Reycle Bitmaps in Android

Question

I am using google map view and adding markers to it using this code:

googleMap.addMarker(new MarkerOptions()
.position(chargingStationObject.geoData)
.title(chargingStationObject.name)
.snippet(chargingStationObject.stationAvailability)
.data((chargingStationObject.id))
.icon(iconDescriptor));

iconDescriptor is created like this:

iconDescriptor = BitmapDescriptorFactory.fromResource(getResources()
     .getIdentifier("mapicon", "drawable", getActivity().getPackageName()));

When there are too many markers on my map, the heap is filled to its maximum, and after a while the app crashed with an out-of-memory-exception. This only happens when there are or have been a larger amount of markers on the map. Even after I call .clear(), the heap is still rather large.

Maybe the bitmaps haven't been recycled properly?

have you know about clustering ? – Haresh Chhelana May 09 '14 at 09:20 — Haresh Chhelana, May 09 '14 at 09:20
is this code inside loop? – Biraj Zalavadia May 09 '14 at 09:21 — Biraj Zalavadia, May 09 '14 at 09:21
@Haresh Yes, but I have reasons not to use clustering. – deimos1988 May 09 '14 at 09:27 — deimos1988, May 09 '14 at 09:27
@Biraj Zalavadia Yes, it's inside a loop. – deimos1988 May 09 '14 at 09:27 — deimos1988, May 09 '14 at 09:27

score 0 · Answer 1 · answered May 09 '14 at 09:31

0

Do on thing.

I assume, you are using same marker for all location.

Put the condition here

if(iconDescriptor==null){
            iconDescriptor = BitmapDescriptorFactory.fromResource(getResources().getIdentifier("mapicon", "drawable", getActivity().getPackageName()));
        }

Do not create new bitmap for every marker use just one copy for that and see what happens.

answered May 09 '14 at 09:31

Biraj Zalavadia

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iconDescriptor = BitmapDescriptorFactory... is only called once at onCreate(), I already thought of that :) – deimos1988 May 09 '14 at 09:34
Then you must use clustering for that. – Biraj Zalavadia May 09 '14 at 09:35
Ok, but shouldn't it be possible to recycle those used Bitmaps once they are no longer shown on the map (I'm not sure that they are recycled, that's why I would like to initiate that process myself) – deimos1988 May 09 '14 at 14:35

score 0 · Answer 2 · answered May 09 '14 at 09:34

0

for handle larger amount of markers on google map have to use Google Maps Android Marker Clustering Utility

For find more visit, https://developers.google.com/maps/documentation/android/utility/marker-clustering

answered May 09 '14 at 09:34

Akash Moradiya

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As I said, I have my reasons why I am not clustering my markers :) – deimos1988 May 09 '14 at 09:35

Reycle Bitmaps in Android

2 Answers2