Android supports four dialog boxes. They are:
AlertDialog:
The AlertDialog supports 0-3 buttons, along with a list of selectable items such as checkboxes and radio buttons.
It is used when you want to ask the user about taking a decision between yes or no in response to any particular action taken by the user, by remaining in the same activity and without changing the screen.
DatePickerDialog:
It is used for selecting the date by the user.
TimePickerDialog:
Used for selecting the time by the user.
ProgressDialog:
It is an extension of the AlertDialog and is used to display a progress bar. It also supports the addition of buttons.
This class was deprecated in API level 26 because it prevents the user from interacting with the application. Instead of this class, we can use a progress indicator such as ProgressBar, which can be embedded in the user interface of your application.
