Computer scienceMobileAndroidUser InterfaceUI components

AlertDialog

An AlertDialog is not showing up!

Report a typo

Jasmin is trying to show an AlertDialog whenever the user clicks on the alertDialogButton but it is not showing up. She checked her code and there are no compilation or runtime errors. Help her identify the problem.

alertDialogButton.setOnClickListener {
    AlertDialog.Builder(this)
        .setTitle("Alert Dialog!")
        .setMessage("")
        .setPositiveButton(android.R.string.ok) { _, _ ->
        }
        .setNegativeButton(android.R.string.cancel, null)
}

Select one or more options from the list

She forgot to specify what action should be done when the positive button is clicked.

She forgot to call the show() method.

She forgot to specify the text for the message.

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