ArrayList Into String

Question

I have a Activity that pulls an Array from the previous Activity. I can use this code below which gets the Array from the previous Activity and puts it into a TextView.

Update using initWheel(R.id.passw_1, names.toArray(new String[names.size()])); fixed the problem

ArrayList<String> names = intent.getStringArrayListExtra("KEY");

    TextView et2 = (TextView) findViewById(R.id.editText2);
    et2.setText("");
    if (names.size() > 0) {
        for (String str : names) {
            et2.append(str + "    ");
        }
    }

This works fine but is not what I need exactly. Instead of it populating a TextView I need it to fill a String which is like this

initWheel(R.id.passw_1, "ArrayList Here");

I have another which will be set by default in the code that looks like this and I need the array to populate the one above in the same format:

initWheel(R.id.passw_2, new String[] { "Foo", "Bar" });

Well it is a wheel that can be spun around so for R.id.passw_2 it fills the wheel with values "foo" and "bar" — Matt
– Matt, Commented Jan 13, 2012 at 11:30

jeet · Accepted Answer · 2012-01-13 11:26:43Z

3

I think you are asking about getting string array from arraylist, if so please use following method:

String[] strArr = list.toArray();

answered Jan 13, 2012 at 11:26

jeet

29.2k6 gold badges55 silver badges54 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

Matt Over a year ago

I dont quite understand how to implement that?

Jens Over a year ago

Assuming the ArrayList is named names you could do initWheel(R.id.passw_2, names.toArray(new String[names.size()]));

Matt Over a year ago

@Jens that makes more sense would that output it exactly like initWheel(R.id.passw_2, new String[] { "Foo", "Bar" });

Jens Over a year ago

Yes, the return value of the names.toArray(new String[names.size()]) call is a String[], i.e. exactly what you are passing when you pass new String[]{"foo","bar"}.

Matt Over a year ago

@Jens Cool Ill give it a test now :)

|

Collectives™ on Stack Overflow

ArrayList Into String

1 Answer 1

6 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

6 Comments

Your Answer

Sign up or log in

Post as a guest

Related