Lifecycle Safe delegate

Activity.kt

class Activity:AppCompatActivity{
  
    val actionsAdapter:MyListAdapter by lifecycleSafe(this){
        MyListAdapter()
    }
  
}

LifecycleSafeDelegate.kt

class lifecycleSafe<T>(lifecycleOwner: LifecycleOwner,val initValue :()-> T) :  LifecycleObserver {

    private var value: T? = null

    init {
        lifecycleOwner.lifecycle.addObserver(this)
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
    fun create() {
        value = initValue()
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
    fun destroy() {
        value = null
    }

    operator fun setValue(thisRef: Fragment, property: KProperty<*>, value: T) {
        throw IllegalStateException("Cannot set value on a ReadOnlyProperty")
    }

    operator fun getValue(thisRef: Fragment, property: KProperty<*>): T {
        return value!!
    }
}