Sample of new AndroidX Concurrent Futures 1.0.0

CallbackToFutureAdapter.kt

fun asyncOperation(): ListenableFuture<Foo> {
    return CallbackToFutureAdapter.getFuture { completer: CallbackToFutureAdapter.Resolver<Foo> ->
        asyncApi.load(object : OnResult {

          override fun onSuccess(foo: Foo) {
              completer.set(foo);
          }

          override fun onError(failure: Failure) {
              completer.setException(failure.exception);
          }
        })
    }
}