我是 Amazon SNS 服务的新手,我今天才订阅开始试用它。我登录到 Mobile Hub 控制台,并创建了一个新项目。然后,我选择了适用于 Android 的 Push Notifications,并选择了 Build。
在说明中它说它应该像将 Build 步骤中提供的源项目导入 Android Studio 一样简单,然后单击 Debug app。
当我这样做时,我立即在 Android Studio 的事件日志中收到 NullPointerException: null 错误。我正在尝试将 MySampleApp 加载到模拟器上以测试推送通知的工作方式,但由于此错误,我什至无法运行该应用程序。
当我单击事件日志中的错误时,弹出窗口会显示以下详细信息。我不知道该怎么做,因为除了将项目导入 Android Studio 并单击调试应用程序之外,说明没有指明任何其他内容。
null
java.lang.NullPointerException
at com.android.tools.idea.run.AndroidSessionInfo.isEmbeddable(AndroidSessionInfo.java:62)
at com.android.tools.idea.run.AndroidRunConfigurationBase.getOldSessionTarget(AndroidRunConfigurationBase.java:307)
at com.android.tools.idea.run.AndroidRunConfigurationBase.getState(AndroidRunConfigurationBase.java:279)
at com.intellij.execution.runners.ExecutionEnvironment.getState(ExecutionEnvironment.java:201)
at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:58)
at com.intellij.execution.runners.GenericProgramRunner.execute(GenericProgramRunner.java:31)
at com.intellij.execution.runners.BaseProgramRunner.execute(BaseProgramRunner.java:53)
at com.intellij.execution.runners.GenericProgramRunner.execute(GenericProgramRunner.java:31)
at com.intellij.execution.ProgramRunnerUtil.executeConfiguration(ProgramRunnerUtil.java:94)
at com.intellij.execution.impl.ExecutionManagerImpl.start(ExecutionManagerImpl.java:396)
at com.intellij.execution.impl.ExecutionManagerImpl.access$400(ExecutionManagerImpl.java:61)
at com.intellij.execution.impl.ExecutionManagerImpl$5.run(ExecutionManagerImpl.java:384)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:351)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:332)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:706)
at java.awt.EventQueue$3.run(EventQueue.java:704)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:715)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:734)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:569)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:382)
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)