我正在使用Mapsforge 0.6.1,我可以使用以下简化示例重现该问题,该示例基本上是本教程的副本：https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Android-App.md
我做了一些小改动以匹配新版本.
package org.test.mapsforgeexample;import java.io.file;import org.mapsforge.core.model.LatLong;import org.mapsforge.map.androID.graphics.AndroIDGraphicFactory;import org.mapsforge.map.androID.util.AndroIDUtil;import org.mapsforge.map.androID.vIEw.MapVIEw;import org.mapsforge.map.layer.cache.TileCache;import org.mapsforge.map.layer.renderer.TileRendererLayer;import org.mapsforge.map.datastore.MapDataStore;import org.mapsforge.map.reader.Mapfile;import org.mapsforge.map.rendertheme.InternalRendertheme;import androID.app.Activity;import androID.os.Bundle;import androID.os.Environment;public class MainActivity extends Activity { private static final String MAP_file = "berlin.map"; private MapVIEw mapVIEw; @OverrIDe protected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AndroIDGraphicFactory.createInstance(this.getApplication()); this.mapVIEw = new MapVIEw(this); setContentVIEw(this.mapVIEw); this.mapVIEw.setClickable(true); this.mapVIEw.getMapScalebar().setVisible(true); this.mapVIEw.setBuiltInZoomControls(true); this.mapVIEw.getMapZoomControls().setZoomLevelMin((byte) 10); this.mapVIEw.getMapZoomControls().setZoomLevelMax((byte) 20); TileCache tileCache = AndroIDUtil.createTileCache(this,"mapcache",mapVIEw.getModel().displayModel.getTileSize(),1f,this.mapVIEw.getModel().frameBufferModel.getoverdrawFactor()); MapDataStore mapDataStore = new Mapfile(new file(Environment.getExternalStorageDirectory(),MAP_file)); TileRendererLayer tileRendererLayer = new TileRendererLayer(tileCache,mapDataStore,this.mapVIEw.getModel().mapVIEwposition,AndroIDGraphicFactory.INSTANCE); tileRendererLayer.setXmlRendertheme(InternalRendertheme.OSMARENDER); this.mapVIEw.getLayerManager().getLayers().add(tileRendererLayer); this.mapVIEw.setCenter(new LatLong(52.517037,13.38886)); this.mapVIEw.setZoomLevel((byte) 12); } @OverrIDe protected voID onDestroy() { this.mapVIEw.destroyAll(); AndroIDGraphicFactory.clearResourceMemoryCache(); super.onDestroy(); }}要运行该应用程序,我必须将http://download.mapsforge.org/maps/europe/germany/berlin.map下载到我的设备的外部存储器并授予读取权限.该应用程序工作正常,但在一些屏幕旋转后,它崩溃了.
12-16 11:43:34.055 1496-1496/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***12-16 11:43:34.056 1496-1496/? A/DEBUG: Build fingerprint: 'Google/bullhead/bullhead:7.1.1/NMF26F/3425388:user/release-keys'12-16 11:43:34.056 1496-1496/? A/DEBUG: Revision: 'rev_1.0'12-16 11:43:34.056 1496-1496/? A/DEBUG: ABI: 'arm64'12-16 11:43:34.056 1496-1496/? A/DEBUG: pID: 1425,tID: 1449,name: pool-4-thread-1 >>> org.test.mapsforgeexample <<<12-16 11:43:34.056 1496-1496/? A/DEBUG: signal 6 (SIGABRT),code -6 (SI_TKILL),fault addr --------12-16 11:43:34.058 1496-1496/? A/DEBUG: Abort message: 'Error,cannot access an invalID/free'd bitmap here!'12-16 11:43:34.058 1496-1496/? A/DEBUG: x0 0000000000000000 x1 00000000000005a9 x2 0000000000000006 x3 000000000000000812-16 11:43:34.058 1496-1496/? A/DEBUG: x4 0000000000000000 x5 0000000000000000 x6 00000078e82a2000 x7 000000000000000012-16 11:43:34.058 1496-1496/? A/DEBUG: x8 0000000000000083 x9 ffffffffffffffdf x10 0000000000000000 x11 000000000000000112-16 11:43:34.058 1496-1496/? A/DEBUG: x12 0000000000000018 x13 0000000000000000 x14 0000000000000000 x15 003627f486f8cd7512-16 11:43:34.058 1496-1496/? A/DEBUG: x16 00000078e72d5ee0 x17 00000078e727faac x18 0000000007e0f81f x19 00000078c97ff4f812-16 11:43:34.058 1496-1496/? A/DEBUG: x20 0000000000000006 x21 00000078c97ff450 x22 000000000000000b x23 00000000138bedd012-16 11:43:34.058 1496-1496/? A/DEBUG: x24 00000000138c1300 x25 00000078d79047e0 x26 00000078c8e4c720 x27 0000000013b99b9812-16 11:43:34.058 1496-1496/? A/DEBUG: x28 00000000138c12f0 x29 00000078c97fe320 x30 00000078e727ced812-16 11:43:34.058 1496-1496/? A/DEBUG: sp 00000078c97fe300 pc 00000078e727fab4 pstate 0000000package org.test.mapsforgeexample;import java.io.file;import org.mapsforge.core.model.LatLong;import org.mapsforge.map.androID.graphics.AndroIDGraphicFactory;import org.mapsforge.map.androID.util.AndroIDUtil;import org.mapsforge.map.androID.vIEw.MapVIEw;import org.mapsforge.map.layer.cache.TileCache;import org.mapsforge.map.layer.renderer.TileRendererLayer;import org.mapsforge.map.datastore.MapDataStore;import org.mapsforge.map.reader.Mapfile;import org.mapsforge.map.rendertheme.InternalRendertheme;import androID.app.Activity;import androID.os.Bundle;import androID.os.Environment;public class MainActivity extends Activity { private static final String MAP_file = "berlin.map"; private MapVIEw mapVIEw; @OverrIDe protected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AndroIDGraphicFactory.createInstance(this.getApplication()); this.mapVIEw = new MapVIEw(this); setContentVIEw(this.mapVIEw); this.mapVIEw.setClickable(true); this.mapVIEw.getMapScalebar().setVisible(true); this.mapVIEw.setBuiltInZoomControls(true); this.mapVIEw.getMapZoomControls().setZoomLevelMin((byte) 10); this.mapVIEw.getMapZoomControls().setZoomLevelMax((byte) 20); TileCache tileCache = AndroIDUtil.createTileCache(this,13.38886)); this.mapVIEw.setZoomLevel((byte) 12); } @OverrIDe protected voID onDestroy() { this.mapVIEw.destroyAll(); AndroIDGraphicFactory.clearResourceMemoryCache(); super.onDestroy(); }}0000
12-16 11:43:34.549 1496-1496/? A/DEBUG: backtrace:
12-16 11:43:34.549 1496-1496/? A/DEBUG: #00 pc 000000000006bab4 /system/lib64/libc.so (tgkill+8)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #01 pc 0000000000068ed4 /system/lib64/libc.so (pthread_kill+64)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #02 pc 0000000000023f58 /system/lib64/libc.so (raise+24)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #03 pc 000000000001c810 /system/lib64/libc.so (abort+52)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #04 pc 0000000000010c24 /system/lib64/libcutils.so (__androID_log_assert+224)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #05 pc 00000000001073e4 /system/lib64/libandroID_runtime.so (_ZNK7androID6Bitmap11assertValIDEv+40)
12-16 11:43:34.549 1496-1496/? A/DEBUG: #06 pc 00000000001074c8 /system/lib64/libandroID_runtime.so (_ZN7androID6Bitmap11getSkBitmapEP8SkBitmap+20)
12-16 11:43:34.550 1496-1496/? A/DEBUG: #07 pc 000000000010359c /system/lib64/libandroID_runtime.so
12-16 11:43:34.550 1496-1496/? A/DEBUG: #08 pc 0000000001a9a3a0 /system/framework/arm64/boot-framework.oat (offset 0x1686000) (androID.graphics.Canvas.nativeDrawBitmapMatrix+172)
12-16 11:43:34.550 1496-1496/? A/DEBUG: #09 pc 0000000001a9e9b8 /system/framework/arm64/boot-framework.oat (offset 0x1686000) (androID.graphics.Canvas.drawBitmap+148)
12-16 11:43:34.550 1496-1496/? A/DEBUG: #10 pc 000000000000135c /data/data/org.test.mapsforgeexample/cache/slice-mapsforge-map-androID-0.6.0_24fb6ab0ab8de752356b68dd9111194aa0b25568-classes.dex (offset 0x1c000)问题是,当你旋转屏幕时,会调用onDestroy(),然后调用onCreate().我可以通过在地图活动和另一个活动之间切换来复制具有多个活动的更复杂的应用程序.有时,AndroIDGraphicFactory.clearResourceMemoryCache()(onDestroy())中的free资源无法立即重用,无法在onCreate()中重绘地图.
一种可能的解决方案是从onDestroy()中删除调用AndroIDGraphicFactory.clearResourceMemoryCache().正如我所知,这在Mapsforge 0.6.0中根本没有任何意义,因为它也在destroyAll()中调用,删除该调用会导致大量内存泄漏.
在当前版本0.6.1中,使用以下方法,确实不会发生错误,因为从不调用AndroIDGraphicFactory.clearResourceMemoryCache().
@OverrIDeprotected voID onDestroy() { this.mapVIEw.destroyAll(); super.onDestroy();}虽然我的应用似乎工作正常,但我仍然不相信,因为我认为仍有资源泄漏.这是真的还是解决方案就好了？有没有更好的,可能在代码中有不同的点来打开/关闭AndroIDGraphicFactory？任何提示将受到高度赞赏.
我正在使用Nexus 5X和AndroID 7.1.1进行测试,但我可以在多个设备和 *** 作系统版本上重现此问题.
最佳答案如果它可以解决你的问题,请试试这个： –总结@OverrIDe protected voID onDestroy() { super.onDestroy(); if (isFinishing()) { // do stuff } else { //It's an orIEntation change. } }以上是内存溢出为你收集整理的如何在Android上使用Mapsforge修复原生SIGABRT全部内容，希望文章能够帮你解决如何在Android上使用Mapsforge修复原生SIGABRT所遇到的程序开发问题。
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