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

Alert-dialog: it supports 0 to 3 buttons with a list of select-able elements that includes check boxes and radio buttons.

1) ProgressDialog:

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

2) DatePickerDialog:

It is used to give provision to the user to select the date

3) TimePickerDialog:

It is used to give provision to the user to select the time