android-recyclerview

问题 Background I need to create a UI of a details screen, which includes various fields, in a list fashion. This is why I chose to use RecyclerView, because there could be a lot of fields and I don't want that all views will be inflated from start. The problem in one of the rows, I actually have to put tags. The row has a title like most of the other rows, and might have an icon on the right like most of them, yet the real content is the tags themselves. They wrap if there is no more space.

问题 While running my recyclerview list fragment i am getting this error java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object android.support.v4.view.AccessibilityDelegateCompat.getBridge()' on a null object reference at android.support.v4.view.ViewCompat$ICSViewCompatImpl.setAccessibilityDelegate(ViewCompat.java:923) at android.support.v4.view.ViewCompat.setAccessibilityDelegate(ViewCompat.java:1343) at android.support.v7.widget.RecyclerView$Recycler

问题 I have a Horizontal RecyclerView: each item has an image loaded into it using the Facebook Fresco image library. However, while the correct image loads initially as it is scrolled a bit onto the screen, it disappears when the RecyclerView is scrolled further. In addition, there are issues where scrolling back and forth puts the wrong image in the wrong item (I assume this is an issue with recycling the viewholders). That said, the text you can see overlaying the items in the below screen shot

问题 I'm downloading data from an external db and populate arrays when the user scrolls down. I'm showing a footerview (loadmoreview) while the data is being downloaded. Where I'm currently stuck at is removing this footerview when the user got to the end of the list aka there is no more data to download. Download: private void DownloadUsersClassic(final String start, final String finish) { loadingMore = true; Log.i("DownloadUsersClassic", "started"); StringRequest postReq = new StringRequest

问题 I have a simple RecyclerView that uses ItemTouchHelper to both swipe and drag items. Everything worked fine until I needed to style the first and last items differently, so I needed to override the getItemViewType(int p) function in the adapter. After I did, the drag functionality stopped being fluent and always dropped the items after moving only one position up/down. This is my RecyclerView Adapter: public class CurrentStopsAdapter extends RecyclerView.Adapter<CurrentStopsAdapter.ViewHolder

问题 I am trying to implement a horizontal recycleview with right and left arrow indicators. So what happens is if one clicks the right arrow next item should appear and if one clicks the left arrow the previous item should appear and also at the end of the list the left arrow should disappear. I have no Idea how ti implement this. can someone help me out? Below is my Horizontal Recyclerview adapter. public class DialogRecyclerViewAdapter extends RecyclerView.Adapter<DialogRecyclerViewAdapter

问题 I have two views in my RecyclerView single item , two RelativeLayout s, at some point I am flipping both RelativeLayouts , I am rotating the LayoutA from 0 to 180 degree, and the same time I does rotating the LayoutB from -180 to 0 , so will get a flipping feel. It works perfect, but when there is no space in screen (ex: for the last item of RecyclerView ) then I am getting the weird effect, before starting this flip Animation LayoutB(which is hidden initially) expands and hides then

问题 I have recyclerview inside CollapsingToolbarLayout and I want it to be scrollable, but it is not. When I scroll, appbar is scrolling but not recyclerview. I tried different things, but it doesn't work. Here's my code: <android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/caves_content" android:layout_width="match_parent" android:layout_height="match_parent" android

问题 On that question ( how to implement a SetOnItemClickListener FirebaseRecyclerViewAdapter ) I learned how to use the FirebaseRecyclerViewAdapter to get the click of recycler view, perfect. Now I need to filter RecyclerView items made with the FirebaseRecyclerViewAdapter. In my business rule listo of the items and the user can filter them. If it was manual, a list adding the adapter I know, but as the FirebaseRecyclerViewAdapter is responsible to prepare / update the list, someone has a

问题 After previous debugging I've asserted that my database is indeed working correctly however even though it appears although I've set up the ReycleViewAdapter correctly the data is not displaying. I connect to my database in my main activity and pass the information to my fragment using an interface. This List<GlobalLists> data is then passed as a parameter to my Adapter for use in the onBind method; previously I was presenting this data in a list view but when I wanted live updates I had to