我正在编写一个与谷歌地图和上面的标记有关的应用程序。 我的任务是在谷歌地图上创建和显示一定数量的标记。标记具有自定义图像和文本。数据从服务器加载,我需要每次用户移动谷歌地图相机时显示新的数据量。因此,我使用 android-maps-utils:0.4.3 库来创建自定义位图(使用 IconGenerator),然后从中创建 BitmapDescriptor。以下是代码的一部分:
googleMap.clear()
LayoutInflater layoutInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
IconGenerator clusterIconGenerator = new IconGenerator(getActivity());
View clusterView = layoutInflater.inflate(R.layout.marker_cluster_view, null, false);
clusterIconGenerator.setContentView(clusterView);
clusterIconGenerator.setBackground(ContextCompat.getDrawable(getActivity(), R.drawable.mark_normal_grey));
List<Cluster> clusters = result.getResult(); // server data
for (Cluster cluster : clusters) {
Bitmap bitmap = clusterIconGenerator.makeIcon(String.valueOf(cluster.getOffersCount()));
Marker marker = googleMap.addMarker(new MarkerOptions()
.position(new LatLng(cluster.getLocation().getLatitude(), cluster.getLocation().getLongitude()))
.icon(BitmapDescriptorFactory.fromBitmap(bitmap)) // crash here
.anchor(0.5f, 0.5f));
markerClusterMap.put(marker, cluster);
}
除了应用程序偶尔会崩溃外,一切都正常(不是很频繁),且出现了两种不同的异常:
java.lang.RuntimeException: Could not copy bitmap to parcel blob.
at android.graphics.Bitmap.nativeWriteToParcel(Native Method)
at android.graphics.Bitmap.writeToParcel(Bitmap.java:1541)
at com.google.android.gms.maps.model.a.c.a(:com.google.android.gms:237)
at com.google.android.gms.maps.internal.h.a(:com.google.android.gms:227)
at com.google.android.gms.maps.internal.j.a(:com.google.android.gms:183)
at com.google.android.gms.maps.internal.CreatorImpl.a(:com.google.android.gms:32)
at com.google.android.gms.maps.internal.b.a(:com.google.android.gms:227)
at com.google.android.gms.maps.model.a.b.onTransact(:com.google.android.gms:106)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.maps.model.internal.zza$zza$zza.zzc(Unknown Source)
at com.google.android.gms.maps.model.BitmapDescriptorFactory.fromBitmap(Unknown Source)
at com.cheapsta.cheapsta.fragments.GoogleMapFragment.clustersLoadingFinished(GoogleMapFragment.java:187)
有时候
java.lang.RuntimeException: Could not allocate dup blob fd.
at android.graphics.Bitmap.nativeCreateFromParcel(Native Method)
at android.graphics.Bitmap.-wrap0(Bitmap.java)
at android.graphics.Bitmap$1.createFromParcel(Bitmap.java:1516)
at android.graphics.Bitmap$1.createFromParcel(Bitmap.java:1515)
at maps.bx.a$a.onTransact(:com.google.android.gms.alldynamite:101)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.maps.model.a.c.a(:com.google.android.gms:242)
at com.google.android.gms.maps.internal.h.a(:com.google.android.gms:227)
at com.google.android.gms.maps.internal.j.a(:com.google.android.gms:183)
at com.google.android.gms.maps.internal.CreatorImpl.a(:com.google.android.gms:32)
at com.google.android.gms.maps.internal.b.a(:com.google.android.gms:227)
at com.google.android.gms.maps.model.a.b.onTransact(:com.google.android.gms:106)
at android.os.Binder.transact(Binder.java:387)
at com.google.android.gms.maps.model.internal.zza$zza$zza.zzc(Unknown Source)
at com.google.android.gms.maps.model.BitmapDescriptorFactory.fromBitmap(Unknown Source)
at com.cheapsta.cheapsta.fragments.GoogleMapFragment.clustersLoadingFinished(GoogleMapFragment.java:187)
这个东西能做什么?我猜我使用了太多的内存来创建BitmapDescriptors。如果用户频繁移动相机,每3秒钟就会有近20个BitmapDescriptors。我应该通过某种方式进行缓存吗?非常感谢您的答复和时间!
LruCache
对BitmapDescriptor
生成IconGenerator
的例子吗?尤其是在处理位图大小时,你是如何解决sizeOf
的问题的? - Dellkan