Thank you for filling us in on the issue once you found it. Interesting that
it was what it was.
On Tue, Jan 12, 2010 at 10:05 PM, jgostylo <jgost...@gmail.com> wrote:
> I finally found my issue. For some reason:
> face = Typeface.createFromAsset(context.getAssets(), "fonts/
> sd_led_screen.ttf");
> was not letting go of all its resources. I am not sure the exact
> mechanics but I think it was filling the cache and not releasing that
> memory.
>
> When I pull out the font into my singleton activity and reference it
> from my overlays everything seems to work correctly and I don't run
> out of memory quickly.
>
> On Jan 11, 8:31 am, jgostylo <jgost...@gmail.com> wrote:
> > I have done some additional investigation and it seems that many
> > people are having similar symptoms but their fixes aren't working for
> > me. One person said they had threads that were not dying but I have
> > checked that my thread count does not continually increase.
> >
> > I have been using ExecutorService as set up with
> > Executors.newSingleThreadExecutor(); to run my server requests. I
> > also changed it to just run the handler as a normal thread to see if
> > that would help out.
> >
> > I have several other Handlers running as ExecutorService in other
> > activities as well as some processes running as a normal thread that
> > uses newBM = BitmapFactory.decodeStream(bis); and those do not produce
> > the memory leak.
> >
> > The issue seems to be narrowing down to the map overlays. Can someone
> > tell me how to accurately destroy an overlay because it seems like
> > they are hanging around (though how to detect them I am not sure).
> >
> > On Jan 10, 8:21 am, jgostylo <jgost...@gmail.com> wrote:
> >
> >
> >
> > > I have been banging away at this one for weeks and I feel like I have
> > > exhausted my research capabilities. I am hoping that someone will see
> > > my error in the code posted below. The code is completely functional
> > > doing everything I need, but there is a major memory leak.
> >
> > > When I try to track memory in the DDMS, the VM Heap tells me that my
> > > object count is relatively stable and the used memory is also
> > > relatively stable (it comes back down to a similar value after each GC
> > > after panning). When I look at the memory pie chart, the free memory
> > > loses over 1meg of capacity with each map pan (overlay reload) and the
> > > Unknown memory grows. I have not found anything with the allocation
> > > tracker.
> >
> > > Functional Summary:
> > > I load overlays onto a map based on data I get from polling my
> > > server. When I pan the map far enough I clear the overlays and load
> > > new ones.
> >
> > > MapFrontEnd.java (snippets):
> > > //header info
> > > private List<Overlay> overlays;
> >
> > > //in onCreate
> > > overlays = mapView.getOverlays();
> > > ...
> > > // here I attempt to fully clean up my old Overlays
> > > for (Overlay i : overlays)
> > > {
> > > if (i instanceof ParcelOverlay)
> > > ((ParcelOverlay) i).cleanUp();}
> >
> > > overlays.clear();
> >
> > > // and now I create the new overlays and add them to the Overlay list
> > > int count = 0;
> > > while (count < parcelData.length)
> > > {
> > > try
> > > {
> > > overlays.add(new ParcelOverlay(MapFrontEnd.this,
> parcelData
> > > [count]));
> > > }
> > > ...
> > > count++;
> >
> > > }
> >
> > > ParcelOverlay.java (necessary snippets):
> >
> > > public class ParcelOverlay extends Overlay {
> >
> > > private MapFrontEnd context;
> > > private Location location;
> > > private GeoPoint locationPoint;
> > > private int parcelSize;
> > > private int price;
> > > private String priceString;
> > > private String owner;
> > > private int buildingCount;
> > > private int haunted;
> > > private Bitmap buildingBitmap = null;
> > > private Bitmap ghostBitmap = null;
> > > private Bitmap presentBitmap = null;
> >
> > > private boolean selected = false;
> >
> > > private int backgroundColor; // ARGB
> > > private int gridlineColor;
> > > private int selectedColor = 0xBBFAFA14;
> >
> > > private Typeface face;
> >
> > > // draw variables
> > > private GeoPoint sizePoint;
> > > private Paint rectOverlay = new Paint();
> > > private Paint rectGrid = new Paint();
> > > private Paint textPaint = new Paint();
> > > private Paint imagePaint = new Paint();
> > > Point topLeft = new Point();
> > > Point bottomRight = new Point();
> >
> > > Point bottomLeft = new Point();
> > > Point topRight = new Point();
> >
> > > public ParcelOverlay(MapFrontEnd _context, ParcelData _parcel)
> {
> > > super();
> > > context = _context;
> > > locationPoint = new GeoPoint(_parcel.latitude,
> > > _parcel.longitude);
> > > parcelSize = _parcel.size;
> > > price = _parcel.cost;
> > > owner = _parcel.owner;
> > > buildingCount = _parcel.buildingNumber;
> > > haunted = _parcel.haunted;
> > > prize = _parcel.prize;
> > > priceString = Integer.toString(price);
> >
> > > sizePoint = new GeoPoint(locationPoint.getLatitudeE6() +
> > > parcelSize, locationPoint.getLongitudeE6() + parcelSize);
> >
> > > face = Typeface.createFromAsset(context.getAssets(),
> "fonts/
> > > sd_led_screen.ttf");
> >
> > > setupColors();
> >
> > > textPaint.setColor(0xd8000000);
> > > textPaint.setTextSize(25);
> > > textPaint.setTypeface(face);
> > > }
> >
> > > @Override
> > > public void draw(Canvas canvas, MapView mapView, boolean
> shadow) {
> > > // there are no new objects created in draw
> > > if (shadow == false) {
> > > ...
> > > if (buildingBitmap != null)
> > > canvas.drawBitmap(buildingBitmap,
> (float)(bottomLeft.x + 5),
> > > (float)(topRight.y + 5), imagePaint);
> >
> > > if (ghostBitmap != null)
> > > canvas.drawBitmap(ghostBitmap,
> (float)(topRight.x - 30), (float)
> > > (topRight.y + 3), imagePaint);
> >
> > > if (presentBitmap != null)
> > > canvas.drawBitmap(presentBitmap,
> (float)(topRight.x - 30),
> > > (float)(bottomLeft.y - 16), imagePaint);
> > > ...
> > > }
> > > super.draw(canvas, mapView, shadow);
> > > }
> >
> > > private void setupColors()
> > > {
> > > ... //code for setting Paint colors
> >
> > > // set the building bitmap
> > > if (buildingCount > 5)
> > > buildingBitmap = BitmapFactory.decodeResource
> > > (context.getResources(), R.drawable.mainstreet);
> > > else if (buildingCount > 2)
> > > buildingBitmap = BitmapFactory.decodeResource
> > > (context.getResources(), R.drawable.tradingpost);
> > > else if (buildingCount > 0)
> > > buildingBitmap = BitmapFactory.decodeResource
> > > (context.getResources(), R.drawable.generalstore);
> > > else if (buildingCount == 0)
> > > {
> > > if (buildingBitmap != null)
> > > {
> > > buildingBitmap.recycle();
> > > buildingBitmap = null;
> > > }
> > > }
> > > else
> > > buildingBitmap = BitmapFactory.decodeResource
> > > (context.getResources(), R.drawable.playerstore);
> >
> > > if (haunted == 1)
> > > ghostBitmap =
> BitmapFactory.decodeResource(context.getResources
> > > (), R.drawable.ghostsmall);
> > > else if (ghostBitmap != null)
> > > {
> > > ghostBitmap.recycle();
> > > ghostBitmap = null;
> > > }
> >
> > > if (prize == 1)
> > > presentBitmap =
> BitmapFactory.decodeResource(context.getResources
> > > (), R.drawable.present);
> > > else if (presentBitmap != null)
> > > {
> > > presentBitmap.recycle();
> > > presentBitmap = null;
> > > }
> > > }
> >
> > > public void cleanUp()
> > > {
> > > context = null;
> >
> > > if (buildingBitmap != null)
> > > {
> > > buildingBitmap.recycle();
> > > buildingBitmap = null;
> > > }
> > > if (ghostBitmap != null)
> > > {
> > > ghostBitmap.recycle();
> > > ghostBitmap = null;
> > > }
> > > if (presentBitmap != null)
> > > {
> > > presentBitmap.recycle();
> > > presentBitmap = null;
> > > }
> > > }
>
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