How to get selected item of a singlechoice Alert Dialog?

Question

I have this code to show a dialog with singlechoice(radio) options.

AlertDialog ad = new AlertDialog.Builder(this) .setCancelable(false) .setIcon(R.drawable.alert_dialog_icon) .setTitle(R.string.choose_one) .setSingleChoiceItems(seq, pos,null) .setPositiveButton( R.string.ok, new DialogInterface.OnClickListener() {    public void onClick( DialogInterface dialog, int whichButton)    {      // dialog dismissed   }   }).create(); 

How do I get the choice that has been selected?

Answer 1

I know this is an old post, but i just came across it, and found that this solution seems at bit more simple that whats been posted here.

You can just do like this:

In your onClick() handler on the dialog positive button, add the following code:

ListView lw = ((AlertDialog)dialog).getListView(); Object checkedItem = lw.getAdapter().getItem(lw.getCheckedItemPosition()); 

Note that if you haven't selected any option it will crash you have to add a check here before getting the checkedItem with if(lw.getCheckedItemCount() > 0)

Answer 2

I tried to use ListView.setSelection(int) but it never worked as expected so instead I decided to make use of View.setTag() to temporarily store the selected position.

.setSingleChoiceItems(adapter, -1,         new DialogInterface.OnClickListener() {         public void onClick(DialogInterface dialog, int which) {             ListView lv = ((AlertDialog)dialog).getListView();             lv.setTag(new Integer(which));         } }) 

The tag can then be accessed easily after a button click.

.setPositiveButton(R.string.button_text,     new DialogInterface.OnClickListener() {     public void onClick(DialogInterface dialog, int which) {         ListView lv = ((AlertDialog)dialog).getListView();         Integer selected = (Integer)lv.getTag();         if(selected != null) {             // do something interesting         }     } })