Multi tool use

Access all holder views inside OnBindViewHolder in RecyclerView

I need to set the Clickable property of all the cards in a recycler view (with RecyclerView adapter class) to false once I click on any one of the cards. How do I do that? Setting holder.cardView.setClickable(false) only does it for the clicked one. How do I access all the cards in the view in OnBindViewHolder?

4 Answers
4

You cannot do that due to the way RecyclerView lazy load the child view. The child views are only created and rendered when they are visible on the screen, other views are cleared to save memory.

RecyclerView

You can do these to have the same effect:

1/ Create an overlay FrameLayout on top of your RecyclerView, set its clickable to true, then show/hide it when needed to prevent touch

FrameLayout

RecyclerView

clickable

<FrameLayout>
<RecyclerView ... />

<FrameLayout
android:id="@+id/overlay_view"
...
android:clickable="true" />
</FrameLayout>

cardItem.setOnClickListener(view -> {
// The mOverlayView will intercept all the touch event on RecyclerView
mOverlayView.setVisibility(View.VISIBLE);
})


2/ Create a boolean preventClick variable, set it to true when you want to prevent user's click. Then check for this value in your item's OnClickListener.

boolean preventClick

My idea is:

In your adapter class define:

public static SparseBooleanArray itemCardClickState = new SparseBooleanArray();
private int currentPlayingPosition = -1;


and in your viewHolder class:

myCardItem..setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = getAdapterPosition();
int prev = currentPlayingPosition;
currentPlayingPosition = position;
if (prev >= 0)
notifyItemChanged(prev);
// refresh previously clicked item view
itemCardClickState .put(currentPlayingPosition, true);
}
});


and check the card state in onBinViewHoldee is true or false

I found a long process which solves your problem with a clean code

Step 1 - Take your item click listener to the Activity with an interface. Add this code to your RecyclerView Adapter

private RecyclerViewItemClickListener recyclerViewItemClickListener;

public void setRecyclerViewItemClickListener(RecyclerViewItemClickListener recyclerViewItemClickListener) {
this.recyclerViewItemClickListener = recyclerViewItemClickListener;
}

public interface RecyclerViewItemClickListener {
void onClick(View v);
}


Step 2 - Make the click listener for your item in the ViewHolder, not in the onBindViewHolder

public class ViewHolder extends RecyclerView.ViewHolder {

public ViewHolder(View view) {
super(view);

view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
recyclerViewItemClickListener.onClick(v);
}
});
}
}


In your Activity, use the interface to set click listener and on click override it again with a blank code.

adapter.setRecyclerViewItemClickListener(new RecyclerViewAdapter.RecyclerViewItemClickListener() {
@Override
public void onClick(View v) {
//do everything that should happen on click

//then set a blank click listener
adapter.setRecyclerViewItemClickListener(new RecyclerViewAdapter.RecyclerViewItemClickListener() {
@Override
public void onClick(View v) {

}
});
}
});


I tested it and it works as you want it to

Declare a Integer variable in adapter and assign the corresponding postion to which positioned view is enabled and compare the value in bindItem and enable, disable according. Also make sure to call notifyDataSetChanged() when clicked.

Integer

bindItem

notifyDataSetChanged()

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.