ormlite with simplexml을 사용할 때의 문제

Question

현재 ormlite 및 simplexml을 사용 중입니다. xml 파일을 간단한 xml을 사용하여 ORMLite LazyForeignCollection 개체가있는 개체로 변환하려고하면 다음과 같은 예외가 발생합니다. 누군가 내가 이것을 어떻게 처리해야하는지 설명해 주실 수 있습니까? 다른 정보가 필요하면 알려주십시오. 이전에 ormlite에 문제가 없었습니다.

09-16 19:00:22.688: W/System.err(32274): java.lang.ClassNotFoundException: Didn't find class "com.j256.ormlite.dao.LazyForeignCollection" on path: . 
09-16 19:00:22.688: W/System.err(32274): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:64) 
09-16 19:00:22.688: W/System.err(32274): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
09-16 19:00:22.688: W/System.err(32274): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
09-16 19:00:22.688: W/System.err(3227d4): at android.app.LoadedApk$WarningContextClassLoader.loadClass(LoadedApk.java:431) 
09-16 19:00:22.688: W/System.err(32274): at org.simpleframework.xml.strategy.Loader.load(Loader.java:50) 
09-16 19:00:22.688: W/System.err(32274): at org.simpleframework.xml.strategy.TreeStrategy.readValue(TreeStrategy.java:163) 
09-16 19:00:22.688: W/ActivityThread(32274): ClassLoader.loadClass: The class loader returned by Thread.getContextClassLoader() may fail for processes that host multiple applications. You should explicitly specify a context class loader. For example: Thread.setContextClassLoader(getClass().getClassLoader()); 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.strategy.TreeStrategy.read(TreeStrategy.java:102) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Source.getOverride(Source.java:360) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Factory.getConversion(Factory.java:207) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Factory.getOverride(Factory.java:139) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.CollectionFactory.getInstance(CollectionFactory.java:87) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.CompositeList.read(CompositeList.java:116) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Composite.readVariable(Composite.java:623) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Composite.readInstance(Composite.java:573) 
09-16 19:00:22.698: W/System.err(32274): at org.simpleframework.xml.core.Composite.readUnion(Composite.java:549) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite.readElement(Composite.java:532) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite.readElements(Composite.java:445) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite.access$400(Composite.java:59) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite$Builder.read(Composite.java:1383) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite.read(Composite.java:201) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Composite.read(Composite.java:148) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Traverser.read(Traverser.java:92) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:625) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:606) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:584) 
09-16 19:00:22.708: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:543) 
09-16 19:00:22.718: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:521) 
09-16 19:00:22.718: W/System.err(32274): at org.simpleframework.xml.core.Persister.read(Persister.java:426) 
09-16 19:00:22.718: W/System.err(32274): at com.honeydewit.XMLMarshaller.generateListFromXml(XMLMarshaller.java:37) 
09-16 19:00:22.718: W/System.err(32274): at com.honeydewit.AttachmentProcessor.onCreate(AttachmentProcessor.java:46) 
09-16 19:00:22.718: W/System.err(32274): at android.app.Activity.performCreate(Activity.java:5372) 
09-16 19:00:22.718: W/System.err(32274): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104) 
09-16 19:00:22.718: W/System.err(32274): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257) 
09-16 19:00:22.718: W/System.err(32274): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349) 
09-16 19:00:22.718: W/System.err(32274): at android.app.ActivityThread.access$700(ActivityThread.java:159) 
09-16 19:00:22.728: W/System.err(32274): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316) 
09-16 19:00:22.728: W/System.err(32274): at android.os.Handler.dispatchMessage(Handler.java:99) 
09-16 19:00:22.728: W/System.err(32274): at android.os.Looper.loop(Looper.java:137) 
09-16 19:00:22.728: W/System.err(32274): at android.app.ActivityThread.main(ActivityThread.java:5419) 
09-16 19:00:22.728: W/System.err(32274): at java.lang.reflect.Method.invokeNative(Native Method) 
09-16 19:00:22.728: W/System.err(32274): at java.lang.reflect.Method.invoke(Method.java:525) 
09-16 19:00:22.738: W/System.err(32274): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187) 
09-16 19:00:22.738: W/System.err(32274): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003) 
09-16 19:00:22.738: W/System.err(32274): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

문제점을 파악했습니다. XMLMarshaller 클래스에서 클래스 로더를 수동으로 설정해야했습니다.

Android: "Class loader may fail for processes that host multiple applications"