查看错误日志，显示如下：
!ENTRY org.eclipse.osgi 2 0 2011-02-27 13:44:07.375
!MESSAGE While loading class "com.android.ide.eclipse.adt.internal.sdk.Sdk", thread "Thread[Worker-2,5,main]" timed out waiting (5000ms) for thread "Thread[org.eclipse.jdt.internal.ui.text.JavaReconciler,1,main]" to finish starting bundle "com.android.ide.eclipse.adt_0.9.9.v201009221407-60953 [744]". To avoid deadlock, thread "Thread[Worker-2,5,main]" is proceeding but "com.android.ide.eclipse.adt.internal.sdk.Sdk" may not be fully initialized.
!STACK 0
org.osgi.framework.BundleException: State change in progress for bundle "reference:file:plugins/com.android.ide.eclipse.adt_0.9.9.v201009221407-60953.jar" by thread "org.eclipse.jdt.internal.ui.text.JavaReconciler".
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at com.android.ide.eclipse.adt.internal.project.AndroidClasspathContainerInitializer.allocateAndroidContainer(Unknown Source)
at com.android.ide.eclipse.adt.internal.project.AndroidClasspathContainerInitializer.initialize(Unknown Source)
at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2707)
at org.eclipse.jdt.internal.core.JavaModelManager$11.run(JavaModelManager.java:2613)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975)
at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2653)
at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1845)
at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3463)
at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
... 24 more
Root exception:
org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at com.android.ide.eclipse.adt.internal.project.AndroidClasspathContainerInitializer.allocateAndroidContainer(Unknown Source)
at com.android.ide.eclipse.adt.internal.project.AndroidClasspathContainerInitializer.initialize(Unknown Source)
at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2707)
at org.eclipse.jdt.internal.core.JavaModelManager$11.run(JavaModelManager.java:2613)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975)
at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2653)
at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1845)
at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3463)
at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
找原因找了半天，原来纯碎是虚拟内存不足。修改eclipse的eclipse.init配置文件，增大虚拟内存。配置文件内容如下：
Java代码
- -startup
- plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
- --launcher.library
- plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503
- -product
- org.eclipse.epp.package.jee.product
- --launcher.defaultAction
- openFile
- --launcher.XXMaxPermSize
- 512M
- -showsplash
- org.eclipse.platform
- --launcher.XXMaxPermSize
- 512m
- --launcher.defaultAction
- openFile
- -vmargs
- -Dosgi.requiredJavaVersion=1.5
- -Xms80m
- -Xmx512m
这下好了，再也不自动关闭了。