OSGI包采用Android API正显示出＆QUOT; java.lang.NoClassDefFoundError的＆QUOT;错误 [英] OSGI Bundle using Android API is showing "java.lang.NoClassDefFoundError" error
问题描述
在我的Eclipse插件的项目，我想使用Android API。
In my eclipse plugin project, I am trying to use the Android API.
我做的第一件事就是的android.jar 添加到构建路径。然后，我试图同时显示在控制台上的消息（使用的System.out.println（）），并在LogCat中（使用的Android / util.Log ）。我显示我的的start（）的包激活器类的方法，这些消息。
The first thing I did is to add Android.jar to the build path. Then, I attempted to show a message on both the console (using System.out.println()), and on the LogCat (using android/util.Log). I am showing these messages in my start() method of the Bundle Activator class.
我还远销，在我的 MANIFEST.MF 文件导入 android.util 包。
I also exported and imported the android.util package in my MANIFEST.MF file.
当我运行包，我看到我的控制台上的第一条消息，但是在那之后，我收到以下错误：
When I run the bundle, I see the first message on my console, but after that, I get the following errors:
!ENTRY OSGI_Android_Bundle 4 0 2013-08-11 07:54:56.008
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: Exception in osgi_android_bundle.Activator.start() of bundle OSGI_Android_Bundle.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1177)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Caused by: java.lang.NoClassDefFoundError: android/util/Log
at osgi_android_bundle.Activator.start(Activator.java:27)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 12 more
Caused by: java.lang.ClassNotFoundException: android.util.Log
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 16 more
Root exception:
java.lang.NoClassDefFoundError: android/util/Log
at osgi_android_bundle.Activator.start(Activator.java:27)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1177)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Caused by: java.lang.ClassNotFoundException: android.util.Log
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 16 more
我试图寻找类似的情况，但我发现他们没有答案。例如<一个href=\"http://stackoverflow.com/questions/15330037/osgi-on-android-noclassdeffounderror-android-util-log\">here在stackoveflow。
I tried to search for similar situations but I found them unanswered. For example here at stackoveflow.
能有人帮忙吗？下面是我的code：
Can some one help? Below is my code:
package osgi_android_bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import android.util.Log;
public class Activator implements BundleActivator {
private static BundleContext context;
static BundleContext getContext() {
return context;
}
/*
* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
*/
public void start(BundleContext bundleContext) throws Exception {
Activator.context = bundleContext;
System.out.println("Hello World. I am the OSGI_Android_Bundle!");
Log.d("Zaid Log", "Hello World. I am the OSGI_Android_Bundle!!");
}
/*
* (non-Javadoc)
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
*/
public void stop(BundleContext bundleContext) throws Exception {
Activator.context = null;
System.out.println("Goodbye World. I am the OSGI_Android_Bundle!");
Log.d("Zaid Log", "Goodbye World. I am the OSGI_Android_Bundle!!");
}
}
也是我的MANIFEST.MF：
and also my MANIFEST.MF:
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: OSGI_Android_Bundle
Bundle-SymbolicName: OSGI_Android_Bundle
Bundle-Version: 1.0.0.qualifier
Bundle-Activator: osgi_android_bundle.Activator
Import-Package: org.osgi.framework;version="1.3.0", android.util
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
Export-Package: android.util
注意：当我开始在我的Android应用此包（其中有嵌入式Knopflerfish平台），它不显示任何东西。所以我想我应该先解决上面的错误，才能看到日志中的消息。
Note: When I start this bundle in my Android app (which has Knopflerfish platform embedded), it does not show anything at all. So I thought I should fix the above errors first, in order to see the message in the log.
推荐答案
您可以参考我的主题中的一章启用非图形化的Android包。即使是针对Knopflerfish，这些变化应适用于其他OSGi实现，只要你可以修改它。
You can refer to the chapter "Enable non-graphical android bundle" in my topic. Even if it is aimed at Knopflerfish, the changes should be applicable to another OSGi implementation as long as you can modify it.
<一个href=\"http://stackoverflow.com/questions/18587855/full-android-support-for-osgi-bundles-knopflerfish\">Full为OSGi包支持Android（Knopflerfish）
与此同时，我不介意我演讲的题目一定的帮助。
At the same time, I don't mind some help on my topic.
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