Android Studio：IDE 在向现有项目添加新 activity 时显示致命错误
Android Studio : IDE shows fatal error when adding a new activity to the existing project
工作室版本：2.3.1
GradlePlugin:2.3.1版本
Gradle:3.3 的版本
Java 的版本：OpenJDK Platform8 版本 8.0.1120.6
OS: windows 10
重现步骤：
1. 在 android 工作室中将 https://github.com/udacity/ud851-Exercises/tree/student/Lesson04a-Starting-New-Activities/T04a.01-Exercise-AddNewActivity 作为现有项目打开。
当添加一个新的 activity 时，有时我会得到 nullpointerexception 并且没有任何视觉效果，有时我会得到一个创建新的 activity 向导，点击完成按钮后，冻结并且我得到 InvalidRefrenceException。
我尝试添加新的 activity 几次，每次尝试后我都得到 nullPointerException。然而，在最后一次尝试中，向导出现了，但在单击完成按钮后，它冻结了，我得到了 IllegalStateException。
另外打开AndroidSDK管理器，SDK工具等选项卡，所有的sdk版本以及底部的显示详情框都无法点击
这是日志文本：
null
java.lang.NullPointerException
at com.android.tools.idea.actions.NewAndroidComponentAction.actionPerformed(NewAndroidComponentAction.java:121)
at com.intellij.openapi.actionSystem.ex.ActionUtil.run(ActionUtil.java:197)
at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88)
at com.intellij.openapi.application.TransactionGuardImpl.submitTransactionAndWait(TransactionGuardImpl.java:156)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:211)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed(ActionMenuItem.java:304)
at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:905)
at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:124)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:284)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed[=13=](ActionMenuItem.java:112)
at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88)
at com.intellij.openapi.application.TransactionGuardImpl.access0(TransactionGuardImpl.java:40)
at com.intellij.openapi.application.TransactionGuardImpl.run(TransactionGuardImpl.java:113)
at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:123)
at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:109)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:112)
at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:513)
at com.intellij.ui.plaf.beg.BegMenuItemUI.access0(BegMenuItemUI.java:45)
at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:533)
at java.awt.Component.processMouseEvent(Component.java:6533)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6298)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4889)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2746)
at java.awt.Component.dispatchEvent(Component.java:4711)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access0(EventQueue.java:97)
at java.awt.EventQueue.run(EventQueue.java:709)
at java.awt.EventQueue.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
at java.awt.EventQueue.run(EventQueue.java:731)
at java.awt.EventQueue.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:795)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:627)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:387)
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)
这也发生在我身上，但仅在从 activity 列表创建 activity 时发生。如果您从图库中创建新的 activity，则不会发生这种情况。
您可以在此处找到画廊：文件->新建->Activity->画廊
https://i.stack.imgur.com/Fm4a3.jpg
工作室版本：2.3.1 GradlePlugin:2.3.1版本 Gradle:3.3 的版本 Java 的版本：OpenJDK Platform8 版本 8.0.1120.6 OS: windows 10
重现步骤： 1. 在 android 工作室中将 https://github.com/udacity/ud851-Exercises/tree/student/Lesson04a-Starting-New-Activities/T04a.01-Exercise-AddNewActivity 作为现有项目打开。
当添加一个新的 activity 时，有时我会得到 nullpointerexception 并且没有任何视觉效果，有时我会得到一个创建新的 activity 向导，点击完成按钮后，冻结并且我得到 InvalidRefrenceException。
我尝试添加新的 activity 几次，每次尝试后我都得到 nullPointerException。然而，在最后一次尝试中，向导出现了，但在单击完成按钮后，它冻结了，我得到了 IllegalStateException。
另外打开AndroidSDK管理器，SDK工具等选项卡，所有的sdk版本以及底部的显示详情框都无法点击
这是日志文本：
null java.lang.NullPointerException at com.android.tools.idea.actions.NewAndroidComponentAction.actionPerformed(NewAndroidComponentAction.java:121) at com.intellij.openapi.actionSystem.ex.ActionUtil.run(ActionUtil.java:197) at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88) at com.intellij.openapi.application.TransactionGuardImpl.submitTransactionAndWait(TransactionGuardImpl.java:156) at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:211) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed(ActionMenuItem.java:304) at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:905) at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:124) at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:284) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed[=13=](ActionMenuItem.java:112) at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88) at com.intellij.openapi.application.TransactionGuardImpl.access0(TransactionGuardImpl.java:40) at com.intellij.openapi.application.TransactionGuardImpl.run(TransactionGuardImpl.java:113) at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:123) at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:109) at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:112) at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:513) at com.intellij.ui.plaf.beg.BegMenuItemUI.access0(BegMenuItemUI.java:45) at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:533) at java.awt.Component.processMouseEvent(Component.java:6533) at javax.swing.JComponent.processMouseEvent(JComponent.java:3324) at java.awt.Component.processEvent(Component.java:6298) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4889) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466) at java.awt.Container.dispatchEventImpl(Container.java:2280) at java.awt.Window.dispatchEventImpl(Window.java:2746) at java.awt.Component.dispatchEvent(Component.java:4711) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access0(EventQueue.java:97) at java.awt.EventQueue.run(EventQueue.java:709) at java.awt.EventQueue.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90) at java.awt.EventQueue.run(EventQueue.java:731) at java.awt.EventQueue.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:795) at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:627) at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:387) 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)
这也发生在我身上，但仅在从 activity 列表创建 activity 时发生。如果您从图库中创建新的 activity，则不会发生这种情况。 您可以在此处找到画廊：文件->新建->Activity->画廊
https://i.stack.imgur.com/Fm4a3.jpg