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

我已更新到最新版本的 Android Studio (3.1)，但在尝试运行我的应用程序时出现以下错误.它在更新之前没有问题.我也卸载了Android Studio，从官网下载了最新版本.什么都没有改变.

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，我担心我弄坏了一些东西......我通过清理和重建项目来修复它(我按照建议禁用了即时运行之前在这里，但我想这没有必要，因为我在清理和重建项目后再次启用它并且工作得很好......).

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 -> 清理项目

构建 -> 重建项目

我不确定是否需要重建，我做了两个步骤并且效果很好，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.当我解决这里描述的问题时，我发现了另一个问题，当我点击运行时，apk 没有被创建，我用我在另一个线程上的回答解决了它:

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:

磁盘上不存在APK文件

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