Going through android development at the moment and by mistake I overrode onCreate(Bundle, PersistableBundle) instead of simply onCreate(Bundle) and so the activity wouldn't launch. I fixed it by using the correct overload, which was rather difficult to find but that's a different matter.
My question is this: Why didn't that work? Why does overriding onCreate(Bundle, PeristableBundle) not work, i.e. why isn't it called and why does overriding the other overload work?
onCreate(Bundle) is the usual method you will implement always.
onCreate(Bundle, PersistableBundle) gets called only if you set the persistableMode, as documentation says:
void onCreate (Bundle savedInstanceState, PersistableBundle persistentState)Same as onCreate(android.os.Bundle) but called for those activities created with the attribute persistableMode set to persistAcrossReboots.
More about persistableMode: https://developer.android.com/reference/android/R.attr.html#persistableMode