I have two layers of Recycler views, Main Recycler view contains dynamic Recycler views as items.
So, I need to click and assertion text inside items of inner Recycler views in Android Espresso, or any ideas.
I think it's must easier if I test inner recycler views separately
Related
I'm trying to design a row list using RecyclerView like Android TV ↳ android.support.v17.leanback.widget.ListRow. I'm able to design list with title but not row list. Can anyone help me?
Please Follow this Link for
Recycer view like play store
Use Two RecyclerView Outer Recycler is vertical and Second horizontal recycler is item of first recycler View
All you need is to call mInnerRecycler.setNestedScrollingEnabled(false); on your inner RecyclerViews and use Horizontal scrollview as root of mInnerRecyclerView
Explanation:
RecyclerView has support for nested scrolling introduced in API 21 through implementing the NestedScrollingChild interface. This is a valuable feature when you have a scrolling view inside another one that scrolls in the same direction and you want to scroll the inner View only when focused.
In any case, RecyclerView by default calls RecyclerView.setNestedScrollingEnabled(true); on itself when initializing. Now, back to the problem, since both of your RecyclerViews are within the same ViewPager that has the AppBarBehavior, the CoordinateLayout has to decide which scroll to respond to when you scroll from your inner RecyclerView; when your inner RecyclerView's nested scrolling is enabled, it gets the scrolling focus and the CoordinateLayout will choose to respond to its scrolling over the outer RecyclerView's scrolling. The thing is that, since your inner RecyclerViews don't scroll vertically, there is no vertical scroll change (from the CoordinateLayout's point of view), and if there is no change, the AppBarLayout doesn't change either.
In your case, because your inner RecyclerViews are scrolling in a different direction, you can disable it, thus causing the CoordinateLayout to disregard its scrolling and respond to the outer RecyclerView's scrolling.
Notice:
The xml attribute android:nestedScrollingEnabled="boolean" is not intended for use with the RecyclerView, and an attempt to use android:nestedScrollingEnabled="false" will result in a java.lang.NullPointerException so, at least for now, you will have to do it in code.
RecyclerView can check View Type for return header or item. And use layout manager for manage how to item scrolling direction.
RecyclerView (vertical scrolling)
- item -> RecyclerView (horizontal scrolling) check view type is header or item with condition example : is object has type header
Ref : Google play store like interface using recycler view
My question is why do wrap recycler view into nested scroll view
Does it relate to smooth scroll of recycler view
Actually i am creating app which fetch 2 images and the scroll of recycler view in that is very slow so should i wrap it into nested scroll view for smooth flow or compress images and store them
I am a bit confused on this topic ?
Wrapping Recycler view in scroll view is like a two sided blade. You should be careful about using it.
because when you use it, the recycler view will loose its advantage of recycling unneeded rows so at the same time you will have references to all those view, so if you have rows with many graphical item it will make problem for slow devices.
If you see putting the recycler view inside another nested scrollview solved your speed problem, It means you do a mess in the adapter of recycler view.
Do not do any heavy process in adapters and onBindViewHolder
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
Hi I am exploring recycler view of android.I want to inflate a fragment inside the each item of recycler view.I want to change the layout of item in recycler view by clicking on item.Any Ideas on how to approach this problem
hmm... recyclerview is not for that, is it for recycle views ^^, if you want to dislpays fragments in a 'list' you can create a class extending LinearLayout which will display your fragments.
In my Layout there are some widgets are there in above to the list view. When i scroll through the list view i want to scroll my layout fully.Please any one can suggest the answer
Put the widgets that are presently above the ListView inside the ListView, either by using addHeaderView(), my MergeAdapter, or your own custom Adapter class. The, those widgets will scroll along with everything else in the ListView.