How to pass an array list from one activity to another without starting it

Question

I have an activity which has an array list

ArrayList array = new ArrayList(); 

i want this array list to be pa

Answer 1

you can pass an intent to already running activity.. follow this http://www.helloandroid.com/tutorials/communicating-between-running-activities for that in the intent you can add an extra like this

Intent contactsIntent = new Intent(getApplicationContext(),
                ContactCards.class);
        contactsIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
                appWidgetId);
//Bundle containing the serialized list
        Bundle extraContacts = new Bundle();
//Putting the array list templist is the array list here

        extraContacts.putSerializable("CONTACT_KEY", tempList);
        extraContacts.putString("CALL_STRING", CALL_STRING);
        contactsIntent.putExtras(extraContacts);
        contactsIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(contactsIntent);

Answer 2

You can declare you ArrayList as a static one like this,

public static ArrayList<String> array = new ArrayList<String>(); 

By doing this you can access your ArrayList from anywhere by

activity_name.array;

where activity_name is the activity or class in which you declare the static ArrayList

Answer 3

use 1st activity

    Intent i=new Intent(ArraylistpassActivity.this,second.class);
   i.putStringArrayListExtra("key",arl);startActivity(i);

2nd activity:

arl=bundle.getStringArrayList("key");

Answer 4

Based on the fact that you mention a 'Save' button, I think you would rather save this data to SharedPreferences or an SQLiteDatabase.

I am unsure of what it would mean to 'save' some data to another Activity and not start it.

With your data in a persisted state, you should be able to access it from any one of your other Activity's, which is what is sounds like you are after.