Asking about Json serialization

Question

I know that when a class implements the serializable interface then the serialization on a java object will be done, this object will be become series of bytes. If an app communicates with a Webservice in Json format by using OkHttp, Gson. why does this app that has certain class have to implement the serializable interface?

Answer 1

You are getting this wrong!

OkHttp, Gson does not need class to be serialized. But if you want to pass that model (Bean or Pojo what you say) to Bundle. Then you have to make it Serializable.

Like you have class A. And you want pass this to next activity.

 A model = new A();
 Intent i = new Intent(MainActivity.this, ReceiverActivity.class);
 i.putExtra("modelA", model);

In ReceiverActivity onCreate() you write

 Model model = (Model) getIntent().getSerializableExtra("modelA");

If you don't extend Serializable to your class then you can not use this method even.

By the way you should use Parcelable instead of Serializable. That will make your model class lengthy but its performance is better than Serializable. See this answer for implementation.