Using both Parcelable class and Serializable in one class

Question

I have class Data with some properties, where one of the property is a class which implements Serializable and another one implements Parcelable, other properties is String.

And I want to make this Class (Data) implement Serializable.

Is there any problems during serialization of Data class with property which implements Parcelable, but not implements Serializable?

If you ever need to serialize a `Parcelable`, you may be able to do this by converting the `Parcelable` property to bytes first (more on this [here](https://stackoverflow.com/questions/18000093/how-to-marshall-and-unmarshall-a-parcelable-to-a-byte-array-with-help-of-parcel)) in `writeObject` of the `Data` class, while doing the opposite operation in `readObject`. Another option according to [the documentation on `Serializable`](https://developer.android.com/reference/java/io/Serializable) seems to be to have a no-arg constructor for the `Parcelable` property. — gthanop, Jul 14 '21 at 18:42

score 1 · Accepted Answer · answered Jul 14 '21 at 18:05

There are no issues as you don't introduce any new properties for the Parcelable implementation. Standard implementation merely provides you some helper methods describeContents and writeToParcel and a static CREATOR object, which will not be part of the Serialized content.

example:

 class MyParcelable private constructor(`in`: Parcel) : Parcelable {
     private val mData: Int = `in`.readInt()

     override fun describeContents(): Int {
         return 0
     }

     override fun writeToParcel(out: Parcel, flags: Int) {
         out.writeInt(mData)
     }

     companion object {
         val CREATOR: Parcelable.Creator<MyParcelable?>
                 = object : Parcelable.Creator<MyParcelable?> {
             override fun createFromParcel(`in`: Parcel): MyParcelable? {
                 return MyParcelable(`in`)
             }

             override fun newArray(size: Int): Array<MyParcelable?> {
                 return arrayOfNulls(size)
             }
         }
     }
 }

Thanks! My question is can I make this class MyParcelable implements both : Parcelable, Serializable ? — researcher, Jul 21 '21 at 12:36

Using both Parcelable class and Serializable in one class

1 Answers1