return int value from dataStore preferences

Question

I have an application where I'm saving int value using datastore preferences, when I get the value, I execute the code and want to return that int value so that I can use it in different places in my code but could not figure it out, if anyone can help, thank you in advance

I tried to make a global member to assign that value and then return but since the value is returned asynchronously, it is crashing the app.

• This is my code

private fun setTextSize() : Int {
        val dataStore = requireContext().createDataStore("textSize")
        lifecycleScope.launch { 
            dataStore.data.collect { 
              val textSize =  it[Common.TEXT_SIZE_PREFERENCE] 
            }
        }
    }

Answer 1

If you want to get the value directly you should use runBlocking . Something like this should do the trick:

val textSize = runBlocking { dataStore.data.first() }[Common.TEXT_SIZE_PREFERENCE]

Answer 2

You can add suspend modifier to your function and access it using CoroutineScope as

suspend fun setTextSize() = dataStore.data.firstOrNull()[Common.TEXT_SIZE_PREFERENCE] ?: -1

While accesing

lifeCycleScope.launch{
    val textSize = setTextSize()
}