CookieSyncManager::createInstance() needs to be called before CookieSyncManager::getInstance()

Question

This error message is pretty clear:

CookieSyncManager::createInstance() needs to be called before CookieSyncManager::getInstance()

Answer 1

I followed the official documentation in one of recent apps and CookieSyncMasnager is working just fine...

I have the following:

onCreate()
    CookieSyncManager.createInstance(this);

onResume()
    CookieSyncManager.getInstance().startSync();

onPause()
    CookieSyncManager.getInstance().stopSync();

I am using the activity context in the createInstance(). You don't mention which context you're using?

You also don't mention doing a CookieSyncManager.getInstance().stopSync() in onPause() (or similar). So perhaps for a resume you are calling CookieSyncManager.getInstance().startSync() twice without an intervening stop?