android-recyclerview

问题 tried to import android.support.v7.widget.RecyclerView, but it didn't work, added also compile 'com.android.support:recyclerview-v7:23.1.1' to build.gradle, but it didn't help either 回答1: you can also add lib/dependencies from android studio menu. click on " Build " -> " Edit Libraries and Dependencies ". then click on " + " button on right side. search any lib. example search "recycler" then select " com.android.support:recyclerview-v7:x.x.x " from list and your done. 回答2: Open build.gradle

问题 I have a fragment with 2 cardviews with multiple controls within. below the second cardview I have a recyclerview , this works perfect . the problem is that the recyclerview starts very bottom of the screen , and scroll the recylcerview is very small . previously used a listview, and this kept me fit your content and thus make scroll across the screen at once, but with recylclerview can not. How to make when I scroll in the recyclerview, controls go up like parallax effect? EDIT: more clear,

问题 Having a problem when scrolling RecyclerView after scrolling down and up. The idea is to change elements color, but when I scroll down everything is great and when the scroll goes up - the elements, which are shouldn't be colored are changing color. Here's my adapter: public class NotificationsAdapter extends RecyclerView.Adapter<NotificationsAdapter.ViewHolder> { private NotificationData notificationData; private Context mContext; private ArrayList<NotificationData> infromationList = new

问题 RecyclerView is added into v7 support library since Android API 22 officially. And many people said that it is a enhancement over ListView and many brief introductions to the usage of it were posted over the internet. But most of these articles are very simple, shallow and hollow. The enhancement is just RecyclerView.ViewHolder , RecyclerView.ItemAnimator or RecylerView.SmoothScroller ? Did the recycling and reuse mechanism of items' views during scrolling differ from the ListView 's? And

问题 I found similar issue Facebook Native ads in recycler view android , but had some problems with integration with Custom Ad. For the first I tried to describe NativeAdsManager : @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); manager = new NativeAdsManager(getActivity(), "892769720837476_892772047503910", 5); manager.setListener(this); manager.loadAds(); nativeAd = new NativeAd(getActivity(), "892769720837476

问题 I have an activity with coordinator layout.inside activity there is a fragment with Recycler view and float button.how can I show/hide float button when Scroll Recycler view and avoid to use fab behavior?! in activity layout: CoordinatorLayout----->AppBarLayout---->Toolbar and FrameLayout and Bottom bar view in fragment layout: RelativeLayout---->Recycler view and float button I want to implement something like Google+ home page. how can I implement this scenario? Temporary I used this

问题 I'm using Paging Library to load data from network using ItemKeyedDataSource . After fetching items user can edit them, this updates are done inside in Memory cache (no database like Room is used). Now since the PagedList itself cannot be updated (discussed here) I have to recreate PagedList and pass it to the PagedListAdapter . The update itself is no problem but after updating the recyclerView with the new PagedList , the list jumps to the beginning of the list destroying previous scroll

问题 After a lot of searching, I know its possible with regular adapter, but I have no idea how to do it using Paging Library. I don`t need code just a clue. Example 回答1: To add separators, you essentially have 2 options: View-based, you explicitly include separators as an 'item' in the list and define a new viewtype for those separators. Allows the list to re-use the separator views but means you need to take the separators into account when defining the data. Data-based, each item actually has a

问题 setOnScrollListener is deprecated. Reading the docs from here it tells to Use addOnScrollListener(OnScrollListener) and removeOnScrollListener(OnScrollListener) . What is the proper way to add and remove OnScrollListener ? Do i need to use removeOnScrollListner in onPause and set it up again using addOnScrollListener in onResume ?? 回答1: addOnScrollListener(OnScrollListener) means you can add more than one listener to a RecyclerView. removeOnScrollListener(OnScrollListener) means you can

问题 I'm using a very helpful example here to show a RecyclerView and a GridLayoutManager to show a grid with a header. It looks pretty good, but my graphic designer wants the header item to take up the full width of the RecyclerView. Right now there is padding. When I set up the GridLayoutManager I add in padding (which I still want for the other grid items): [it's using Xamarin C#] var numColumns = myListView.MeasuredWidth / tileSizeMax; myGridView.SetPadding(tilePadding, tilePadding,