1:47:27 Plugin Error
        Problems found loading plugins:

        Plugin "Google Analytics Uploader" was not loaded: required plugin "Android Support" is disabled.
        Plugin "SDK Updater" was not loaded: required plugin "Android Support" is disabled.
        Plugin "Android NDK Support" was not loaded: required plugin "Android Support" is disabled.
        Plugin "Google App Indexing" was not loaded: required plugin "Android Support" is disabled.
        Plugin "Google Cloud Tools For Android Studio" was not loaded: required plugin "Android Support" is disabled.
        Plugin "Google Cloud Testing" was not loaded: required plugin "Android Support" is disabled.
        Plugin "Google Services" was not loaded: required plugin "Android Support" is disabled.
        Disable not loaded plugins
        Enable Android Support
        Open plugin manager
1:47:58 Error Loading Project: Cannot load 3 facets Details...
1:48:15 Plugins Suggestion
        Unknown features (Run Configuration[AndroidRunConfigurationType], Facet[android, android-gradle]) covered by disabled plugin detected.
        Enable plugins...
        Ignore Unknown Features
1:49:32 CalledFromWrongThreadException
        Access is allowed from event dispatch thread only.
        Details: EventQueue.isDispatchThread()=false
        isDispatchThread()=false
        Toolkit.getEventQueue()=com.intellij.ide.IdeEventQueue@61663e4a
        Current thread: Thread[ApplicationImpl pooled thread 12,4,main] 2035004982
        SystemEventQueueThread: Thread[AWT-EventQueue-0 1.5#AI-141.2456560, eap:false,6,main] 349142291
        "AWT-EventQueue-0 1.5#AI-141.2456560, eap:false" prio=0 tid=0x0 nid=0x0 waiting on condition
        java.lang.Thread.State: WAITING
        on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@57d1d7e
        at sun.misc.Unsafe.park(Native Method)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at java.awt.EventQueue.getNextEvent(EventQueue.java:554)
        at com.intellij.ide.IdeEventQueue.pumpEventsForHierarchy(IdeEventQueue.java:802)
        at com.intellij.openapi.progress.util.ProgressWindow.startBlock... (show balloon)

点击File--Invalidate Caches/Restart...后报错：

-----------------解决方法-----------------------------
被禁用了

File > Settings > Plugins -> type "Android" on the search box

 You‘ll notice that "Android Support" Plugin is unchecked. Uncheck the "Google Cloud Testing" plugin and then check the "Android Support" plugin. Hit the Apply button and then click OK. The IDE will ask you to restart to bring the changes into effect. Hit OK and when the IDE restarts, your code should be working fine.

取消勾选，再重新勾选，点击apply应用，点击oK确定。弹出一个框询问是否重启，点restart.重启后即可解决这个问题。

关于点击Invalidate Caches/Restart禁止插件后，重新加载--Android Studio