I have RecyclerView which contains Users and I need button "Add user" at the bottom of RecyclerView (should looks like last item of RecyclerView and must be scrollable).
What is the best way to achieve this? Add new itemViewType to my Adapter? Or maybe there is more simple way with CoordinatorLayout (to scroll view below RecyclerView after one was scrolled all items down, if it is possible)? Second way is really convenient to show scrollable headers with RecyclerView.
In this case you should add another ViewType with its ViewHolder. Here is a link to an answer where everything is explained https://stackoverflow.com/a/26245463/6329985
Related
I am building an android app with two recyclerviews, one with horizontal LinearLayoutManager and the other one with GridLayoutManager.
I want to allow the items recyclerviews to be dragged and dropped over a trash icon outside of the recyclerviews, obviously to delete the dragged item.
What I have done is:
Apply android:clipChildren in the parent of the two recyclerviews
Apply android:clipToPadding in the recyclerviews
This works perfectly in recyclerview with LinearLayoutManager. I can drag an item and drop it over an icon that is outside of the recylcerview.
I also works in the recyclerview with GridLayoutManager, but with a side effect. When I scroll in the grid recyclerview the scrolled items come out of the recyclerview.
At the ende of this GIF you can see the scrolling issue
So, Is there any way to allow dragging a recyclerview item outside of the recyclerview boundaries but preventing items comeout when scrolling?
Lots of thanks for your help and suggestions in advance
I tried putting the recyclerview with LinearLayoutManager on top of the recyclerview with GridLayoutManager, to hide the items which came out of the boundaries, but this make a strange behaivour when I drag an item, because the items are there yet, even they are hidden. I could make a GIF if needed
My last option is putting the trash icon inside of the recyclerview, as a header that appears when dragging an item, but I would prefer not do it that way
Finally what I have learnt is that you have two main options when face a drag and drop problem:
Easy way: Using the Android helper ItemTouchHelper
Hard way: Not using the helper and type all the code, using startDragAndDrop()
A scenario like this only can be solved by the hard way.
How can I implement this kind of UI, where we have two recyclerViews. One scrolls horizontally and the second one vertically. when the second one scrolls first one also scrolls top together.
I tried to implement using NestedScrollView, but I had to make second recyclerView height wrap content which causes recyclerView not recycle.
The second way that I tried was having one recyclerView. And adding horizontal recyclerview as a header. The problem was to save header recyclerview scroll state when navigation. And there had been crashes when loading next page (paging 3) in header recyclerView.
The question is: Is there any optimal solution for this kind of ui?
In cases, Like this, you don't have to use 2 RecyclerView and you also have to avoid using RecyclerView insideScrollView. instead of this you have to use one vertical RecyclerView with multitype view Adapter.
in this way, you are going to have 2 different ViewHolder one of them is a horizontal recyclerView (your top item) and the other one is your other items.
for learning multitype adapter you can see this:
How to create RecyclerView with multiple view types
and for a horizontal recyclerView inside a vertical RecyclerView you can see this :
https://medium.com/#ashishkudale/android-list-inside-list-using-recyclerview-73cff2c4ea95
you have to combine these 2.
I could not understand the meaning of "header" where you said "adding horizontal recyclerview as a header" but if you did what I told and the problem is the state of inner Horizontal recyclerView, I think probably you are calling setAdapter method of horizontal RecyclerView in OnBind() method of your vertical recycler view, it is a common mistake that I have seen in many tutorials.
if you have done this mistake , try to call setAdapter of your inner recyclerView in the constructor of its viewHolder and just update the list using yourHorizontalAdapter.notifyDataSetChanged() in onBind() method of VerticalRecylerView,
and if its not the case and your recyclerView is completely destroying see this link :How to save RecyclerView's scroll position using RecyclerView.State?
I was trying to design my screen as of same in Swiggy App. First, it has horizontal recycler or horizontal scroll view.
Second, it has tab bar which will stick on the top once we will scroll up. Third, it has a vertical recycler view or maybe listView showing restaurants.
So, if we have vertical listView, it's very easy to stick that tab bar(view, the second thing on screen) on the top.
You can see an example here: https://dzone.com/articles/creating-a-listview-parallax-effect-with-a-sticky
But in case of RecyclerView, it doesn't have any direct method addHeaderView. So how do we implement this with RecyclerView.
Use getItemViewType method and create three view holders for first, middle and last items.
RecyclerView with multiple view type
I want to achieve a specific pattern with a RecyclerView list by displaying a dynamic contact list based only on a single CardView.
The contact list can have several items in it. Like over 100. Every contact should be a single item and of course, all the area should be scrollable.
A solution would be to make a non-scrollabe ListView but the scroll would not be fluid as there are many items in the list.
Another solution would be to create a custom CardView item for the top, the middle and the bottom or even overlap all the CardView items with a negative margin.
I am wondering if there are some better solutions working with the RecyclerView?
I would try to use a nested recycler and intercept (steal) touch events with the child in the area it's in.
I know that is not a good practice put a ListView inside a ScrollView, that's why I want to figure out what kind of solution can handle this.
Look at the image below:
There's a block with some stuff on the top and there's a ListView below, and all of this scrolls with the entire layout. So, the question is:
How do I achieve this?
You should have just a ListView and set a headerView to this ListView to achieve what you want.
Use header View:
ListView below scrollview in Android
or Sticky List Headers if you want to make them stick on top of the listview:
https://github.com/emilsjolander/StickyListHeaders
or use different ViewTypes with your own Adapter implementation:
Listview: Only one list item with multiple textviews
Why do you assume the reviews shown there are in a ListView? To me they just look like a handful of custom Views stacked on top of each other, not an actual ListView.