Hot to navigate to activity from fragment - android-studio

Question

This is my first post, so I will try to explain myself the best I can.
This is my first project in android with kotlin, and Im creating a simple app with 3 tabs. Im trying to make a simple navigation from a button in one of the 3 fragments associated with the 3 tab views to a new activity. This button have the function "push" associated.
I attach the code from the fragment, where you can see the function to navigate "push" which start the new activity. If I place that function in the onCreateView section, it works fine when I enter the fragment. I had no problem doing this navigation from an activity to another using a similar button and function but i dont know how fragments properly works, so i guess there is a thing relative to them i am missing. It seems like the function is not recognized outside the onCreate section, so maybe i have to declare it in another way:
class NotificationsFragment : Fragment() {
private var _binding: FragmentNotificationsBinding? = null
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentNotificationsBinding.inflate(inflater, container, false)
return binding.root
}
private val binding get() = _binding!!
fun push(view: View) {
val intent = Intent(activity, tutorialPrueba::class.java)
startActivity(intent)
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
}
I was not able to find any solution that helps me in this case. As long this is my first post, i will thank any help or recommendation relative to the way I posted or how i can make it better. Also sorry for my poor english.
Thanks in advance.

Answer 1

If you are using the DataBinding, the onClick declared in the layout xml does not work. So to make the button, once pressed, call your method you have to do this:
private var _binding: FragmentNotificationsBinding? = null
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentNotificationsBinding.inflate(inflater, container, false)
_binding.idOfButtonToPress.setOnClickListener{ //replace idOfButtonToPress with the real android:id of button
push()
}
return binding.root
}
private val binding get() = _binding!!
fun push() {
val intent = Intent(activity, tutorialPrueba::class.java)
startActivity(intent)
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}