我在我的gradle项目中添加volley.jar作为库时出现问题。
我克隆了凌空，通过ant jar创建了一个jar文件，并将此jar文件包含在ProjectName/libs中。
在build.gradle中，我添加了
compile fileTree(dir: 'libs', include: '*.jar')
当我右键单击volley.jar并选择“Add As Library”时，它会引发异常：
Exception in plugin Android Support
null
java.lang.NullPointerException
at com.android.tools.idea.actions.CreateLibraryFromFilesAction$CreateGradleLibraryFromFilesDialog.<init>(CreateLibraryFromFilesAction.java:152)
at com.android.tools.idea.actions.CreateLibraryFromFilesAction.actionPerformed(CreateLibraryFromFilesAction.java:91)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:162)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter$1.run(ActionMenuItem.java:261)
at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:916)
at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:124)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:231)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:104)
at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:512)
at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:44)
at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:532)
at java.awt.Component.processMouseEvent(Component.java:6414)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3275)
at java.awt.Component.processEvent(Component.java:6179)
at java.awt.Container.processEvent(Container.java:2084)
at java.awt.Component.dispatchEventImpl(Component.java:4776)
at java.awt.Container.dispatchEventImpl(Container.java:2142)
at java.awt.Component.dispatchEvent(Component.java:4604)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4279)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4209)
at java.awt.Container.dispatchEventImpl(Container.java:2128)
at java.awt.Window.dispatchEventImpl(Window.java:2492)
at java.awt.Component.dispatchEvent(Component.java:4604)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:690)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:696)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:520)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:335)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
我觉得它与Android支持库有关
compile 'com.android.support:support-v4:18.0.+
包含在我的gradle文件中。请帮我看看我做错了包括凌空图书馆。
答案 0 :(得分：0)
我最近在项目中遇到了同样的问题。 您可以通过单击“使用Gradle文件同步项目”来解决此问题。