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我正在开发一个插件，以使用Intellij扩展android studio的新项目向导。多个类加载器加载的相同类 - Intellij插件
当我尝试调用AndroidSdkUtils.isAndroidSdkAvailable（）我得到断言：空，粘贴了以下错误，
null
java.lang.AssertionError
at com.intellij.openapi.projectRoots.SdkType.findInstance(SdkType.java:207)
at org.jetbrains.android.sdk.AndroidSdkType.getInstance(AndroidSdkType.java:231)
at org.jetbrains.android.sdk.AndroidSdkUtils.getAllAndroidSdks(AndroidSdkUtils.java:462)
at org.jetbrains.android.sdk.AndroidSdkUtils.getAndroidSdkPathsFromExistingPlatforms(AndroidSdkUtils.java:443)
at org.jetbrains.android.sdk.AndroidSdkUtils.tryToChooseAndroidSdk(AndroidSdkUtils.java:853)
at com.android.tools.idea.npw.ConfigureAndroidProjectPath.putSdkDependentParams(ConfigureAndroidProjectPath.java:97)
at com.android.tools.idea.npw.ConfigureAndroidProjectPath.init(ConfigureAndroidProjectPath.java:59)
at com.android.tools.idea.wizard.dynamic.DynamicWizardPath.attachToWizard(DynamicWizardPath.java:98)
at com.android.tools.idea.wizard.dynamic.DynamicWizard.addPath(DynamicWizard.java:242)
at com.android.tools.idea.npw.NewProjectWizardDynamic.addPaths(NewProjectWizardDynamic.java:84)
at tru.NewModuleWizardDynamicExtension.init(NewModuleWizardDynamicExtension.java:27)
at NewProAction.actionPerformed(NewProAction.java:30)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:182)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter$1.run(ActionMenuItem.java:311)
at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:958)
at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:124)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:281)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:109)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at com.apple.laf.ScreenMenuItemCheckbox.itemStateChanged(ScreenMenuItemCheckbox.java:193)
at java.awt.CheckboxMenuItem.processItemEvent(CheckboxMenuItem.java:389)
at java.awt.CheckboxMenuItem.processEvent(CheckboxMenuItem.java:357)
at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:351)
at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:339)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:761)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:866)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:654)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:381)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
这是因为findInstance方法试图与里面的sdkType类的一个比较AndroidSdkType.Class一个for循环，类实际上是相同的，但由两个不同的加载器加载，一个来自（org.jetbrains.android）和其他来自本地加载器（com.sample.sample）
如何解决此问题？
由于这个类加载器的问题，我也经常得到classcastexception。所以，当我尝试使用不同的方式来开发插件时，我遇到了这个类加载器问题。
