Android Programming: The Big Nerd Ranch Guide, 4th Edition

The Easy Way: Implicit Intents

You will browse to this URL first by using your old friend the implicit intent. This intent will start up the browser with your photo URL.

The first step is to make your app listen to presses on an item in the RecyclerView. Update PhotoGalleryFragment’s PhotoHolder to implement a click listener that will fire an implicit intent.

Listing 29.2  Firing an implicit intent when an item is pressed (PhotoGalleryFragment.kt)

class PhotoGalleryFragment : VisibleFragment() {
    ...
    private inner class PhotoHolder(private val itemImageView: ImageView)
        : RecyclerView.ViewHolder(itemImageView),
        View.OnClickListener {

        private lateinit var galleryItem: GalleryItem

        init {
            itemView.setOnClickListener(this)
        } val ...