var state by savedInstanceState{0}
Button(onClick ={state++}) {
    Text(text = "Increase $state")
}

Am I right in thinking

state

should be saved when I restart the app? Because it doesn't do that

Depends on what kind of restart we're talking about

the one where I press the debug icon again

Long-winded context incoming 😄

Oh I see, the words "process recreation" made me think it's an alternative to saved preferences

The above is just where we're starting from today 🙂

to be honest it's probably easy to make a method / delegated property like that that does what I was thinking of, as long as you supply it some String key or even use the local variable name as the key

Expected use cases for it are things like your current navigational state or scroll positions

oh, shared preferences is getting replaced? finally the data storage solution will have a sensible name

Anyway it would be better to handle peristent data not in the UI code directly.

@Fudge if I am correct, you can simulate a system killing the process with the black square

Terminate Application

button in for example logcat

finally the data storage solution will have a sensible name

that's kind of the first indicator that SharedPreferences was never a general purpose data storage solution to begin with 😄 though people have certainly ran with it over the years. it was basically written to hold things of the same level of complexity and importance as, "I prefer dark mode"

@Adam Powell will it also be prohibited to call it from the main thread? I have seen people storing (and fetching every activity startup) a user object including a base64 encoded profile picture 😅 slowing down everything thing (yay hidden disk IO)

that is a long and contentious question 🙂 the default mode of operation for it is that reads are

suspend

functions

that is good to hear 🙂

and we've seen time and time again that people will figure out a way to block a thread if you give them an async API. In this case someone tossing a

runBlocking

around a suspend call on the main thread can lead to things going considerably slower than just performing the operation there in the first place, thanks to things like kernel scheduling and priority inversions across the system

the ingenuity of the human mind 😅

@Adam Powell How does the new data store thing compare to Room?

nosql vs. sql, in a very rough analogy