Dialogs demand attention and input from the user. They are useful for presenting a choice or important information. In this chapter, you will add a dialog in which users can change the date of a crime. Pressing the date button in CrimeDetailFragment will present this dialog (Figure 14.1).

Figure 14.1  A dialog for picking the date of a crime

The dialog in Figure 14.1 is an instance of DatePickerDialog, a subclass of AlertDialog. DatePickerDialog displays a date selection prompt to the user and provides a listener interface you can implement to capture the selection. For creating more custom dialogs, AlertDialog is the all-purpose Dialog subclass that you will use most often.