我的应用程序运行正常,运行时没有错误,但是当我开始新活动时,会抛出此错误。
null java.lang.NullPointerException at com.android.tools.idea.actions.NewAndroidComponentAction.actionPerformed(NewAndroidComponentAction.java:135) 在 com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:182) 在 com.intellij.openapi.actionSystem.impl.ActionMenuItem $ ActionTransmitter $ 1.run(ActionMenuItem.java:311) 在 com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:958) 在 com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:124) 在 com.intellij.openapi.actionSystem.impl.ActionMenuItem $ ActionTransmitter.actionPerformed(ActionMenuItem.java:281) 在 javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) 在 com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:109) 在 com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:513) 在 com.intellij.ui.plaf.beg.BegMenuItemUI.access $ 300(BegMenuItemUI.java:45) 在 com.intellij.ui.plaf.beg.BegMenuItemUI $ MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:533) 在java.awt.Component.processMouseEvent(Component.java:6535)at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)at java.awt.Component.processEvent(Component.java:6300)at java.awt.Container.processEvent(Container.java:2236)at java.awt.Component.dispatchEventImpl(Component.java:4891)at java.awt.Container.dispatchEventImpl(Container.java:2294)at java.awt.Component.dispatchEvent(Component.java:4713)at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888) 在 java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466) 在java.awt.Container.dispatchEventImpl(Container.java:2280)at java.awt.Window.dispatchEventImpl(Window.java:2750)at java.awt.Component.dispatchEvent(Component.java:4713)at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)at 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) 在 java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) 在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) 在java.awt.EventQueue.dispatchEvent(EventQueue.java:728)at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:866) 在 com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:650) 在 com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:381) 在 java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 在 java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 在 java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) 在 java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) 在 java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) 在java.awt.EventDispatchThread.run(EventDispatchThread.java:82)