How to pass ArrayList of ArrayLists between two activities

Question

Is there a way how to pass list of lists with my parcelable objects?

 public void listDataSms(ArrayList<MySmsLog> stringList) {
    Bundle bundle = new Bundle();
    bundle.putParcelableArrayList(NUMBER_LIST, stringList);
    Intent i = new Intent(this, MyCommonListActivity.class);
    i.putExtra(WHO_INT, SMS_LOG);
    i.putExtras(bundle);
    startActivityForResult(i, SMS_LOG);

i have this working but now i need to pass this somehow

public void listDataSmsAll(ArrayList<ArrayList<MySmsLog>> stringList)

You can serialize it into a JSON string and pass it with the bundle and deserialize it in the receiving Activity. You can also save it in the Application object. — SuperFrog, Jul 22 '15 at 22:48
If its array you use often then put it inside database and retrieve anywhere you want. — , Jul 22 '15 at 23:10

score 0 · Answer 1 · edited May 23 '17 at 11:44

0

One option could be letting your custom class implement Serializable interface and then you can pass object instances in intent extra using putExtra(Serializable..) variant of the Intent#putExtra() method.

PSEUDO code:

//to pass :
   intent.putExtra("MyClass", obj);  

// to retrieve object in second Activity
getIntent().getSerializableExtra("MyClass");

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

edited May 23 '17 at 11:44

Community

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answered Jul 22 '15 at 22:45

StephenG

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I know that way but i´m not using static fields anymore. Wanna keep it in object principle. – Blackess Jul 22 '15 at 22:47
This approach results in an unchecked cast warning when retrieving the object. – stevehs17 Aug 04 '17 at 20:41

How to pass ArrayList of ArrayLists between two activities

1 Answers1