Force RecyclerView to redraw its items

Is there any way to redraw all items of RecyclerView?

I have some Themes (in style.xml) and after changing the theme, I need the RecyclerView to be redrawn.

So I want a method that will force to re-call onCreateViewHolder for each items of the adapter.

I tried to:

• call adapter.notifyDataSetChanged but onCreateViewHolder is not called
• call recyclerView.setVisibility(View.GONE) and then recyclerView.setVisibility(View.VISIBLE)
• call recyclerView.invalidate()
• call recyclerView.setAdapter(null) and then recyclerView.setAdapter(adapter).
  This works well for 90% items. Only 90% of items will get the new style, but some items will have the old style

I mention that the RecyclerView is attached to an Activity, not to a Fragment.

I found the answer! The correct way to do this is:

recyclerView.setAdapter(null);
recyclerView.setLayoutManager(null);
recyclerView.setAdapter(myAdapter);
recyclerView.setLayoutManager(myLayoutManager);
myAdapter.notifyDataSetChanged();

After that, all the items are getting the new style!

Simply setting recyclerview's adapter again worked for me (I wanted RecyclerView to redraw all items' layout again)

/**
 * Forces RecyclerView adapter to call createViewHolder() - i.e. redraw all all items' layouts
 */
private fun resetAdapterState() {
    val myAdapter = recyclerView.adapter
    recyclerView.adapter = myAdapter
}

If you want to force redraw, you need clear View Pool of RecycleView. You can use recyclerView.getRecycledViewPool().clear();

The below lines of code did the trick for me

recyclerview.swapAdapter(myAdapter,false);
recyclerview.setLayoutManager(myLayoutManager);
myAdapter.notifyDataSetChanged();

I know this is old, but I had a situation where I needed to change the viewholder types after notifyDataSetChanged(). If the adapter already had data, onCreateViewHolder was not being called because of the "recycle" part of recycleviewadapter, so a type cast error was being thrown in onBindViewHolder.

I was able to solve this by calling myRecyclerView.getLayoutManager().removeAllViews(); before calling notifyDataSetChanged(); on the adapter.

Resetting the Adapter worked for me, I called this inside onConfigChange

myRecyclerView.setAdapter(myAdapter)

The only solution that worked for me on an Amazon Fire HD was this:

recyclerView.setAdapter(null);
recyclerView.setLayoutManager(null);
recyclerView.getRecycledViewPool().clear();
recyclerView.swapAdapter(myAdapter, false);
recyclerView.setLayoutManager(layoutManager);
myAdapter.notifyDataSetChanged();

Hope it helps!

Take a look at this answer: https://stackoverflow.com/a/33342314/4142087

Shortly, you can create different types of view holders, changing view type will force RecyclerView to pass another ViewHolder to the onBindViewHolder.

If you use setTheme, you have to recreate whole Activity like this: https://stackoverflow.com/a/14367214/4142087

Force RecyclerView to onCreateViewHolder or redraw its items #Kotlin

This worked for me 

        this.runOnUiThread {
            val adapter = recyclerView.adapter
            val layoutManager = recyclerView.layoutManager
            recyclerView.adapter = null
            recyclerView.layoutManager = null
            recyclerView.adapter = adapter
            recyclerView.layoutManager = layoutManager
            adapter!!.notifyDataSetChanged()
        }

hope this can help

After trying most of the ideas here - if turns out that my issue was down to using a simulator. When testing on devices I've had no issues with this.

This works for me:

recyclerView.adapter = recyclerView.adapter
recyclerView.post {
    recyclerView.adapter?.notifyDataSetChanged()
}

It shows blank if running without post{}