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Parcel : Parcelables
The Parcelable protocol provides an extremely efficient (but low-level) protocol for objects to
write and read themselves from Parcels. You can use the direct methods
writeParcelable(Parcelable, int) and readParcelable(ClassLoader) or writeParcelableArray(T[],
int) and readParcelableArray(ClassLoader) to write or read. These methods write both the class
type and its data to the Parcel, allowing that class to be reconstructed from the appropriate
class loader when later reading.
There are also some methods that provide a more efficient way to work with Parcelables:
writeTypedArray(T[], int), writeTypedList(List), readTypedArray(T[], Parcelable.Creator) and
readTypedList(List, Parcelable.Creator). These methods do not write the class information of
the original object: instead, the caller of the read function must know what type to expect and
pass in the appropriate Parcelable.Creator instead to properly construct the new object and
read its data. (To more efficient write and read a single Parceable object, you can directly call
Parcelable.writeToParcel and Parcelable.Creator.createFromParcel yourself.)
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