new PromptDialogBuilder(this)
	.setPositiveButton(R.string.offer_signup) // sets the positive (ok) button text
	// .setNegativeButton(R.string.cancel) // we can use it but the default should be sufficient
	.setPromptListener(new PromptListener.Impl() {
		@Override
		public void onInputProvided(String input) {
			// do whatever with the email
		}
	}) //
	.setTitle(R.string.offer_signing) // This one now returns the AlertDialog.Builder and now we handle it as a normal Builder
	.setMessage(R.string.offer_need_email) //
	.show();