How to create a custom preference with a neutral button?

Question

I use the code below to create a custom preference. The xml layout file has a Button, EditText and TextView. This custom layout appears inside an Alert with "OK" and "Cancel" buttons. This all works well.

I would like to add a third button (a neutral button) beside the "OK and "Cancel" buttons. I've experimented with the AlertBuilder class but can't figure out how to incorporate both my custom xml layout and a neutral button.

How can this be done?

Currently have...

public class MelsMessage extends DialogPreference {

    Button bMessage;
    EditText eMessage;
    TextView tMessage;

    public MelsMessage(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }



    protected View onCreateDialogView() {

        LayoutInflater layoutInflater = LayoutInflater.from(getContext());
        View view = layoutInflater.inflate(R.layout.dialog_pref_mess, null);

        //UI elements

        bMessage = (Button) view.findViewById(R.id.buttonMessage);
        eMessage = (EditText) view.findViewById(R.id.edittextMessage);
        tMessage = (TextView) view.findViewById(R.id.textviewMessage);


        return view;        
    }

}

Answer 1

I see your question is a bit old and maybe you already have the answer to your question but here is a solution for your class that extends DialogPreference.

First you have to Override the onPrepareDialogBuilder method in your MelsMessage class:

@Override
protected void onPrepareDialogBuilder(AlertDialog.Builder builder)
{
    super.onPrepareDialogBuilder(builder);
    builder.setNeutralButton("hello", this);
}

this in the setNeutralButton method is DialogInterface.OnClickListener interface that the DialogPreference class implement.

The last thing you have to do is to Override the onClick method in your MelsMessage class:

@Override
public void onClick(DialogInterface dialog, int which)
{
    super.onClick(dialog, which);

    switch (which)
    {
        case DialogInterface.BUTTON_POSITIVE:
            // do things for the right button
            break;

        case DialogInterface.BUTTON_NEGATIVE:
            // do things for the left button
            break;

        default:
            // do things for the center button
            break;
    }
}

If you want to handle the click in another class all you have to do is to implement DialogInterface.OnClickListener in this class.

Hope this will help you. Cheers.