android-viewholder

So i am using recycler view to show images in a grid and downloading images from url as bitmaps using volley library. public void onBindViewHolder(final TrendingAdapter.ViewHolder viewHolder, int i) { ImageRequest request = new ImageRequest(url, new Response.Listener<Bitmap>() { @Override public void onResponse(Bitmap bitmap) { if (bitmap != null) { viewHolder.getmImageView().setImageBitmap(bitmap); } } }, 0, 0, null, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError volleyError) { } }); AppController.getInstance().addToRequestQueue(request); } The problem is

I am using a RecyclerView with a single row layout with an ImageView and a TextView. I want to implement a OnClickListener for the View and not for seperate ViewHolder objects. How can i get the position of the view in the Adapter? Right now i'm deleting comments on click, but i cannot select the clicked View. I added a TODO in the appropriate line. public class CommentAdapter extends RecyclerView.Adapter<CommentAdapter.ViewHolder> { /** List of Comment objects */ private List<Comment> mCommentList; /** Database with Comment objects */ private CommentsDataSource mDataSource; /** * Construcutor

I am trying to make an app that will be loading news from the network and will be updating dynamically. I am using a RecyclerView and CardView to display the content. I use Jsoup to parse sites. I don't think that my code is needed because my question is more theoretical than practical. I want to understand the process of dynamic updating using notifyDataSetChanged() . In my main activity I get all the headers and add them to list. But I need to wait untill all the items are loaded to start displaying them. I would really appreciate if someone could post a sample code of what I'm trying to do

A little newbie question. Why should we initialize the ViewHolder in getView() ? Why can't we initialize it in the constructor? You will have multiple ViewHolder objects in existence. A ListView by its nature doesn't create new View instances for each of its rows. This is so that if you have a ListView of a million things, you don't need to store layout information for a million things. So what do you need to store? Just the things that are on the screen. You can then reuse those views over and over again. This way, your ListView of a million objects can just have maybe 10 child views. In your

I'm using RecyclerView to display a list of marks, and each mark of the value is shown as a CardView. But some contents of the cards are lost after the scrolling the RecyclerView down and scrolling back, as shown in the two screenshots below. The contents in the red rectangle is lost after scrolling. BEFORE THE SCROLLING; AFTER THE SCROLLING; I'm wondering whether or not it's a bug of RecyclerView and find no solution after Googling for it. All views are invisible except the title, their visibilities are depends on the mark's value. Does anyone know why this would happen? onBindHolder called

What are the advantages of this approach (using static nested class in my class MyAdapter extends RecyclerView.Adapter): static class MyVH extends RecyclerView.ViewHolder {...} And this approach (using member inner class): class MyVH extends RecyclerView.ViewHolder {...} Or it doesn't affect performance and both approaches could be used? droidpl It is more a java question than an Android question. It is recommended to use static for inner classes to avoid memory leaks if you will take their instances out of the class. You can have a look at this awesome post that explains the memory leaks on