Android Mapview Out of Memory Exception_问答_开发者

I have a mapview in my app and whenever the user do too much zoom-in or out the mapview crashes. Following is the data allocation I got from DDMS just when the crash happened:

486 17971   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
422 17966   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
349 17963   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
244 17958   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
172 17935   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
102 17886   byte[]  1   com.google.common.io.android.AndroidPersistentStore readBlock   
96  9526    byte[]  1   com.google.googlenav.map.MapTile    read    
64  9526    byte[]  1   com.google.googlenav.map.MapTile    read    
481 9268    byte[]  1   com.google.googlenav.map.MapTile    read    
462 9268    byte[]  1   com.google.googlenav.map.MapTile    read    
345 9058    byte[]  1   com.google.googlenav.map.MapTile    read    
289 9058    byte[]  1   com.google.googlenav.map.MapTile    read    
418 8994    byte[]  1   com.google.googlenav.map.MapTile    read    
400 8994    byte[]  1   com.google.googlenav.map.MapTile    read    
236 8808    byte[]  1   com.google.googlenav.map.MapTile    read    
164 8421    byte[]  1   com.google.googlenav.map.MapTile    read    
92  8351    byte[]  1   com.google.googlenav.map.MapTile    read    
479 8076    byte[]  1   com.google.googlenav.map.MapTile    read    
416 7779    byte[]  1   com.google.googlenav.map.MapTile    read    
240 7682    byte[]  1   com.google.googlenav.map.MapTile    read    
219 7682    byte[]  1   com.google.googlenav.map.MapTile    read    
166 7468    byte[]  1   com.google.googlenav.map.MapTile    read    
147 7468    byte[]  1   com.google.googlenav.map.MapTile    read    
342 7415    byte[]  1   com.google.googlenav.map.MapTile    read    
15  4920    long[]  22  com.google.googlenav.map.MapService

I have only one overlay i.e custom overlay

public class ProfilesOverlay extends Overlay {

private static final String TAG="ProfilesOverlay";

private Paint paintCircle;
private Paint paintText;
private  Bitmap heartIcon;
boolean multitouchGesture;
boolean showCounts;

public interface ProfilesOverlayDelegate {
    public List<OverlayInfo> getOverlayInfo();
    public void onOverlayTouched();
    public boolean onOverlayTapped(GeoPoint p);
}

ProfilesOverlayDelegate delegate;


public ProfilesOverlay(ProfilesOverlayDelegate delegate, Resources res, boolean showCounts) {
    this.delegate = delegate;
    this.showCounts = showCounts;


    paintCircle = new Paint();
    paintCircle.setColor(res.getColor(R.color.mapProfileClusterCircle));
    paintCircle.setAntiAlias(true);

        heartIcon = BitmapFactory.decodeResource(res, R.drawable.flirtplace_white);

    paintText = new Paint();
    paintText.setColor(Color.WHITE);
    paintText.setTypeface(Typeface.DEFAULT_BOLD);
    paintText.setTextSize((float)(heartIcon.getHeight() * 0.7));
    paintText.setAntiAlias(true);
}

@Override 
public void draw(Canvas canvas, MapView map, boolean shadow) {

        Projection projection = map.getProjection();
        Point point = new Point();
        int heartWidth = heartIcon.getWidth();
        int heartHeight = heartIcon.getHeight();

        for (OverlayInfo overlay : delegate.getOverlayInfo()) {
            projection.toPixels(overlay.getGeoPoint(), point);

            if(isLocationVisible(point,map)){       

                paintCircle.setAlpha(overlay.getAlphs());
                canvas.drawCircle(point.x, point.y, (int) overlay.getRadius(), paintCircle);
                canvas.drawBitmap(heartIcon, point.x - heartWidth/2, point.y - heartHeight / 2, null);

                if(showCounts) {
                    canvas.drawText(Integer.toString(overlay.getCount()), point.x + heartWidth - App.dp(6), point.y + App.dp(4), paintText);
                }

            }    

    }

        super.draw(canvas, map, shadow);
}


@Override
public boo开发者_开发知识库lean onTouchEvent(MotionEvent event, MapView map) {
    multitouchGesture = event.getPointerCount()>1;
    delegate.onOverlayTouched();    
    return super.onTouchEvent(event, map);
}

@Override
public boolean  onTap(GeoPoint p, MapView map) {
    if (multitouchGesture) {
        return false; // 
    }
    return delegate.onOverlayTapped(p);
}


//check if given location is visible on the screen
private boolean isLocationVisible(Point point, MapView mapView)
{
    Rect currentMapBoundsRect = new Rect();
    mapView.getDrawingRect(currentMapBoundsRect);
    return currentMapBoundsRect.contains(point.x, point.y);

}

}

And I am using it in my activity as :

map = (MapView) findViewById(R.id.map);
        map.getOverlays().add(new ProfilesOverlay(this, activity.getResources(), true));

Stack Trace very common:

06-13 17:27:49.479: ERROR/dalvikvm-heap(20267): 584640-byte external allocation too large for this process.
06-13 17:27:49.479: ERROR/dalvikvm(20267): Out of memory: Heap Size=10339KB, Allocated=9989KB, Bitmap Size=14057KB, Limit=21884KB
06-13 17:27:49.479: ERROR/dalvikvm(20267): Trim info: Footprint=11335KB, Allowed Footprint=11335KB, Trimmed=996KB
06-13 17:27:49.479: ERROR/GraphicsJNI(20267): VM won't let us allocate 584640 bytes
06-13 17:27:49.479: WARN/System.err(20267): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
06-13 17:27:49.479: WARN/System.err(20267):     at android.graphics.Bitmap.nativeCreate(Native Method)
06-13 17:27:49.479: WARN/System.err(20267):     at android.graphics.Bitmap.createBitmap(Bitmap.java:677)
06-13 17:27:49.479: WARN/System.err(20267):     at com.google.android.maps.ZoomHelper.createSnapshot(ZoomHelper.java:444)
06-13 17:27:49.479: WARN/System.err(20267):     at com.google.android.maps.ZoomHelper.beginZoom(ZoomHelper.java:194)
06-13 17:27:49.479: WARN/System.err(20267):     at com.google.android.maps.MapView$2.onScaleBegin(MapView.java:371)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ScaleGestureDetector.onTouchEvent(ScaleGestureDetector.java:248)
06-13 17:27:49.489: WARN/System.err(20267):     at com.google.android.maps.MapView.onTouchEvent(MapView.java:646)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.View.dispatchTouchEvent(View.java:3778)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:919)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:958)
06-13 17:27:49.489: WARN/System.err(20267):     at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1716)
06-13 17:27:49.489: WARN/System.err(20267):     at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1124)
06-13 17:27:49.489: WARN/System.err(20267):     at android.app.Activity.dispatchTouchEvent(Activity.java:2125)
06-13 17:27:49.499: WARN/System.err(20267):     at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1700)
06-13 17:27:49.499: WARN/System.err(20267):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1802)
06-13 17:27:49.499: WARN/System.err(20267):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-13 17:27:49.499: WARN/System.err(20267):     at android.os.Looper.loop(Looper.java:143)
06-13 17:27:49.499: WARN/System.err(20267):     at android.app.ActivityThread.main(ActivityThread.java:5068)
06-13 17:27:49.499: WARN/System.err(20267):     at java.lang.reflect.Method.invokeNative(Native Method)
06-13 17:27:49.499: WARN/System.err(20267):     at java.lang.reflect.Method.invoke(Method.java:521)
06-13 17:27:49.499: WARN/System.err(20267):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-13 17:27:49.499: WARN/System.err(20267):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-13 17:27:49.499: WARN/System.err(20267):     at dalvik.system.NativeStart.main(Native Method)