在 Android Studio 中生成 Google App Engine 后端的问题

Question

我无法在 Android Studio 中使用后端生成功能。我关注了 this 博客文章，试图为我的应用程序设置后端，但是我收到以下 IDE 错误：

插件 Maven 集成中的异常

Argument 0 for @NotNull parameter of com/intellij/util/containers/ContainerUtil.map must not be null: Argument 0 for @NotNull parameter of com/intellij/util/containers/ContainerUtil.map must not be null
java.lang.IllegalArgumentException: Argument 0 for @NotNull parameter of com/intellij/util/containers/ContainerUtil.map must not be null
    at com.intellij.util.containers.ContainerUtil.map(ContainerUtil.java)
    at org.jetbrains.idea.maven.utils.MavenUtil.collectFiles(MavenUtil.java:247)
    at org.jetbrains.idea.maven.wizards.MavenProjectBuilder.commit(MavenProjectBuilder.java:129)
    at com.intellij.projectImport.ProjectImportBuilder.commit(ProjectImportBuilder.java:59)
    at com.google.gct.intellij.endpoints.externalbuilder.MavenBackendGeneratorHelper.addMavenFunctionality(MavenBackendGeneratorHelper.java:216)
    at com.google.gct.intellij.endpoints.externalbuilder.ui.GenerateMavenBackend.actionPerformed(GenerateMavenBackend.java:115)
    at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:162)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter$1.run(ActionMenuItem.java:260)
    at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:892)
    at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:114)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:230)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    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:6505)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:688)
    at java.awt.EventQueue$3.run(EventQueue.java:686)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:702)
    at java.awt.EventQueue$4.run(EventQueue.java:700)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:699)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:686)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:510)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:339)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

流程完成后，我只生成了 -AppEngine 模块，没有 -endpoints 模块。

我确定 Maven 已在我的机器上正确设置，我检查了 this 问题，该问题也抱怨无法生成后端。

这个问题有解决办法吗？

Answer 1

您应该需要将 Google API 包安装到您的工作区中。然后，只有您可以访问相同的内容。否则，它只会显示错误。

Answer 2

[windows 8] 获取 0.4.0 Android Studio， 新项目， 单击以选择 工具>谷歌云工具>生成应用引擎

提供项目编号和项目 ID 和 API 密钥，来自 https://cloud.google.com/console#/project 看来你已经知道了

这将生成 -AppEngine 和 -端点

在左侧项目浏览器中选择-endpoints， 然后工具>谷歌云工具>生成客户端库 （这使得 .war 与 app-engine 一起部署，因此 app-engine 代码可以处理端点代码）

点击最右上角垂直书写的“Maven Projects”， 点击插件>appengine，点击appengine:update

这将部署 appengine。

（2014 年 1 月 7 日）您必须返回控制台并重新选择正确的版本，以便应用注册到端点服务。

到这里： https://cloud.google.com/console#/project，然后点击AppEngine，再点击版本，再点击最新版本，再点击设为默认

Answer 3

新的解决方案是转到文件>新模块>更多模块>AppEngine Java Endpoints Module

这是一个 Google I/O 视频，详细介绍了设置步骤： https://www.youtube.com/watch?v=KBhOkfbbZLk

Google 的 Cloud Tools 文档中也有此链接： https://cloud.google.com/mobile/app_engine/add_module