NestedScrolling | NestedScrollView within NestedScrollView

I know it's old but I really tired from searching and trying a lot of solutions from here or from outside web pages

the problem is: when to invoke data from API to a Vertical RecyclerView it loads all data without any consideration to Pagination

which work successfully with the horizontal Recycler view

and without any scrolling or screen touch

NestedScroll View contain 2 Recycler in the following order

NestedScrollView as parent
HorizontalRecyclerView as child
VerticalRecyclerView as child

my XML file :

I have an Activity with WebView and my own AppBarLayout. I want to implement hiding/showing the AppBarLayout with animation when scrolling the WebView, like in the Google Chrome app.

I tried different ways.

• ObservableWebView, but it doesn't work correctly, it doesn't always show AppBar, especially if the page is short.

• ConstraintLayout with animations. Something similar, but still not the same as in Google Chrome.

• Coordinator layout. This is the best variant, I think. But it have some bugs.

I have wrote the code of layout like this:

I have an app with two activities extends same abstract - one with WebView, another with ViewPager with TabLayout and RecyclerViews - and on this level I've implemented "shared" showing/hiding toolbar with scroll/fling feature:

app:layout_scrollFlags="scroll|snap|enterAlways"

WebView is "pushing out" Toolbar just like RecyclerView under any tab in ViewPager (keeping TabLayout visible), in both cases any scroll to top brings back Toolbar. Just like on this example:

Now I've to change this behavior - Toolbar should be hidden when user is NOT on top of page, so: any scroll to bottom should hide Toolbar if present and only (scroll to top && getScrollY()<=0) should make Toolbar enter:

I've borrowed GIFs from THIS guide, which is suggesting (all other too) that my desired behavior is default with just scroll flag (and possibly snap). So I've removed enterAlways and my "native" Activity started to work as intended out-of-the-box. WebView - no change at all...

I'm suspecting that this bug is caused by my NestedWebView, I'm currently using THIS one. So I've tried to drop-in replace this class with these:

marshi - not scrollable webview content (toolbar shows/hides)

takahirom - toolbar enters even when 1px scroll in up direction almost immediate (kind of snap behavior, but during touch)

hanks - no nested scrolling (fixed toolbar), also with uncommented setNestedScrollingEnabled(true); line

How to achieve second GIF Toolbar behavior cooperating with WebView?

i have this issue where my recyclerview does not do nestedscrolling on api 19 (lollipop) ...on latest version of android its ok. using following dependency: com.android.support:design:26.1.0

and what i have created is a recyclerview that should have a sticky header. the header is in a cardview and the list items are below the cardview. it looks like this:

detailscreen.xml:

I need to add data to ListView by adapter. Adapter has some data. As you can see here, the size of ArrayList is 417.But when I open the activity where the ListView is, I don't see anything here. Here's the code of adapter:

I have a code here which contains of a coordinator layout. Inside that coordinator layout, there is an appbar layout and a nested scrollview beneath it.I want the appbar layout(map) to be still even when nestedscroll view scrolls.I have images to explain my thoughts. Initial stage, stage two. Notice that the map remains still while only nested scroll view scrolls and finally, nested scroll view overlaps entire map fragment.

In Android, Image view should disapper before scroll is started, but works reversely. When I'm holding my finger on the screen if I scroll up and down before Imageview is disapper, scroll view is starting to scroll down, then Imageview starts to close. Here is my code.

I want to create a recyclerview with nestedscrolling enabled inside every item. For that I have craeted custm recyclerview used this tutorial,

https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a

Here is the code,

I have a ScrollView, which contains a vertical LinearLayout. This is a place, where I add some amount of Views called "Section". "Section" is a LinearLayout, which contains a TextView and `RecyclerView.