CODEWITHSUNDEEP
androidlistandroid-alertdialogbuilder
Saeed Joul
Saeed Joul

Reputation: 244

populate builder.setItem with a list<>

I'm trying to build an AlertDialog using Builder. My dialog has to have multiple option the user can choose from. I found on android developers website that I can use builder.setItems(int, DialogInterface.onClickListener). my problem is that im trying to pass a List addresses instead of the int. I want the user to choose an option from the list of addresses. Here's my code for illustration:

    private List<Address> addresses;

    protected void updateMap() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Pick an Address");

    builder.setItems(addresses, new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface arg0, int choosenAddress) {

            //address = addresses.get(choosenAddress); //choose result from the array

        }
    });

In the builder.setItems ..i get an error saying this argument does not take list.

Upvotes: 1

Views: 5819

Answers (2)

Bal&#225;zs &#201;des
Bal&#225;zs &#201;des

Reputation: 13807

An extension to nandeesh's answer

String [] addressStrings = new String [addresses.size()];

for(int i=0; i<addresses.size(); i++)
    addressStrings[i] = addresses.get(i).toString();

You need to override the toString() method of the Address class, to create meaningful String representations of Address objects.

Now in the onClick() method you can still access the Address object by the given index, because the size, and element order of the addresses list and the addressStrings array are the same.

Address selected = addresses.get(choosenAddress);

Upvotes: 1

nandeesh
nandeesh

Reputation: 24820

SetItems takes Charsequence Array as a parameter, so you will have to convert List<Address> to List<String> and then use list.toarray()

Upvotes: 2

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