Parcelable OR Serializable : Which is better option to communicate between two activities?

Question

I have bunch of data like Model classes, Array list & some other data type based on requirements.

Now, I am planning to start flexible & light weight way to communicate with activities & fragments with heavy data which should not be affect to UI.

Answer 1

Parcelable is better because in Serializable java reflection is used which is a slow process. Serializable creates a lot of temporary objects and thus creates a lot of garbage collectable variables. Whereas in Parcelabe we will be defining explicitly the variables and methods, this takes up a bit of time but it is worth it.