Android bitmap out of memory error

I get the famous out of memory error. But i have tried many of the suggested solutions on this problem without any luck. I understand that to prevent a bitmap to exceed the memory, you make a static variable of the drawable (Android docs). But that isn't working in my app because i have so many markers as you can see..

Does anyone have a suggestion to a solution?

for(Poi p : poiarray){
 
                 WeakReference<Bitmap> bitmap = new WeakReference<Bitmap>(p.get_poiIcon());
                 if(bitmap!=null){
 
                     Drawable marker = new BitmapDrawable(Bitmap.createScaledBitmap(bitmap.get(), 60, 60, true));
                 annotationOverLays.add(new CustomAnnotation(marker,p,this,mapView));    
                 //mapView.getOverlays().add(new CustomAnnotation(marker,p,this,mapView));   
                 }
             }
             mapView.getOverlays().addAll(annotationOverLays);
 

ERROR:

05-23 13:08:31.436: E/dalvikvm-heap(22310): 20736-byte external allocation too large for this process.
 05-23 13:08:31.436: E/dalvikvm(22310): Out of memory: Heap Size=23111KB, Allocated=22474KB, Bitmap Size=1505KB
 05-23 13:08:31.436: E/GraphicsJNI(22310): VM won't let us allocate 20736 bytes
 

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