I am having a problem where my build cannot find one of the androidx classes, specifically:
androidx.lifecycle.DefaultLifecycleObserver
Here are my gradle deps:
annotationProcessor "androidx.lifecycle:lifecycle-compiler:2.0.0"
implementation "androidx.lifecycle:lifecycle-runtime:2.0.0"
implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
I don't have any other problems getting androidx classes, just this one.
I have tried to invalidate caches in android studio and restart with no luck. Also a build clean as well as a gradle sync.
I verified here:
https://developer.android.com/jetpack/androidx/migrate
The mapping of that class from the support library to androidx:
android.arch.lifecycle.DefaultLifecycleObserver -> androidx.lifecycle.DefaultLifecycleObserver
Any ideas on why this is happening?
I think that's because you're missing one dependency:
implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
Get the latest version of lifecycle-common-java8 here
See the documentation:
If you use Java 8 Language, then observe events with DefaultLifecycleObserver. To include it you should add "androidx.lifecycle:lifecycle-common-java8:" to your build.gradle file.