<What does "activity?." mean in Kotlin?> I am tryi...

# stackoverflow

[user]

What does "activity?." mean in Kotlin?
I am trying to use a code snippet from the official android documentation (https://developer.android.com/training/printing/photos#kotlin) which is the doPhotoPrint() function in the code that I have attached, in order to learn how to use the PrintHelper class in Kotlin and Android Studio. See the attached image of the the code snippet:
<a href="

https://i.stack.imgur.com/POhMj.png▾

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