I used takeIf for conditional judgment, but still encountered the following exception:

So i need to write a navigation for my kotlin project:

I’m trying to make Image/Video slider using View Flipper

I want to make an caller app which identifies a call and searches the number in my internal database and then gives the name of the caller accordingly using android studio

Suppose I have the following code :

I have the following question. The following code snippet throws me the error shown below. allowedWebhookStates contains enums. What do I have to change so that I can check whether the setOf of allowedWebhookStates contains the web.event which is a string?

So I have this code where I am trying to get it to remove or edit from a RoomDB, visually it removes or edits the recycler view but when I restart the activity it remains the same but this time I can actually remove or edit it. So I need to restart my activity for me to be able to modify my RoomDB

I have two nullable ancapsulated objects like:

I’m trying to learn Kotlin in Android Studio 2023.3.1 by working my way through the examples in Android Programming, The Big Nerd Ranch, 5th Edition. The CriminalIntent example contains the class CrimeDetailFragment.kt, shown below:

The next NotificationUtil help me to show the notification with pdf file, but when i click on notification and select the pdf viewer, so show me the next message: ‘You can not open file’