Android Programming: The Big Nerd Ranch Guide, 5th Edition

Creating a Data Class

In the project tool window, right-click the com.bignerdranch.android.criminalintent package and select New → Kotlin Class/File. Name the file Crime and, since this class will be used to store data, make it a Data Class.

For this project, an instance of Crime will represent a single office crime. To begin with, a Crime will have four properties:

• an ID to uniquely identify the instance

• a descriptive title, like “Toxic sink dump” or “Someone stole my yogurt!”

• a date

• a Boolean indication of whether the crime has been solved

In Crime.kt, add these four properties to Crime’s constructor.

Listing 9.2  Adding the Crime data class (Crime.kt)

data class Crime(
    val id: UUID,
    val title: String, ...