Update Optional Comments In Kotlin Tutorials

[AdamMc331]

https://chat.stackoverflow.com/transcript/message/37581345#37581345

[AdamMc331]

Also comment out "..." lines.

[TimCastelijns]

In AddTaskActivity, change if (description?.text?.toString().isNullOrEmpty()) to use isNullOrBlank() instead, to also check if the text is not only made up of spaces

[TimCastelijns]

In tutorial part 2, change val adapter = TaskAdapter() in onCreate to be class var var adapter: TaskAdapter? = TaskAdapter() as seen in the finished code.

Or perhaps initialize it as null, since the initial value of = TaskAdapter() is not used.

[TimCastelijns]

In part 3, maybe mention that string resources for AddTaskActivity xml are not yet defined (or just hardcode them)

[TimCastelijns]

In part 4, "We’ve already marked our tasks and serializable in part 2" should perhaps be "We’ve already marked our tasks as serializable in part 2" (and->as)

[TimCastelijns]

In part 4, adapter?.tasks = tasks is highlighted with "Smart cast to kotlin.collections.MutableList<com.package.Task>". Maybe add a note what that means

[AdamMc331]

@TimCastelijns Regarding your comment about part 2, I think I should leave it as val adapter = TaskAdapter(), and then remove the setter inside of onCreate(). There's no need to do that, and there's also no need to make it optional. I will update the code this way.

[AdamMc331]

@TimCastelijns Can you look over #5 and give me a thumbs up if you like it?

[TimCastelijns]

I upthumbed it. Not sure if you get a notification for that

[AdamMc331]

I didn't, thanks! Will merge and update the site.