MySliceProvider: Implementing the onBindSlice method

MySliceProvider.kt

override fun onBindSlice(sliceUri: Uri): Slice? {
    // (1) Create a Context variable.
    val context = context ?: return null
    // (2) Create the SliceAction to handle clicks on the Slice.
    val activityAction = createActivityAction() ?: return null
    
    // (3) Handle the Uris for returning the Slices here.
    return if (sliceUri.path == "/hello") {
        // Uri's path is recognized as "hello".
        // Note: ANR and StrictMode are enforced here so don't do any heavy operations. 
        // Only bind data that is currently available in memory.
        
        // (3.1) Create a List with Kotlin's DSL as follows, passing in the context, sliceUri and ListBuilder.INFINITY as parameters.
        list(context, sliceUri, ListBuilder.INFINITY) {
            // (3.2) Add a Row to the List as follows, again using Kotlin DSL. ;-)
            row {
                // Set the title of row for the Slice.
                title = "Hello world!"
                // Set the SliceAction for when the Slice is clicked.
                primaryAction = activityAction
            }
        }
    } else {
        // Error: Uri's path not found, show a Slice
        
        // (4) Show an error Slice
        list(context, sliceUri, ListBuilder.INFINITY) {
            row {
                title = "URI not found."
                primaryAction = activityAction
            }
        }
    }
}