override fun onViewCreated()

in People/app/src/main/java/com/example/android/people/ui/chat/ChatFragment.kt [71:146]
68 lines of code
7 McCabe index (conditional complexity)

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        val id = arguments?.getLong(ARG_ID)
        if (id == null) {
            parentFragmentManager.popBackStack()
            return
        }
        val prepopulateText = arguments?.getString(ARG_PREPOPULATE_TEXT)
        val navigationController = getNavigationController()

        viewModel.setChatId(id)

        val messageAdapter = MessageAdapter(view.context) { uri ->
            navigationController.openPhoto(uri)
        }
        val linearLayoutManager = LinearLayoutManager(view.context).apply {
            stackFromEnd = true
        }
        binding.messages.run {
            layoutManager = linearLayoutManager
            adapter = messageAdapter
        }

        viewModel.contact.observe(viewLifecycleOwner) { contact ->
            if (contact == null) {
                Toast.makeText(view.context, "Contact not found", Toast.LENGTH_SHORT).show()
                parentFragmentManager.popBackStack()
            } else {
                requireActivity().setLocusContext(LocusId(contact.shortcutId), null)
                navigationController.updateAppBar { name, icon ->
                    name.text = contact.name
                    icon.setImageIcon(Icon.createWithAdaptiveBitmapContentUri(contact.iconUri))
                    startPostponedEnterTransition()
                }
            }
        }

        viewModel.messages.observe(viewLifecycleOwner) { messages ->
            messageAdapter.submitList(messages)
            linearLayoutManager.scrollToPosition(messages.size - 1)
        }

        if (prepopulateText != null) {
            binding.input.setText(prepopulateText)
        }

        binding.input.setOnImageAddedListener { contentUri, mimeType, label ->
            viewModel.setPhoto(contentUri, mimeType)
            if (binding.input.text.isNullOrBlank()) {
                binding.input.setText(label)
            }
        }

        viewModel.photo.observe(viewLifecycleOwner) { uri ->
            if (uri == null) {
                binding.photo.visibility = View.GONE
            } else {
                binding.photo.visibility = View.VISIBLE
                Glide.with(binding.photo).load(uri).into(binding.photo)
            }
        }

        binding.voiceCall.setOnClickListener {
            voiceCall()
        }
        binding.send.setOnClickListener {
            send()
        }
        binding.input.setOnEditorActionListener { _, actionId, _ ->
            if (actionId == EditorInfo.IME_ACTION_SEND) {
                send()
                true
            } else {
                false
            }
        }
    }