There are 4 dialog boxes which have been supported by Android. These are as follows:

AlertDialog: it supports 0 to 3 buttons with a list of selectable elements that includes check boxes and radio buttons.

-ProgressDialog: it displays the progress of any dialog or application. It is an extension of AlertDialog and supports adding buttons.

-DatePickerDialog: it is used to give provision to the user to select the date

- TimePickerDialog: it is used to give provision to the user to select the time