What is the right way of Android View Binding in the RecyclerView adapter class?

Question

Here is the code I used in my RecycleView adapter class. I don\'t know this is the right way or not to use View Binding. If you have a better solution answer me. Th

Answer 1

For the folks looking for a solution in Kotlin, here it is:

It's a minimal example, where the adapter gets an array of Strings and displays each of the them in a layout called recyclerview_item in a TextView called itemTextView.

It's based on @SomeshKumar's answer and answers @Vijay Villiers question on how to get rid of the private TextView txt;

Edit: New Version: I noticed the generated ...Binding has a .bind() function, so let's use it. (I guess it might be less resource-heavy?)

class SampleAdapter(private val context: Context, private val content: Array) :
        RecyclerView.Adapter()
{
    class CustomViewHolder(view: View) : RecyclerView.ViewHolder(view)

    override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int) =
            CustomViewHolder(
                    // Alternatively inflate like usual, if you don't need binding
                    RecyclerviewItemBinding
                            .inflate(LayoutInflater.from(context), viewGroup, false)
                            .root
            )

    override fun getItemCount() = content.size

    override fun onBindViewHolder(viewHolder: CustomViewHolder, position: Int)
    {
        RecyclerviewItemBinding.bind(viewHolder.itemView).apply{
            itemTextView.text = content[position]
            
        }
    }
} 

Edit: Old Version:

class SampleAdapter(private val context: Context, private val content: Array) :
        RecyclerView.Adapter()
{
    class CustomViewHolder(var viewBinding: RecyclerviewItemBinding) :
            RecyclerView.ViewHolder(viewBinding.root)

    override fun onCreateViewHolder(viewGroup: ViewGroup, viewType: Int) =
            CustomViewHolder(
                    RecyclerviewItemBinding
                            .inflate(LayoutInflater.from(context), viewGroup, false)
            )

    override fun getItemCount() = content.size

    override fun onBindViewHolder(viewHolder: CustomViewHolder, position: Int)
    {
        viewHolder.viewBinding.apply {
            itemTextView.text = content[position]
        }
    }
}