usual java reflection to see overlay apk and see the overlayed apk

reflection thingy

for (PackageInfo pi : context.getPackageManager().getInstalledPackages(0)) {
    try {
        Class piClass = pi.getClass();
        Field overlaytargetField = piClass.getDeclaredField("overlayTarget");
        overlaytargetField.setAccessible(true);
        String target = overlaytargetField.get(pi).toString();

        if (target != null) {
            Log.d("lmao", pi.packageName + " is overlaying: " + target);
        }

    } catch (Exception e1) {
        Log.e("lmao", "error", e1);
    }
}