How do I close an Android alertdialog

Question

I am developing a quiz and I need the user to answer all the questions before proceeding. When the user has not answered all the questions I display a simple alertdialog informing him or her. The problem is whatever I do I can't get the alertdialog to close. Why isn't dialog.cancel working?`This is the code:

AlertDialog.Builder ad = new AlertDialog.Builder(this);   ad.setTitle("Unanswered Questions");   ad.setMessage("You have not answered all the questions.");    ad.setPositiveButton("OK", new DialogInterface.OnClickListener() {      public void onClick(DialogInterface dialog, int id) {        dialog.cancel();  }   });   ad.show();  

Answer 1

try using

dialog.dismiss()

instead of using

dialog.cancel()

Answer 2

The AlertDialog.Builder itself does not contain a dismiss() or cancel() method.

It is a convenience class to help you create a Dialog, which DOES have access to those methods.

Here is an example:

AlertDialog.Builder builder = new AlertDialog.Builder(this);   AlertDialog alert = builder.create();  alert.show(); 

You can then call the alert.cancel() method on the alert (not the builder).