Hi
I am looking for a technique for storing my Overlays in a hashmap
(instead of arraylist) so I can delete them easily
I tried the code below but it crashes, at it.next() with FATAL
EXCEPTION.
I realise i am making an assumption that populate() will iterate
nicely from 0. But I think it should be OK
class MyItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> mOverlays = new
ArrayList<OverlayItem>(); //OLD
private HashMap<String, OverlayItem> mHMOverlays = new
HashMap<String, OverlayItem>();
// pretty standard stuff until ....
@Override
protected OverlayItem createItem(int i) {
if (i == 0) {
it = mHMOverlays.entrySet().iterator();
}
if (it.hasNext()) {
OverlayItem x = (OverlayItem) it.next();
//
crashes here
return x;
}
return null;
}
Can anyone see why it would crash. I am at a loss
I have seen an example that converts the hashmap to an array (in each
call to createItem) but I suspect it would be very inneficient.
LinkedHashMap might be the way to go
Peter
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