but at runtime, it crashes with a totally non-descriptive NPE:

throw with null exception

however, if I just add an explicit type declaration to the val, it works without a problem:

I'm guessing this has something to do with the findViewById signature change in Android O, but at least some kind of warning would be nice

what's the full stack trace?

it seems extremely unlikely that code is causing the problem

that's the only change that makes the difference between NPE and no NPE, and I've debugged, the view as returned by findViewById is not null

the NPE originates in that line

It should probably extend fragment lol

But its not a bad idea, any duplicate code you can extract out ,I say do it

This current declaration is not working for me

@katien uploaded a file:

here's the error I see when I try to update one of my views to extend the

BaseFragment

so, I know something's wrong with the way I've declared that class, but I am not sure how it should be done

You should take a deeper look at the type parameters youspecified in your base class.

Maybe you can use an observable pattern approach, using RxJava, the fragments can subscribe to check on events in the presenter and you can define a BaseFragment with a CompositeDisposable and add all the subscriptions there and dispose them when the onDestroy method is called, check out this example: https://gist.github.com/david3pabon/697278c22cd6c19343517ef7c51b5dd6

this is something I was hoping to add to my base fragment class actually

I have a lot of network stuff happening and was running into issues earlier where I'd get the response for a request after the view was detached

I'm still pretty new to RxJava though, so I need to study a bit more before I can implement that part

right now I just want to get all of my fragments extending a single class

thank you though, it sounds like I'm on the right track with the BaseFragment class

showed this to a friend and he suggested that the issue might be erased types?

@quock commented on @katien’s file : May be your basefragment not bounded with presenter.

not sure what you mean by this, I have it declared with the presenter in the type

Has anyone ever had this error in android studio and managed to fix it?

@bachhuberdesign commented on @Thiago’s file https://kotlinlang.slack.com/files/U8BCBJY2H/F8HUSSRAT/error_-_compile_clean_.kt: Under android in your Gradle build:

packagingOptions {
        exclude 'META-INF/rxjava.properties'
    }

Does anybody know an equivalent of java.time.Duration for API < 26?

@gildor commented on @Thiago’s file https://kotlinlang.slack.com/files/U8BCBJY2H/F8HUSSRAT/error_-_compile_clean_.kt: Should work https://github.com/ReactiveX/RxJava/issues/4445

@jw Are you superman? 😁