IssueTracker

Currently there is no tests in R8 or studio infrastructure ensuring that desugared library works with pre-native-multi-dex.

The test has to run on SDK 20 or below (The test device should be SDK <= 20, besides the minAPI level) and use anything belonging to desugared library.

There are some details regarding pre-native-multi-dex and the use of secondary dex files, desugared library types cannot be used or referenced before the MultiDex have been installed.

Here is a working example:

import java.util.ArrayList;
import java.util.List;

import androidx.multidex.MultiDexApplication;

class Foo {
    public void delayed() {
        List<String> strings = new ArrayList<>();
        strings.add("asdf");
        strings.stream().forEach(System.out::println);
    }
}

public class App extends MultiDexApplication {
    @Override
    public void onCreate() {
        super.onCreate();
        new Foo().delayed();
    }
}

Here is a non working example:

import java.util.ArrayList;
import java.util.List;

import androidx.multidex.MultiDexApplication;

public class App extends MultiDexApplication {
    @Override
    public void onCreate() {
        super.onCreate();
        delayed();
    }

    public void delayed() {
        List<String> strings = new ArrayList<>();
        strings.add("asdf");
        strings.stream().forEach(System.out::println);
    }
}