Develop Reference

NestedScrollView smooth scroll to the top and to a view inside

First I need to scroll my NestedScrollView to the top, but smoothScrollTo(0, 0) doesn't work for me (page just jumping a bit). Second I wonder how can I scroll to a certain view inside my NestedScrollView. API 27, Support 27.0.2.
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<data/>
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/refresh"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/PageBackground"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical"
android:paddingBottom="#dimen/indent_page_bottom">
...
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</layout>

Try using fling to achieve smooth scrolling :
nestedScrollView.fling(0);
nestedScrollView.smoothScrollTo(0, 0);

I had a nestedscrollviewand inside it there is recyclerview. I tried smoothScrollTo(0, nsv_main.top). Didn't work. I gave an id to nestedscrollview like below
<android.support.v4.widget.NestedScrollView
android:id="#+id/nsv_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/PageBackground"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical"
android:paddingBottom="#dimen/indent_page_bottom">
...
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
and gave nsv_main.scrollY = 0 in my click event. It worked, even though its not a smooth scroll.

Add View at top of recycler view

In my android application, there is a slideshow at top of page and below it, there is a recycler view, my problem is how to add the slideshow above recycler view in a way that slideshow can be scrolled with recycler view. I tried adding a scroll view as a parent but it seems that recycler lost the recycling power.
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ececec">
<android.support.v4.view.ViewPager
android:id="#+id/ChefFragmentViewPager"
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_alignParentTop="true" />
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/ChefFragmentViewPager"
android:background="#ececec"
android:scrollbars="none" />
</RelativeLayout>

Try using NestedScrollView instead of ScrollView and also set recyclerView.setNestedScrollingEnabled(false); programmatically.

Try this code and let me know if it helped you or not:
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ececec">
<android.support.v4.view.ViewPager
android:id="#+id/ChefFragmentViewPager"
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_alignParentTop="true" />
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/ChefFragmentViewPager"
android:background="#ececec"
android:scrollbars="none" />
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>

how to scroll RecyclerView in scrollview

how to scroll all above RecyclerView in scrollview
I have to implement RecyclerView in scrollview show as below code, but not scroll RecyclerView.
please give answer
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/horizontalScrollView"
android:layout_marginTop="10dp">
<RelativeLayout...
<android.support.v7.widget.RecyclerView
android:id="#+id/rvpouch"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:nestedScrollingEnabled="false"
android:layout_below="#+id/textView3">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>
</ScrollView>

Don't use RecyclerView inside ScrollView. Use NestedScrollView instead of ScrollView.
NestedScrollView is just like ScrollView, but it supports acting
as both a nested scrolling parent and child on both new and old
versions of Android. Nested scrolling is enabled by default.
For Example:
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="blocksDescendants">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_one"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false">
</android.support.v7.widget.RecyclerView>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_two"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false">
</android.support.v7.widget.RecyclerView>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_three"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
Use attribute android:nestedScrollingEnabled="false" for smooth scrolling.

Use NestedScrollView instead of scroll view and set
recyclerView.setNestedScrollingEnabled(false);

Following code snippet will help you to implement scrolling using ScrollView of RecyclerView
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbarSize="3dp"
android:scrollbarThumbVertical="#drawable/scrollbar_black">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:id="#+id/rlFiltersSearchEvent"
android:layout_width="match_parent"
android:layout_height="250dp"
android:background="#drawable/action_bar_gradient">
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rvListOfEventsMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/fab_margin"
android:layout_below="#+id/rlFiltersSearchEvent"
android:nestedScrollingEnabled="false"
android:scrollbars="none" />
</RelativeLayout>
</ScrollView>
Hope it helps

How can I add horizontal, vertical RecyclerView inside a vertical scroll

I want to add vertical as well as horizontal RecyclerViews inside a vertical scrollview.
Is it possible to have multiple recycler views inside vertcal scrollview
what control I need to use.
Also RecyclerView nested in one ScrollView is not good practice so can anybody tell me whats right way to do it can I add RecyclerView inside another RecyclerView or I need to use horizontal and vertical scrollview only to achieve this.

You can do something like this for getting two RecyclerView nested in one ScrollView which is by the way not recommended.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/tools"
android:focusableInTouchMode="true"
android:padding="8dp"
android:background="#drawable/old_map"
android:layout_height="match_parent">
<ScrollView
android:layout_below="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="600dp">
<view
android:scrollbarSize="6dp"
android:id="#+id/recent_post"
class="android.support.v7.widget.RecyclerView"
android:layout_width="match_parent"
android:layout_height="400dp"
android:scrollbars="vertical" />
<view
android:scrollbarSize="6dp"
android:id="#+id/recent_post"
class="android.support.v7.widget.RecyclerView"
android:layout_width="match_parent"
android:layout_height="400dp"
android:scrollbars="horizontal" />
</RelativeLayout>
</ScrollView>
</RelativeLayout>

I don't namely know what kind of scrolling do you want but it is possible to use both scrolls at the same time:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<HorizontalScrollView
android:id="#+id/HorizontalScrollView02"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<!-- HERE YOUR CODE-->
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
</ScrollView>

Allow user to "scroll past" ViewPager in a LinearLayout.

So I have a linear layout with two elements in it a ViewPager and a RecyclerView. Currently when the user scrolls down the ViewPager stays at the top of the page. Preferably the what would happen is that the user would scroll past the ViewPager so that the RecyclerView took up the page. How can I make this happen?
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
style="#style/AppTheme"
android:orientation="vertical"
android:layout_height="match_parent"
tools:context=".ListEventsActivity">
<android.support.v4.view.ViewPager
android:id="#+id/fragment_pager"
android:layout_height="300dp"
android:layout_weight="1"
android:layout_width="match_parent"/>
<android.support.v7.widget.RecyclerView
android:layout_weight="1"
android:id="#+id/user_recycler"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

Use this, you need to set the height to 0dp while applying
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
style="#style/AppTheme"
android:orientation="vertical"
android:layout_height="match_parent"
tools:context=".ListEventsActivity">
<android.support.v4.view.ViewPager
android:layout_weight="0.7"
android:id="#+id/fragment_pager"
android:layout_height="0dp"
android:layout_width="match_parent"/>
<android.support.v7.widget.RecyclerView
android:layout_weight="0.7"
android:id="#+id/user_recycler"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="0dp" />
</LinearLayout>