android-recyclerview

问题 I am using this library in my app: Card Library : Guide and created a card as shown in the example. Now I need to handle a click event, but I receive an error when instantiating the following: new Card.OnCardClickListener , which says OnCardClickListener is abstract: cannot be instantiated . In my Activity I have this code: Card card = new Card(getBaseContext());//getContext() CardHeader header = new CardHeader(getBaseContext()); card.addCardHeader(header); final CardViewNative cardView =

问题 There are more than 200 items in my list. RecyclerView is updated regularly (Every 10 seconds) . RecyclerView blocking ui thread for few seconds during updates. I'm using notifyDataSetChanged method for refresh recyclerview. Is there another way to prevent freezing ? By the way I don't want use pagination. This method run every 10 seconds : public void refreshAssetList(List<Asset> newAssetList){ recyclerViewAdapter.setAssetList(newAssetList); recyclerViewAdapter.notifyDataSetChanged(); }

问题 I've investigated several SO answers on this question (here, here, and here) and none of the proposed solutions have worked. My problem is that my RecyclerView list items aren't being displayed. I've set breakpoints in MessengerRecyclerAdapter, onCreateViewHolder, onBindViewHolder, and getItemCount and only the first one is ever called. While in a breakpoint I've entered the expression evaluator and executed MessengerRecyclerAdapter.getItemCount(); And received the expected answer of 20. The

问题 I have Fragment which have a searchview and viewpager . My viewpager has 3 fragments and each fragment calling adapter . Now to implement searchview , i need to call adapter of visible fragment in view pager . SlidingTab(Fragment with searchview and ViewPager): <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/frame_main" android:layout_width="match_parent

问题 I am trying to query the most recent children in my Firebase database and then sort that limit of recent children by a child value. I understand that the Cloud Firestore has recently been released, and that querying features continue to evolve on the Firebase Realtime Database as well. I am using the FirebaseUI FirebaseRecyclerAdapter, and within that adapter you must enter a query. I am tweaking to add 2 queries to my RecyclerView. I am doing so as follows: mFireAdapter = new

问题 I am using onLoadMoreListener when i scroll RecyclerView . It will update the RecyclerView data when you scroll to bottom. After updating the Recyclerview data. The Recyclerview goes back up to the top. Ideally, I would like to retain the position in the RecyclerView . Any thoughts on how I should go about doing this? mAdapter.setOnLoadMoreListener(new OnLoadMoreListener() { @Override public void onLoadMore() { new GroupData().execute(); } }); InnerClass public static class GroupData extends

问题 I have a horizontal RecyclerView that shows 4 cards numbered 1-4. These cards take up the entire width of the screen so only 1 card can be fully visible at a time. The user is presented with the first card, when they swipe the card to the left like this, the RecyclerView will scroll all the way to number 4. I don't want that. I want the swipe to bring the next card (number 2) into the view Similar to how Androids ViewPager works. 回答1: SnapHelper snapHelper = new PagerSnapHelper(); snapHelper

问题 I have been making an app that uses a RecyclerView but its not showing any thing..why contents of the recycler view have not been showing up.my codes are bellow item_contact.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:paddingBottom="10dp" android:paddingTop="10dp"> <TextView android:id="@+id/contact_name" android:layout_width="0dp" android:layout

问题 I am trying to display a context menu on clicking item in a recycler view, and the choose to call the person whose name has been clicked. But I am unable to retrieve the phone number because the getMenuInfo() is not working bcoz I am getting a null in contextMenuInfo in onCreateContextMenu(). I have referenced many answers and written my code accordingly but still not able to correct it Here is my code: menu_actions.xml <?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http:/

问题 I wanted to know how to load more data in recylcer view using firestore. Query query = FirebaseFirestore.getInstance() .collection("ie").limit(5); adapter=new InterviewAdapter(this,query); recyclerView.setAdapter(adapter); recyclerView.setLayoutManager(new LinearLayoutManager(this)); Adapter class looks like this: public class InterviewAdapter extends FireStoreAdapter<InterviewAdapter.ViewHolder> { public interface OnInterviewSelectedListener { void onInterviewSelected(DocumentSnapshot