Android Studio 3.1-插件Android支持中的异常 [英] Android Studio 3.1 - Exception in plugin Android Support

问题描述

我已经更新到最新版本的Android Studio(3.1)，并且在尝试运行我的应用程序时出现以下错误.更新之前，它没有任何问题.我还卸载了Android Studio，并从官方网站下载了最新版本.什么都没改变.

I have updated to the latest version of Android Studio (3.1) and I get the following error when I try to run my app. It was working with no problems before the update. I have also uninstalled Android Studio and downloaded the latest version from the official website. Nothing has changed.

null java.lang.NullPointerException
        at com.android.tools.idea.run.tasks.InstantRunNotificationTask.<init>(InstantRunNotificationTask.java:64)
        at com.android.tools.idea.fd.InstantRunBuildAnalyzer.getNotificationTask(InstantRunBuildAnalyzer.java:188)
        at com.android.tools.idea.run.AndroidLaunchTasksProvider.getTasks(AndroidLaunchTasksProvider.java:122)
        at com.android.tools.idea.run.LaunchTaskRunner.run(LaunchTaskRunner.java:102)
        at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:713)
        at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)
        at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:543)
        at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:488)
        at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:94)
        at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)
        at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:165)
        at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:315)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

推荐答案

我遇到了完全相同的问题，我担心会损坏某些东西...我通过清理和重建项目来修复它(我已按照建议禁用即时运行在此之前，但是我想那是没有必要的，因为我在清理和重建项目后再次启用了它，并且工作得很好...).

I faced the exact same problem, I was afraid I broke something... I fixed it by cleaning and rebuilding the project (I had disabled instant run as suggested here before but I guess that was not necessary as I enabled it again after cleaning and rebuilding the project and worked just fine...).

构建->清洁项目

构建->重建项目

我不确定是否需要重建，我完成了两个步骤，都工作正常，也许只是清理项目就足够了.

I am not sure if rebuilding would be necessary, I did both steps and it worked fine, maybe just cleaning the project would have been sufficient.

希望有帮助！

编辑

很好，还有一件事.当我解决了此处描述的问题时，我发现了另一个问题，当我单击运行时，未创建apk，而是在另一个线程上用我的答案解决了该问题:

Nice, one more thing. When I solved the problem depicted here I found another problem, when I clicked run the apk was not being created and I solved it with my answer on that other thread:

APK文件在磁盘上不存在

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