Extremely Laggy RecyclerView Performance

Question

I have a RecyclerView implementation inside of a ViewPager, and its performance is pretty horrible. Here\'s a video of the performance in question.

Answer 1

I was having the same problem with RecyclerView. It was laggy. In my case, there was a horizontal list of image buttons inside RecyclerView.

I solved it by removing the scaleType from ImageButtons or ImageViews and loading images through Picasso with resizing like :

 Picasso.with(context).load(icon.get(position)).resize(270,270).centerCrop().into(holder.iconView);

The problem of lag may occur due to runtime scaling of big sized images or no. of images. It is not advisable. Whereas Picasso takes care of resizing, and loading efficiently. Also it handles caching for you.

Answer 2

I used the same line of code written by TheOddAbhi, I mean

Picasso.with(context).load(icon.get(position)).resize(270,270).centerCrop().into(holder.iconView);

But in my layout file removing the scaleType from my ImageView didn't work, so I removed android:adjustViewBounds="true", which was the problem causing lagging.