Android Studio(Kotlin)如何将StringArray转换为MutableList

我想从Resources获取一个StringArray并将其转换为MutableList

我试了下面的代码

var morality = mutableListOf(activity.resources.getStringArray(R.string.morality))

但它给了我一个错误说

Type mismatch Required: String? Found: ArrayOut<(out)String!>!

我用它解决了

 var morality = (activity.resources.getStringArray(R.string.morality).toMutableList())