How to pass an object from one activity to another on Android

Question

I am trying to work on sending an object of my customer class from one Activity and display it in another Activity.

The code for t

Answer 1

Use gson to convert your object to JSON and pass it through intent. In the new Activity convert the JSON to an object.

In your build.gradle, add this to your dependencies

implementation 'com.google.code.gson:gson:2.8.4'

In your Activity, convert the object to json-string:

Gson gson = new Gson();
String myJson = gson.toJson(vp);
intent.putExtra("myjson", myjson);

In your receiving Activity, convert the json-string back to the original object:

Gson gson = new Gson();
YourObject ob = gson.fromJson(getIntent().getStringExtra("myjson"), YourObject.class);

For Kotlin it's quite the same

Pass the data

val gson = Gson()
val intent = Intent(this, YourActivity::class.java)
intent.putExtra("identifier", gson.toJson(your_object))
startActivity(intent)

Receive the data

val gson = Gson()
val yourObject = gson.fromJson(intent.getStringExtra("identifier"), YourObject::class.java)