I have query that I need to call in scope.launch:

   composeView {
            MyTheme {
                // Create a CoroutineScope that follows this composable's lifecycle
                val composableScope = rememberCoroutineScope()
                LaunchedEffect(key1 = "", block = {
                    composableScope.launch {
                        val b: Boolean = database.query()
                    }
                })
            }

Now I want to pass b to a Composble :

@Composable
    private fun Content(b: Boolean) {

    }

How should I call Content since @Composable invocations can only happen from the context of a @Composable function? If I put Content inside launch block, I receive above error message.

CodePudding user response：

You can use the scopes to make the background calls like fetching from the database and make use of mutable states to pass it on to a composable.

For Example:

val foo = remember { mutableStateOf("") } 

LaunchedEffect(true) { 
  foo.value = bar()
}

Text (text = foo.value)