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This has been answered just fine, but I keep finding this answer from Google and I wanted to share a non-anonymous class solution. I prefer reusable classes myself and may be helpful to others. In this example, I'm using a <code>DialogFragment</code> implementation and retrieving a value via a callback method. The callback method to get values from a Dialog can be done by creating a public interface <pre><code>public interface OnDialogSelectorListener { public void onSelectedOption(int selectedIndex); } </code></pre> Also the <code>DialogFragment</code> implements <code>DialogInterface.OnClickListener</code> which means you can register the class you've implemented as the OnClickListener for the <code>DialogFragment</code> that is being created. For example <pre><code>public Dialog onCreateDialog(Bundle savedInstanceState) { final AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity()); builder.setTitle(R.string.select); builder.setSingleChoiceItems(mResourceArray, mSelectedIndex, this); builder.setPositiveButton(R.string.ok, this); builder.setNegativeButton(R.string.cancel, this); return builder.create(); } </code></pre> The line <code>builder.setSingleChoiceItems(mResourceArray, mSelectedIndex, this);</code> Creates a choice dialog with the options from a resource array stored in mResourceArray. This also preselects an option index from what is stored in mSelectedIndex and finally it sets <code>this</code> itself as the OnClickListener. (See full code at the end if this paragraph is a tad confusing) Now, the OnClick method is where you grab the value that comes from the dialog <pre><code>@Override public void onClick(DialogInterface dialog, int which) { switch (which) { case Dialog.BUTTON_NEGATIVE: // Cancel button selected, do nothing dialog.cancel(); break; case Dialog.BUTTON_POSITIVE: // OK button selected, send the data back dialog.dismiss(); // message selected value to registered callbacks with the // selected value. mDialogSelectorCallback.onSelectedOption(mSelectedIndex); break; default: // choice item selected // store the new selected value in the static variable mSelectedIndex = which; break; } } </code></pre> What happens here is when an item is selected, it's stored in a variable. If the user clicks the Cancel button, no update is sent back and nothing changes. If the user clicks the OK button, it returns the value to the <code>Activity</code> that created it via the callback created. As an example, here is how you would create the dialog from a <code>FragmentActivity</code>. <pre><code>final SelectorDialog sd = SelectorDialog.newInstance(R.array.selector_array, preSelectedValue); sd.show(getSupportFragmentManager(), TAG); </code></pre> Here, the resource array _R.array.selector_array_ is an array of strings to show in the dialog and preSelectedValue is the index to select on open. Finally, your <code>FragmentActivity</code> will implement <code>OnDialogSelectorListener</code> and will receive the callback message. <pre><code>public class MyActivity extends FragmentActivity implements OnDialogSelectorListener { // .... public void onSelectedOption(int selectedIndex) { // do something with the newly selected index } } </code></pre> I hope this is helpful to someone, as it took me MANY attempts to understand it. A full implementation of this type of <code>DialogFragment</code> with a callback is here. <pre><code>public class SelectorDialog extends DialogFragment implements OnClickListener { static final String TAG = "SelectorDialog"; static int mResourceArray; static int mSelectedIndex; static OnDialogSelectorListener mDialogSelectorCallback; public interface OnDialogSelectorListener { public void onSelectedOption(int dialogId); } public static DialogSelectorDialog newInstance(int res, int selected) { final DialogSelectorDialog dialog = new DialogSelectorDialog(); mResourceArray = res; mSelectedIndex = selected; return dialog; } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mDialogSelectorCallback = (OnDialogSelectorListener)activity; } catch (final ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnDialogSelectorListener"); } } public Dialog onCreateDialog(Bundle savedInstanceState) { final AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity()); builder.setTitle(R.string.select); builder.setSingleChoiceItems(mResourceArray, mSelectedIndex, this); builder.setPositiveButton(R.string.ok, this); builder.setNegativeButton(R.string.cancel, this); return builder.create(); } @Override public void onClick(DialogInterface dialog, int which) { switch (which) { case Dialog.BUTTON_NEGATIVE: dialog.cancel(); break; case Dialog.BUTTON_POSITIVE: dialog.dismiss(); // message selected value to registered calbacks mDialogSelectorCallback.onSelectedOption(mSelectedIndex); break; default: // choice selected click mSelectedIndex = which; break; } } } </code></pre> Question from a comment How to call this from a <code>Fragment</code> instead of an <code>Activity</code>. First make a few changes to the <code>DialogFragment</code>. Remove the <code>onAttach</code> event since that's not the easiest way in this scenario. Add a new method to add a reference to the callback <pre><code>public void setDialogSelectorListener (OnDialogSelectorListener listener) { this.mListener = listener; } </code></pre> Implement the listener in your <code>Fragment</code> <pre><code>public class MyFragment extends Fragment implements SelectorDialog.OnDialogSelectorListener { // .... public void onSelectedOption(int selectedIndex) { // do something with the newly selected index } } </code></pre> Now create a new instance and pass in a reference to the <code>Fragment</code> to use it. <pre><code>final SelectorDialog sd = SelectorDialog.newInstance(R.array.selector_array, preSelectedValue); // this is a reference to MyFragment sd.setDialogSelectorListener(this); // mActivity is just a reference to the activity attached to MyFragment sd.show(this.mActivity.getSupportFragmentManager(), TAG); </code></pre>
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1. POHow to select a entry in AlertDialog with single choice checkbox android?
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1. COThank you for your explanations. How would you implement the callback so that a `Fragment` instead of an `Activity` is informed when the listener fires?
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2. COI've added an explanation for how I use this in a `Fragment`
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