override fun onViewCreated()

in CameraXBasic/app/src/main/java/com/android/example/cameraxbasic/fragments/GalleryFragment.kt [89:173]
52 lines of code
4 McCabe index (conditional complexity)

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        //Checking media files list
        if (mediaList.isEmpty()) {
            fragmentGalleryBinding.deleteButton.isEnabled = false
            fragmentGalleryBinding.shareButton.isEnabled = false
        }

        // Populate the ViewPager and implement a cache of two media items
        fragmentGalleryBinding.photoViewPager.apply {
            offscreenPageLimit = 2
            adapter = MediaPagerAdapter(childFragmentManager)
        }

        // Make sure that the cutout "safe area" avoids the screen notch if any
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            // Use extension method to pad "inside" view containing UI using display cutout's bounds
            fragmentGalleryBinding.cutoutSafeArea.padWithDisplayCutout()
        }

        // Handle back button press
        fragmentGalleryBinding.backButton.setOnClickListener {
            Navigation.findNavController(requireActivity(), R.id.fragment_container).navigateUp()
        }

        // Handle share button press
        fragmentGalleryBinding.shareButton.setOnClickListener {

            mediaList.getOrNull(fragmentGalleryBinding.photoViewPager.currentItem)?.let { mediaFile ->

                // Create a sharing intent
                val intent = Intent().apply {
                    // Infer media type from file extension
                    val mediaType = MimeTypeMap.getSingleton()
                            .getMimeTypeFromExtension(mediaFile.extension)
                    // Get URI from our FileProvider implementation
                    val uri = FileProvider.getUriForFile(
                            view.context, BuildConfig.APPLICATION_ID + ".provider", mediaFile)
                    // Set the appropriate intent extra, type, action and flags
                    putExtra(Intent.EXTRA_STREAM, uri)
                    type = mediaType
                    action = Intent.ACTION_SEND
                    flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
                }

                // Launch the intent letting the user choose which app to share with
                startActivity(Intent.createChooser(intent, getString(R.string.share_hint)))
            }
        }

        // Handle delete button press
        fragmentGalleryBinding.deleteButton.setOnClickListener {

            mediaList.getOrNull(fragmentGalleryBinding.photoViewPager.currentItem)?.let { mediaFile ->

                AlertDialog.Builder(view.context, android.R.style.Theme_Material_Dialog)
                        .setTitle(getString(R.string.delete_title))
                        .setMessage(getString(R.string.delete_dialog))
                        .setIcon(android.R.drawable.ic_dialog_alert)
                        .setPositiveButton(android.R.string.yes) { _, _ ->

                            // Delete current photo
                            mediaFile.delete()

                            // Send relevant broadcast to notify other apps of deletion
                            MediaScannerConnection.scanFile(
                                    view.context, arrayOf(mediaFile.absolutePath), null, null)

                            // Notify our view pager
                            mediaList.removeAt(fragmentGalleryBinding.photoViewPager.currentItem)
                            fragmentGalleryBinding.photoViewPager.adapter?.notifyDataSetChanged()

                            // If all photos have been deleted, return to camera
                            if (mediaList.isEmpty()) {
                                Navigation.findNavController(requireActivity(), R.id.fragment_container).navigateUp()
                            }

                        }

                        .setNegativeButton(android.R.string.no, null)
                        .create().showImmersive()
            }
        }
    }