Android - Programming Style - RecyclerView - Use SetText in ViewHolder or in onBindViewHolder?

Question

When setting OnClickListeners to items in the RecyclerView it's recommended to do that in the inner class like this:

public ViewHolder(View itemView) {
    super(itemVIew);
    nameTextView = (TextView) itemView.findViewById(R.id.item_name);
    itemView.setOnClickListener(this);
}

When I see code for setting text it's usually in the onBindViewHolder method:

@Override
public void onBindViewHolder(SetPlayerNameViewHolder holder, int position) {
    holder.nameTextView.setText(String.valueOf("Random Text"));
}

If the text never changes, shouldn't it be in the inner class?

public ViewHolder(View itemView) {
    super(itemVIew);
    nameTextView = (TextView) itemView.findViewById(R.id.item_name);
    nameTextView.setText(String.valueOf("Random Text"));
    itemView.setOnClickListener(this);
}

Edit: And what if you retrieve a value that is different for all TextViews, but should not be updated when the RecyclerView reloads it

public ViewHolder(View itemView) {
    super(itemVIew);
    nameTextView = (TextView) itemView.findViewById(R.id.item_name);

    // Not the actual methods, but to make it more readable
    int i = itemView.getPosition()
    String randomText = getTextFromDatabaseWhereRowIs(i)

    nameTextView.setText(String.valueOf(randomText));
    itemView.setOnClickListener(this);
}

Answer 1

Yes you are right...

1. onBindViewHolder(..., int position) get called for individual items of RecyclerView. If your text is different for each item then you should use it from onBindViewHolder() using position to get the correct text.

@Override
public void onBindViewHolder(SetPlayerNameViewHolder holder, int position) {
    String item = YourList.get(position); // For example YourList is an ArrayList of String
    holder.nameTextView.setText(item);
}

2. If text is fixed for each item then you can set it from ViewHolder as you said or you can make it fix from TextView XML using android:text="YOUR_TEXT".

public ViewHolder(View itemView) {
    super(itemVIew);
    nameTextView = (TextView) itemView.findViewById(R.id.item_name);
    nameTextView.setText("Random Text");
}

Hope this will help~