How to send ArrayList<object> from one activity to second activity?

I want to pass "ArrayList objArrayList" from one activity to second activity and want to receive there. I am creating a simple class in that there are four arraylist. I m creating object of that class and calling method of that class by passing parameters to be added in arraylist. After that I m adding that class object in objArrayList. 开发者_如何转开发HOw can I pass objArrayList from one activity to second activity and receive it there?

Thanks, Vishakha.

First Context (can be Activity/Service etc)

You have a few options:

1) Use the Bundle from the Intent:

Intent mIntent = new Intent(this, Example.class);
Bundle extras = mIntent.getExtras();
extras.putString(key, value);  

2) Create a new Bundle

Intent mIntent = new Intent(this, Example.class);
Bundle mBundle = new Bundle();
mBundle.extras.putString(key, value);
mIntent.putExtras(mBundle);

3) Use the putExtra() shortcut method of the Intent

Intent mIntent = new Intent(this, Example.class);
mIntent.putExtra(key, value);

New Context (can be Activity/Service etc)

Intent myIntent = getIntent(); // this getter is just for example purpose, can differ
if (myIntent !=null && myIntent.getExtras()!=null)
     String value = myIntent.getExtras().getString(key);
}

NOTE: Bundles have "get" and "put" methods for all the primitive types, Parcelables, and Serializables. I just used Strings for demonstrational purposes.

Your Arraylist class must be Parcelable or Serializable. So you should subclass it to add these functionalities as I think they miss from the original implementation.

Then look into these other questions they will help you. Serialization issue with SortedSet, Arrays, an Serializable

Use the standard Intent mechanism. Put your list to extras of intent and pass it.