rxjava, cannot resolve symbol ‘just’ in Intellij IDEA

Question

It works in:

Observable<String> observable = Observable.just("");

But cannot resolve symbol just in Observable.just("");

I'm sure I have imported the rxjava2.jar , and the Observable.just("") does well in Eclipse but not in IDEA.

Answer 1

File -> Project Structure -> Module -> + button click -> Library -> Maven

Searchbox -> Rx Java

by applying the stages to your project.

Maven Repos

Answer 2

I had the very same issue; I also saw similar behavior in the past, which drove me crazy for a long time, resulting in reinstalling the IDE.

Turns out, the problem was due to IntelliJ's idea.max.intellisense.filesize setting. I had set it to 100KB, which was smaller than Observable's size.

This leads to weird results in IDEA/IntelliJ (mostly to the IDE not being able to find code/sources that are in the classpath.)

Answer 3

when you wanna import observable you must select import io.reactivex.Observable; but you selected import android.database.Observable mistakenly.

i hope this hint helps you