Android studio is failing to suggest imports for known classes, like Date and List and so on. Just warns "Cannot resolve symbol"
Android Studio 2.2.3
Build #AI-145.3537739, built on December 2, 2016
JRE: 1.8.0_76-release-b03 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Note: Auto import is enabled, and there are no excluded classes from it, manually adding the import statement works.