Error: "... only supported starting with Android N... "

Question

Error: "... only supported starting with Android N... "

Closed this issue 5 years ago · 4 comments

When trying to compile I get this error:

"Default interface methods are only supported starting with Android N (--min-api 24): io.reactivex.CompletableObserver com.uber.rxdogtag.ObserverHandler.handle(io.reactivex.Completable, io.reactivex.CompletableObserver)"

Is this expected?

My setup:
minSdkVersion 21
targetSdkVersion 29
multiDexEnabled true

Answer 1 · 2019-12-21T04:57:33.000Z

RxDogTag is built targeting Java 8. If your minSdk on Android is lower than 24, you must use D8 (which can desugar default interface methods) and target/source compatibility 8.

Answer 2 · 2021-01-26T08:12:50.000Z

You probably need to highlight this in README. minSdkVersion 21 is very widespread.

Answer 3 · 2021-01-26T08:26:53.000Z

I additionally have:

Invoke-customs are only supported starting with Android O (--min-api 26)

Answer 4 · 2021-01-26T08:29:50.000Z

RxJava itself also requires java 8 now. D8 has existed for awhile now on Android projects needing to support older minSdks. The ecosystem has moved on, time to catch up.