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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