Sending arrays with Intent.putExtra


Question

I have an array of integers in the activity A:

int array[] = {1,2,3};

And I want to send that variable to the activity B, so I create a new intent and use the putExtra method:

Intent i = new Intent(A.this, B.class);
i.putExtra("numbers", array);
startActivity(i);

In the activity B I get the info:

Bundle extras = getIntent().getExtras();
int arrayB = extras.getInt("numbers");

But this is not really sending the array, I just get the value '0' on the arrayB. I've been looking for some examples but I didn't found anything so.

1
67
3/16/2017 6:37:20 AM

Accepted Answer

You are setting the extra with an array. You are then trying to get a single int.

Your code should be:

int[] arrayB = extras.getIntArray("numbers");
85
10/3/2010 2:22:23 AM

This code sends array of integer values

Initialize array List

List<Integer> test = new ArrayList<Integer>();

Add values to array List

test.add(1);
test.add(2);
test.add(3);
Intent intent=new Intent(this, targetActivty.class);

Send the array list values to target activity

intent.putIntegerArrayListExtra("test", (ArrayList<Integer>) test);
startActivity(intent);

here you get values on targetActivty

Intent intent=getIntent();
ArrayList<String> test = intent.getStringArrayListExtra("test");

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