO Auto-generated method stub
    if (super.onTap(p,mapView))
    return true;
    createOverlay(p); //here i create and add a new overlay
    return true;

    public void addOverlay(MyOverlayItem overlay) {
    Drawable drawable=getMarker(overlay.markerInt);

    protected MyOverlayItem createItem(int i) {
    // TODO Auto-generated method stub
    return (mOverlays.get(i));

    public int size() {
    // TODO Auto-generated method stub
    return mOverlays.size();

    public void draw(Canvas canvas, MapView mapView, boolean shadow) {
    // TODO Auto-generated method stub
    super.draw(canvas, mapView, shadow);

    private Drawable getMarker(int resource) {
    Drawable marker=getResources().getDrawable(resource);

    marker.setBounds(0, 0, marker.getIntrinsicWidth(),marker.getIntrinsicHeight());


    public void clear() {


    class MyOverlayItem extends OverlayItem{
    public int id;
    public int type;
    Drawable marker;
    public int markerInt;

    public MyOverlayItem(GeoPoint point, String title, String snippet, int id, int markerInt) {
    super(point, title, snippet);

    // TODO Auto-generated constructor stub

    public Drawable getMarker(int stateBitset) {

    setState(marker, stateBitset);
    return marker;


    • February 6, 2011 at 9:11 am

      I looked through the code and made some comments here: http://pastebin.com/KQK8XaQm

      Let me know if that helps. Otherwise I’d need some more information to go off of, namely the stack traces, or what’s going wrong.

  17. havanakoda
    February 6, 2011 at 9:15 am

    Thanks for your reply, but I already did that:
    with createOverly I call a method in my MapActivity class that create an overlay calling addOverlay on my itemizedOverlay istance.. but it doesn’t work again…

    • i82much
      February 6, 2011 at 9:36 am

      “I add an overlay every time that an user tap on the screen and I would like that an user can be able to delete an overlay by tapping on it but every time I get an error, and i don’t know how to make it work.”

      what’s the error, please post a stack trace

  18. havanakoda
    February 6, 2011 at 9:38 am

    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): FATAL EXCEPTION: main
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at java.util.ArrayList.get(ArrayList.java:311)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.ItemizedOverlay.getItem(ItemizedOverlay.java:419)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.ItemizedOverlay.focus(ItemizedOverlay.java:538)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:455)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at offscreen.tagger.Main$PoiOverlay.onTap(Main.java:306)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:347)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.GestureDetector.onTouchEvent(GestureDetector.java:533)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.google.android.maps.MapView.onTouchEvent(MapView.java:647)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.View.dispatchTouchEvent(View.java:3765)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:905)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:944)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:944)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:944)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:944)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1701)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1116)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.app.Activity.dispatchTouchEvent(Activity.java:2093)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1685)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.view.ViewRoot.handleMessage(ViewRoot.java:1802)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.os.Handler.dispatchMessage(Handler.java:99)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.os.Looper.loop(Looper.java:144)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at android.app.ActivityThread.main(ActivityThread.java:4937)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at java.lang.reflect.Method.invokeNative(Native Method)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at java.lang.reflect.Method.invoke(Method.java:521)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
    02-06 15:37:45.749: ERROR/AndroidRuntime(3215): at dalvik.system.NativeStart.main(Native Method)

  19. i82much
    February 6, 2011 at 10:06 am

    You mention earlier “I already did that” and talk about the add method. But the most important two lines that I added to your code were in the *remove* method:

    protected boolean onTap(int index) {
    int id=mOverlays.get(index).id;

    // Try adding these lines:

    return true;

    As I mention in the post, any time you structurally modify the internal list you first call setLastFocusedIndex(-1), then call populate.

    If those lines exactly as I wrote them are in your code and you’re still getting the problem, then I’m not sure what’s going on.

  20. havanakoda
    February 6, 2011 at 10:15 am

    I added the two lines as you suggested me, but I’m still having the problem. Maybe have I to remove all the overlays and re-adding all of them but not the selected one ??

  21. James
    February 19, 2011 at 2:42 pm

    You sir are in my debt!

    • i82much
      February 19, 2011 at 5:43 pm

      Thanks.. I think?

  22. Peter
    April 8, 2011 at 5:22 am

    @i82much: HI, very good explanation of the problem. But can you please post the code to synchronize the methods?(Because i have to remove OverlayItems from a Timer thread)

    • i82much
      April 8, 2011 at 6:32 am

      Very good question. I never had to periodically remove the items, and I haven’t investigated the best way to synchronize it. You could probably add synchronized(mOverlays) block around the bodies of the three methods that access/modify the list.

  23. Peter
    April 8, 2011 at 7:14 am

    I tried that (“add synchronized(mOverlays) block around […]”) and synchronized my other methods, which modify the mOverlays list. But then i get another exception:

    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): FATAL EXCEPTION: main
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): java.util.ConcurrentModificationException
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at java.util.ArrayList$ArrayListIterator.next(ArrayList.java:573)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at com.google.android.maps.OverlayBundle.draw(OverlayBundle.java:44)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at com.google.android.maps.MapView.onDraw(MapView.java:494)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at android.view.View.draw(View.java:6740)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at android.view.ViewGroup.drawChild(ViewGroup.java:1640)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
    04-08 14:09:58.949: ERROR/AndroidRuntime(4311): at android.view.View.draw(View.java:6743)

    • i82much
      April 9, 2011 at 6:23 pm

      Is that ArrayList being exposed anywhere else?

  24. Feischmidt Laszlo
    April 9, 2011 at 3:14 am

    Thanx man!

    • i82much
      April 9, 2011 at 6:22 pm

      You’re welcome

  25. Peter
    April 11, 2011 at 6:18 am

    I solved my problem. The solution was not to call the UI thread from another thread (as it mentioned here before i think :-/). Anyway, I post a link to a page, which describe the possible ways to solve the problem: This link provides links to a page where you can find links to other pages (how to use handlers, painless threading etc..

  26. lmh
    May 30, 2011 at 11:49 pm

    Ssi-bal Thank you. I solved !!! 🙂 씨밝 너 천재 너 짱묵어 !! 감사! 쌩유! 넌 천재!

  27. Felipe Vaz
    June 1, 2011 at 12:56 pm

    Thanks man, you save my life. I was almost given up to put a new feature at my software because i can`t solve this bug. Thanks a lot…

  28. rc
    June 18, 2011 at 1:11 am

    You are awesome! These two The ArrayIndexOutOfBoundsException problem was really bugging me.

  29. gibffe
    June 18, 2011 at 5:26 pm

    cheers dude, you made my day !

  30. Han
    June 21, 2011 at 6:08 pm

    Really helpful, thanks a lot.

  31. Timo
    June 23, 2011 at 2:05 am

    Oh wow, thanks a lot. Saved me a lot of time !!

  32. CeHa
    June 26, 2011 at 6:54 pm

    OMG, I just spend 4 hours looking for solution!
    Thanks a lot!

  33. Ben
    June 27, 2011 at 9:45 am

    Thanks a million times for the setLastFocusedIndex(-1) fix! You saved me hours of debugging.

  34. Simon
    July 31, 2011 at 11:27 am

    hi thanks a lot for this! unfortunately, i still have this ArryIndexOutOfBound error you described when running my code: http://pastebin.com/9giTshz4

    When I add some markers on the map, I can all of them except the one I added at last. The last one added causes this error:

    07-31 16:16:34.187: ERROR/AndroidRuntime(1355): Uncaught handler: thread main exiting due to uncaught exception
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): java.lang.IndexOutOfBoundsException: Invalid location 0, size is 0
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at java.util.ArrayList.get(ArrayList.java:353)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.ItemizedOverlay.getItem(ItemizedOverlay.java:419)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.ItemizedOverlay.focus(ItemizedOverlay.java:538)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.ItemizedOverlay.onTap(ItemizedOverlay.java:455)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.OverlayBundle.onTap(OverlayBundle.java:83)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.MapView$1.onSingleTapUp(MapView.java:346)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.GestureDetector.onTouchEvent(GestureDetector.java:503)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.google.android.maps.MapView.onTouchEvent(MapView.java:623)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.View.dispatchTouchEvent(View.java:3368)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:831)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:863)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1707)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1197)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.app.Activity.dispatchTouchEvent(Activity.java:1993)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1691)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.view.ViewRoot.handleMessage(ViewRoot.java:1525)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.os.Handler.dispatchMessage(Handler.java:99)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.os.Looper.loop(Looper.java:123)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at android.app.ActivityThread.main(ActivityThread.java:3948)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at java.lang.reflect.Method.invokeNative(Native Method)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at java.lang.reflect.Method.invoke(Method.java:521)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
    07-31 16:16:34.208: ERROR/AndroidRuntime(1355): at dalvik.system.NativeStart.main(Native Method)

    can you help me? THX!!

    • arutha
      September 15, 2011 at 10:08 am

      I’ve exactly the same problem.
      Did you find a solution ?

      • January 24, 2012 at 2:49 pm

        Yes! This is exactly the problem I am having as well. If someone found a solution to this it would be great!

  35. September 5, 2011 at 12:45 pm

    I was having no solution to this issue until I found this valuable post. Thanks a lot. Keep up the good work.

  36. Andrea
    September 7, 2011 at 4:35 am

    You are a hero!!!

  37. September 12, 2011 at 3:17 am

    Thanks a lot man !!! I spent many hours with no result, and now I find here a solutions. Thanks again!

  38. f2re
    October 5, 2011 at 2:58 am

    Guys synchronized size() methode lock -it if index <-1 unlock it when adding or remiving overlay, it soles the problem

  39. Fredrik
    November 2, 2011 at 4:20 am

    Awsome! Thanks for the arrayindexoutofboundsexception fix!

  40. Eugene
    November 7, 2011 at 3:29 am

    You are my God!

  41. Tom
    December 15, 2011 at 1:22 pm

    The Google Maps API on Android is one giant ball of fail.

    – Loads of completely unexplained, undocumented generic exceptions which bubble up from the depths of a closed-source code base.

    – Completely substandard documentation (when compared to the rest of the Android API).

    – No support for terrain, street view, and various other layers.

    – No support for the new Fragments API.

    I just don’t get why Google allows this to be the case. They can’t expect developers to create innovative apps which help the platform to compete with iOS if basic APIs like this one are so poor.

    It’s all the more perplexing when you consider that the Maps ecosystem is owned by Google, It’s not like they have to deal with some third party.

  42. Carlos
    December 18, 2011 at 7:00 am

    Interesting -thanks for this.

    @Tom, the last poster, I’ve been having very similar thoughts to you – why are Google allowing this API to languish in such a sub-standard condition yet providing iOS with a vastly superior maps interface?

    I do have a theory – look at the sheer development pace of their own, native Maps application for Android. In recent months, they’ve added loads of new features – restaurant searches, bus times display, etc. So it looks to me like they’re trying to make their Maps app the first ‘go to’ place for anything location-based. By witholding API features from developers, they’re able to get ahead of the competition, so as to speak!

    It’s a valuable (financially speaking) thing for them to own – think of the money to be made from sponsored location-based listings, etc. Google wants you to click their Maps app to find local things, not some 3rd party app which waters down their ad deals.

  43. Led
    December 30, 2011 at 12:50 pm

    Yes, it works !
    Thank you !

  44. Kim
    January 30, 2012 at 12:56 am

    Thank You!!!

  45. karl
    February 23, 2012 at 7:48 am

    Thanks! btw is Google maps not open source? I thought all android was…

  46. March 26, 2012 at 7:52 pm

    That is amazing, thanks for the great write up and taking the time to document!!

    • i82much
      March 26, 2012 at 7:57 pm

      You’re very welcome. It’s comments like yours that motivate me to keep writing

  47. Jam
    April 21, 2012 at 9:38 pm

    Thanks so much for this man … you’re awesome!

  48. Adborn
    June 10, 2012 at 2:09 am

    Thanks man! You’re a lifesaver!

  49. June 14, 2012 at 12:29 am

    Thanks a lot. This indeed is the top google result for “MapView ArrayIndexOutOfBounds exception” :).

  50. June 29, 2012 at 2:47 am

    Thanks a lot, I solved my problem 🙂

  51. July 11, 2012 at 3:20 am

    Thank you very much.

  52. July 18, 2012 at 2:08 am

    You sir, are a life-saver. Thank you. setLastFocusedIndex(-1) was the missing piece of the puzzle.

  53. Kufli
    October 22, 2012 at 8:39 am

    Thank you very much.It helped me a lot.Saved my day.cheers 🙂

  54. November 7, 2012 at 5:30 am

    Thank you!

  55. Seb
    November 8, 2012 at 3:33 pm

    Dear god thank you for this fix

  56. Atx
    November 26, 2012 at 3:38 am


  57. December 11, 2012 at 12:04 pm

    you saved my life man!!!! thanks!!!

  58. Geo
    January 30, 2013 at 12:34 am

    A million thanks. Made my day 🙂

  59. Hyrcanus
    March 31, 2013 at 5:59 am

    Thank you, this helped me!

  1. January 14, 2014 at 5:35 am
  2. June 3, 2014 at 3:16 am

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