Android Programming with Kotlin for Beginners

Coding the Fragment classes to use the DataManager class

Add this highlighted code to the InsertFragment class to update the onCreateView function, as follows:

val view = inflater.inflate(
         R.layout.content_insert,
         container,
         false)

// Database and UI code goes here in next chapter
val dm = DataManager(activity!!)

val btnInsert = view.findViewById(R.id.btnInsert) as Button
val editName = view.findViewById(R.id.editName) as EditText
val editAge = view.findViewById(R.id.editAge) as EditText

btnInsert.setOnClickListener(
            {
          dm.insert(editName.text.toString(),
                 editAge.text.toString())
            }
)

return view

In the code, we get an instance of our DataManager class and a reference to each of our UI widgets. Then, in the onClick function of the button, we use ...