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android – Passing ArrayList<MyObject> Between multiple Activities

Posted by: admin June 15, 2020 Leave a comment

Questions:

I am trying to pass an ArrayList of Objects between multiple activities in my application. Is it possible to do this using an Intent using the setData() method?

How to&Answers:

If you want to send an ArrayList of objects then your class must implement the Parcelable or Serializable interface .

See these good tutorials for sending custom object between Activities

http://androidideasblog.blogspot.in/2010/02/passing-list-of-objects-between.html

http://www.anddev.org/novice-tutorials-f8/simple-tutorial-passing-arraylist-across-activities-t9996.html

Answer:

Use below code for pass arraylist in intent.

Intent mIntent = new Intent(FirstActivity.this, SecondActivity.class);
mIntent.putParcelableArrayListExtra("Data", mArraylist);
startActivity(mIntent);

Use below code For get arraylist from Intent.

Bundle bdl = getIntent().getExtras();
mArraylist1 = bdl.getParcelableArrayList("Data");

Answer:

First you need to extend parcelable class in your Object class. Then you can pass it through intent via intent.putParcelableArrayListExtra("PASSING_DATA", data);

here data is arraylist of custom objects.

see Parcelable and Parcelable Tutorial for better undertanding

Answer:

If the objects implement Parcelable you can use the putParcelableArrayList method like this:

Bundle data = new Bundle();
data.putParcelableArrayList("myArrayList", myList);
Intent i = new Intent();
i.putExtra("data", data);

Hope that helps.

Answer:

yes, it is possible…
You need to implement Serializable class by your object class.

Answer:

You can make the arraylist static where you are defining it, and only pass the position to the next activity