android - google maps api v2 out of memory error -


i have huge memory problem in app. using google map api v2 clustermanager , custom markers. supply image via call markeroptions.icon(bitmapdescriptorfactory.frombitmap(bitmap)); each marker based on category. problem is: after several screen rotations app crashes because of oom error:

05-14 11:04:12.692  14020-30201/rokask.rideabike e/art﹕ throwing outofmemoryerror "failed allocate 4194316 byte allocation 1627608 free bytes , 1589kb until oom" 05-14 11:04:12.722  14020-30201/rokask.rideabike e/androidruntime﹕ fatal exception: glthread 19179 process: rokask.rideabike, pid: 14020 java.lang.outofmemoryerror: failed allocate 4194316 byte allocation 1627608 free bytes , 1589kb until oom         @ dalvik.system.vmruntime.newnonmovablearray(native method)         @ android.graphics.bitmap.nativecreate(native method)         @ android.graphics.bitmap.createbitmap(bitmap.java:939)         @ android.graphics.bitmap.createbitmap(bitmap.java:912)         @ android.graphics.bitmap.createbitmap(bitmap.java:879)         @ com.google.maps.api.android.lib6.gmm6.n.c.i.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.c.l.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.c.l.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.c.l.b(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.c.b.ak.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.c.b.as.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.x.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.l.a(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.l.b(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.cv.f(unknown source)         @ com.google.maps.api.android.lib6.gmm6.n.cv.run(unknown source)

i have lrucache object bitmaps, means not recreate them, reuse them. can see every bitmap object taken cache, not elsewhere. however, if bitmap not in cache yet (first time loading) load app's internal storage, happnes when bitmap laoded first time. keep instance of lrucache in retained fragment instance , pass custom defaultclusterrenderer<myobject> object everytime activity recreated , map needs redrawn.

this defaultclusterrenderer<myitem> extension:

public class dotrenderer extends defaultclusterrenderer<dot> { private final string internalstoragedir; private final lrucache<string, bitmap> lrucache;  public dotrenderer(context context, googlemap googlemap, clustermanager<dot> clustermanager,                    lrucache<string, bitmap> lrucache, string internalstoragedir) {     super(context, googlemap, clustermanager);     //this.bitmaps = bitmaps;     this.internalstoragedir = internalstoragedir;     this.lrucache = lrucache; }  @override protected void onbeforeclusteritemrendered(dot mapobject, markeroptions markeroptions) {     markeroptions.title(mapobject.gettitle());     string id = integer.tostring(mapobject.gettypeid());     //     bitmap bitmap = getbitmapfrommemcache(id);     if (bitmap == null) {         log.d(mainactivity.log_tag, "reading bitmap storage.");         map.entry<string, bitmap> bitmapentry                 = bitmapmanager.getbitmapfromstorage(internalstoragedir, id);         if (bitmapentry != null) {             markeroptions.icon(bitmapdescriptorfactory.frombitmap(bitmapentry.getvalue()));             addbitmaptomemcache(id, bitmapentry.getvalue());         }     } else {         log.d(mainactivity.log_tag, "reading bitmap cache.");         markeroptions.icon(bitmapdescriptorfactory.frombitmap(bitmap));     } }  private void addbitmaptomemcache(string key, bitmap bitmap) {     if (getbitmapfrommemcache(key) == null) {         lrucache.put(key, bitmap);     } }  private bitmap getbitmapfrommemcache(string key) {     return lrucache.get(key); } }

this code inside activity start loading map (this code executed everytime screen orientation changes):

    clustermanager<dot> clustermanager = new clustermanager<>(this, googlemap);     clustermanager.setonclusteriteminfowindowclicklistener(             new clustermanager.onclusteriteminfowindowclicklistener<dot>() {                 @override                 public void onclusteriteminfowindowclick(dot dot) {                     int id = dot.getid();                     string title = dot.gettitle();                     log.d(log_tag, "clicked marker id " + id                             + " , title " + title + ".");                     intent infowindowactivityintent =                             new intent(mainactivity.this, infowindowactivity.class);                     infowindowactivityintent.putextra("dotid", id);                     infowindowactivityintent.putextra("dottitle", title);                     startactivity(infowindowactivityintent);                 }             });     googlemap.setoncamerachangelistener(clustermanager);     googlemap.setoninfowindowclicklistener(clustermanager);      dotrenderer dotrenderer =             new dotrenderer(getapplicationcontext(), googlemap, clustermanager,                     lrucache, this.getfilesdir().tostring());     clustermanager.setrenderer(dotrenderer);

the memory keeps increasing every screen rotation, more zoom in map (the more markers shown) more amount of memory added app's heap when rotate screen until application crashes.

sometimes error not above, shows oom happened @ line in defaultclusterrenderer<myitam> extension markeroptions.icon(bitmapdescriptorfactory.frombitmap(bitmap));.

if disable custom marker icon (remove bitmap related code) memory problem vanishes. please me find causes oom appear.

i ran problem trying run app on demo mode few hours @ time. no matter tried, after 30 minutes, see crash without readable stack report.

i tried system gc(), detaching fragment, singleton activities, updating google play services latest, clearing references overlays, attaching map lifecycle activity , not. after many failed attempts , lot of frustration found worked. it's not fix map bug, kept app crashing:

    <application     ...     android:largeheap="true">

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