如何在activity onCreate中观察mutableStateOf

import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue

class MainActivity : AppCompatActivity() {
    private var myState by mutableStateOf("Initial Value")

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        // ...

        observe {
            myState = "New Value"
        }
    }

    private fun observe(block: () -> Unit) {
        lifecycleScope.launchWhenCreated {
            block()
        }
    }
}