Image loading binding adapter

_BindingAdapter for loading image.md

• we use a binding adapter for loading an image
• this adapter also then handles setting the error state and modifying scaleTypes to fit our data
• This has made it easy to handle image loading in a consistent fashion while allowing view models to stay independent of that control

BindingAdapters.kt

@BindingAdapter("imageUrl")
fun setProgress(view: ImageView, url: String) {
    Glide.with(view.context)
            .load(url)
            .error(R.drawable.ic_broken_image_black)
            .listener(object : RequestListener<String, GlideDrawable> {
                override fun onException(e: Exception?, model: String?, target: Target<GlideDrawable>?, isFirstResource: Boolean): Boolean {
                    // use this to ensure placeholder icon doesn't stretch to fill too much space
                    view.scaleType = ImageView.ScaleType.CENTER_INSIDE
                    return false
                }

                override fun onResourceReady(resource: GlideDrawable?, model: String?, target: Target<GlideDrawable>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {
                    view.scaleType = ImageView.ScaleType.FIT_CENTER
                    return false
                }

            })
            .into(view)
}