I found out how to preview a list item by using
tools:listitem="#layout/my_item_layout"
Android studio however is previewing the recyclerview as a vertical list. Is there a way to tell Android Studio to display the layout preview in a horizontal fashion using LinearLayoutManager?
Add a LayoutManager and set a horizontal orientation.
Here an example:
<android.support.v7.widget.RecyclerView
android:id="#+id/homesRecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layoutManager="android.support.v7.widget.LinearLayoutManager"
android:layout_centerVertical="true"
/>
If you are using androidx libraries:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/homesRecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
android:layout_centerVertical="true"
/>
Just use in your layout the app:layoutManager and the android:orientation attributes and add them also using the tools namespace.
Something like:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:orientation="horizontal"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:listitem="#layout/ly_item"
tools:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:orientation="horizontal"
../>
the accepted answer works accurately. For androidx just use this in your recyclerView
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
android:orientation="horizontal"
AndroidX
<androidx.recyclerview.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:layoutManager="android.support.v7.widget.LinearLayoutManager"
tools:listitem="#layout/item"
tools:orientation="horizontal"/>
[Read more here]
Otherwise you can use in java file :
mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, true));
Related
How to set RecyclerView layoutManager from XML?
<android.support.v7.widget.RecyclerView
app:layoutManager="???"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
As you can check in the doc:
Class name of the Layout Manager to be used.
The class must extend androidx.recyclerview.widget.RecyclerViewView$LayoutManager and have either a default constructor or constructor with the signature (android.content.Context, android.util.AttributeSet, int, int)
If the name starts with a '.', application package is prefixed. Else, if the name contains a '.', the classname is assumed to be a full class name. Else, the recycler view package (androidx.appcompat.widget) is prefixed
With androidx you can use:
<androidx.recyclerview.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager">
With the support libraries you can use:
<android.support.v7.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="android.support.v7.widget.GridLayoutManager" >
Also you can add these attributes:
android:orientation = "horizontal|vertical": to control the orientation of the LayoutManager (eg:LinearLayoutManager)
app:spanCount: to set the number of columns for GridLayoutManager
Example:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
app:spanCount="2"
...>
or:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
android:orientation="vertical"
...>
You can also add them using the tools namespace (i.e. tools:orientation and tools:layoutManager) and then it only impacts the IDE preview and you can continue setting those values in code.
if you want use it with LinearLayoutManager
<android.support.v7.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="android.support.v7.widget.LinearLayoutManager" >
that equivalent to
LinearLayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(mLayoutManager);
And I came here looking for androidx version though it was pretty easy to figure out, here it is
LinearLayoutManager:
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
Example:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
GridLayoutManager:
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
Example:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:spanCount="2"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"/>
As you can see in examples above you can control the orientation from within xml using
android:orientation="vertical"
and
android:orientation="horizontal"
And to set the number of columns for GridLayoutManager using
app:spanCount="2"
The most common ones that I use are:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:listitem="#layout/grid_item"
android:orientation="vertical" app:spanCount="3"/>
And:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:listitem="#layout/grid_item"
android:orientation="vertical"/>
It's recommended to set listitem , so that you'd see how it could look in the preview of the layout editor.
If you want to have the order reversed though, I think you have to do it in code instead, and use "tools" in XML if you really want to see something...
This worked for me - just add app:layoutManager="LinearLayoutManager" and you're good to go
<android.support.v7.widget.RecyclerView
android:id="#+id/recordItemList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:clipToPadding="false"
android:scrollbars="none"
app:layoutManager="LinearLayoutManager"
app:stackFromEnd="true"
app:reverseLayout="true"/>
You can set the layout manager for recyclerview like this, app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
Example
implementation 'com.android.support:recyclerview-v7:28.0.0'
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:layoutManager="android.support.v7.widget.LinearLayoutManager"
/>
layoutManager can be android.support.v7.widget.LinearLayoutManager, android.support.v7.widget.GridLayoutManager
[Read more here]
For my app I am using a RecyclerView inside a ScrollView where the RecyclerView has a height based on its content using this library. Scrolling is working but it's not working smoothly when I scroll over the RecyclerView. When I scroll over the ScrollView itself it is scrolling smoothly.
The code I am using to define the RecyclerView:
LinearLayoutManager friendsLayoutManager = new LinearLayoutManager(getActivity().getApplicationContext(), android.support.v7.widget.LinearLayoutManager.VERTICAL, false);
mFriendsListView.setLayoutManager(friendsLayoutManager);
mFriendsListView.addItemDecoration(new DividerItemDecoration(getActivity().getApplicationContext(), null));
The RecyclerView in the ScrollView:
<android.support.v7.widget.RecyclerView
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:id="#+id/friendsList"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
Try doing:
RecyclerView v = (RecyclerView) findViewById(...);
v.setNestedScrollingEnabled(false);
As an alternative, you can modify your layout using the support design library. I guess your current layout is something like:
<ScrollView >
<LinearLayout >
<View > <!-- upper content -->
<RecyclerView > <!-- with custom layoutmanager -->
</LinearLayout >
</ScrollView >
You can modify that to:
<CoordinatorLayout >
<AppBarLayout >
<CollapsingToolbarLayout >
<!-- with your content, and layout_scrollFlags="scroll" -->
</CollapsingToolbarLayout >
</AppBarLayout >
<RecyclerView > <!-- with standard layoutManager -->
</CoordinatorLayout >
However this is a longer road to take, and if you are OK with the custom linear layout manager, then just disable nested scrolling on the recycler view.
Edit (4/3/2016)
The v 23.2 release of the support libraries now includes a factory “wrap content” feature in all default LayoutManagers. I didn’t test it, but you should probably prefer it to that library you were using.
<ScrollView >
<LinearLayout >
<View > <!-- upper content -->
<RecyclerView > <!-- with wrap_content -->
</LinearLayout >
</ScrollView >
I only needed to use this:
mMyRecyclerView.setNestedScrollingEnabled(false);
in my onCreateView() method.
Thanks a lot!
You can use this way either :
Add this line to your recyclerView xml file :
android:nestedScrollingEnabled="false"
Or in java code :
RecyclerView.setNestedScrollingEnabled(false);
Hope this helped .
You can try with both the ways with XML and programmatically. But the issue you may face is (below API 21) by doing it with XML will not work . So it's better to set it programmatically in your Activity / Fragment.
XML code:
<android.support.v7.widget.RecyclerView
android:id="#+id/recycleView"
android:layout_width="match_parent"
android:visibility="gone"
android:nestedScrollingEnabled="false"
android:layout_height="wrap_content"
android:layout_below="#+id/linearLayoutBottomText" />
Programmatically:
recycleView = (RecyclerView) findViewById(R.id.recycleView);
recycleView.setNestedScrollingEnabled(false);
Using Nested Scroll View instead of Scroll View solved my problem
<LinearLayout> <!--Main Layout -->
<android.support.v4.widget.NestedScrollView>
<LinearLayout > <!--Nested Scoll View enclosing Layout -->`
<View > <!-- upper content -->
<RecyclerView >
</LinearLayout >
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
I had similar issues (I tried to create a nested RecyclerViews something like Google PlayStore design). The best way to deal with this is by subclassing the child RecyclerViews and overriding the 'onInterceptTouchEvent' and 'onTouchEvent' methods. This way you get complete control of how those events behave and eventually scrolling.
Replacing ScrollView with NestedScrollView resulted into smooth scrolling to the bottom.
Summary of all answers (Advantages & Disadvantages)
For single recyclerview
you can use it inside Coordinator layout.
Advantage - it will not load entire recyclerview items. So smooth loading.
Disadvantage - you can't load two recyclerview inside Coordinator layout - it produce scrolling problems
reference - https://stackoverflow.com/a/33143512/3879847
For multiple recylerview with minimum rows
you can load inside NestedScrollView
Advantage - it will scroll smoothly
Disadvantage - It load all rows of recyclerview so your activity open with delay
reference - https://stackoverflow.com/a/33143512/3879847
For multiple recylerview with large rows(more than 100)
You must go with recyclerview.
Advantage - Scroll smoothly, load smoothly
Disadvantage - You need to write more code and logic
Load each recylerview inside main recyclerview with help of multi-viewholders
ex:
MainRecyclerview
-ChildRecyclerview1 (ViewHolder1)
-ChildRecyclerview2 (ViewHolder2)
-ChildRecyclerview3 (ViewHolder3)
-Any other layout (ViewHolder4)
Reference for multi-viewHolder - https://stackoverflow.com/a/26245463/3879847
Kotlin
Set isNestedScrollingEnabled to false for every RecyclerView that is under the scrolling view
val recyclerView = findViewById<RecyclerView>(R.id.recyclerView)
recyclerView.isNestedScrollingEnabled = false
Using XML Layout
<android.support.v7.widget.RecyclerView
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:id="#+id/friendsList"
android:layout_width="match_parent"
android:nestedScrollingEnabled="false"
android:layout_height="wrap_content" />
Every answer is same here. and i already used what everyone is suggested. Then i found that NestedScrollView is faster then ScrollView so
use
<androidx.core.widget.NestedScrollView
Instead of
<ScrollView
And use this as usual
recycleView.setNestedScrollingEnabled(false);
If you are using VideoView or heavy weight widgets in your childviews keep your RecyclerView with height wrap_content
inside a NestedScrollView with height match_parent
Then scrolling will work smooth as perfectly as you want it.
FYI,
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:nestedScrollingEnabled="false"
android:layout_height="wrap_content"
android:clipToPadding="false" />
</android.support.v4.widget.NestedScrollView>
Thanks Micro this was from your hint!
karthik
you can use ScrollView as a parent and NestedScrollView as a child.
like this:-
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/CL1">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/eventRV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/CL1" />
</androidx.core.widget.NestedScrollView>
XML code:
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false" />
</android.support.v4.widget.NestedScrollView>
in java code :
recycleView = (RecyclerView) findViewById(R.id.recycleView);
recycleView.setNestedScrollingEnabled(false);
Or you can just set android:focusableInTouchMode="true" in your recycler view
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
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"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintlayout_main"
android:layout_width="match_parent"
android:layout_height="#dimen/layout_width_height_fortyfive"
android:layout_marginLeft="#dimen/padding_margin_sixteen"
android:layout_marginRight="#dimen/padding_margin_sixteen"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent">
<TextView
android:id="#+id/textview_settings"
style="#style/textviewHeaderMain"
android:gravity="start"
android:text="#string/app_name"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
</android.support.constraint.ConstraintLayout>
<android.support.constraint.ConstraintLayout
android:id="#+id/constraintlayout_recyclerview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/padding_margin_zero"
android:layout_marginTop="#dimen/padding_margin_zero"
android:layout_marginEnd="#dimen/padding_margin_zero"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/constraintlayout_main">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerview_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.constraint.ConstraintLayout>
This code is working for in ConstraintLayout android
Simple Add this line into your JAVA class
list.setNestedScrollingEnabled(false);
I myself had this issue, there is a recycler view within a scrollview and the scroll doesn't seem to be smooth. The cause for my issue was having the scrollview on top of the recycler view which was not needed for my requirement. So after I removed the scrollview and added the android:scrollbars="vertical" for recycler view, the scrolling was smooth.
After 3 days of research, I solved smooth scroll issue in my project.
The problem is <layer-list> drawable set in the background of item_user.xml file so it takes GPU time for rendering that's why scrolling not smooth. So please dont use complex <layer-list> drawable in the background of adapter item.
My problem is solved by above solution, below option is not useful for me
setNestedScrollingEnabled
setHasFixedSize
setItemViewCacheSize
I wrote an application and home page is LinearLayout and is in Fragment. In this LinearLayout there are two RecyclerViews and SearchBar etc. I want to scroll whole activity. I spent 2 days for it but cannot succeed. How can I do that in easy way? There are lots of adapters and connections in that LinearLayout. How can I achieve that without broke any code.
I want to scroll whole activity.
Thanks in advance.
Set Scroll/NestedScrollView as a parent view in xml to scroll whole layout.
Add below attribute in recycler view to stop recycler scroll:
android:overScrollMode="never"
Try below code:
<android.support.v4.widget.NestedScrollView
android:id="#+id/navigation_nested"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:overScrollMode="never">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="#dimen/margin_15">
<TextView
android:id="#+id/video_tv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/margin_15"
android:drawableLeft="#drawable/ic_video_tutorial"
android:drawablePadding="#dimen/margin_20"
android:fontFamily="#font/poppins"
android:paddingLeft="#dimen/text_15"
android:text="#string/videos"
android:textColor="#color/blackTextColor"
android:textSize="#dimen/text_15" />
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:overScrollMode="never" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
You just add this line:
//java
yourRecyclerView.setLayouManager(new LinearLayoutManager(this));
//kotlin
yourRecyclerView.layoutManager = LinearLayoutManager(this)
or from xml:
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
Notice that there is not only LinearLayoutManager. If you are using a Grid RecyclerView than you might want to use GridLayoutManager
I solved the problem.
Just write ScrollView over the LinearLayout
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout>
.....
</LinearLayout>
</ScrollView>
I have viewpager2 with 4 fragments. 3 of them have SwipeRefreshLayout to refresh async task data in particular fragments.
When using SwipeRefreshLayout and viewpager2 the gestures are somehow conflicting. ie. swype down to refresh makes screen so sensitive, that a little move to left or right also makes page screen change and refresh icon is freezing or the processis unfinished.
my goal is to make gestures independent, so for example when i start to swype down SwipeRefreshLayout, then vp2 is disabled so it it is not interfere with SRL.
This was not happening when using standard viewpager with SwipeRefreshLayout, gestures were not conflicting, but I need to use "setUserInputEnabled" in VP2. any idea how to mitigate this behaviour and should i mitigate it at SwipeRefreshLayout level or within viepager2 code?
It looks problem is resolved when I added to my scrollview:
android:nestedScrollingEnabled="true"
Final code of the fragment layout then looks like this:
<?xml version="1.0" encoding="utf-8"?>
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/some_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/activity_background"
tools:context="some_fragment_name">
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:nestedScrollingEnabled="true" <<<<------ HERE the change
android:id="#+id/some_id">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/sensors_relative_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="some_package_name">
<TextView
android:id="#+id/some_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:background="#android:color/white"
android:gravity="center"
android:textColor="#android:color/black"
android:textStyle="bold"
android:layout_marginTop="5sp"
android:layout_marginLeft="5sp"
android:layout_marginRight="5sp"
android:textSize="20sp" />
...
EDIT: Update as 1.1.0 has been released on July 22, 2020
The problem was due to a bug in SwipeRefreshLayout, which has been resolved by Version 1.1.0. To use it, just upgrade to that version by adding the following line in the dependencies of your Gradle file:
implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
See issueTracker for the bug history: [ViewPager2] SwipeRefreshLayout should not ignore requestDisallowInterceptTouchEvent. Note that there's also a workaround described there (extending SwipeRefreshLayout and overriding "requestDisallowInterceptTouchEvent").
If you have RecyclerView in SwipeRefreshLayout you need to wrap RecyclerView in FrameLayout aur any other layout and set nestedScrollingEnabled="true" on Layout not set on RecyclerView.
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/swipeRefreshLayout"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:nestedScrollingEnabled="true">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/media_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</FrameLayout>
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
How to set RecyclerView layoutManager from XML?
<android.support.v7.widget.RecyclerView
app:layoutManager="???"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
As you can check in the doc:
Class name of the Layout Manager to be used.
The class must extend androidx.recyclerview.widget.RecyclerViewView$LayoutManager and have either a default constructor or constructor with the signature (android.content.Context, android.util.AttributeSet, int, int)
If the name starts with a '.', application package is prefixed. Else, if the name contains a '.', the classname is assumed to be a full class name. Else, the recycler view package (androidx.appcompat.widget) is prefixed
With androidx you can use:
<androidx.recyclerview.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager">
With the support libraries you can use:
<android.support.v7.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="android.support.v7.widget.GridLayoutManager" >
Also you can add these attributes:
android:orientation = "horizontal|vertical": to control the orientation of the LayoutManager (eg:LinearLayoutManager)
app:spanCount: to set the number of columns for GridLayoutManager
Example:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
app:spanCount="2"
...>
or:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
android:orientation="vertical"
...>
You can also add them using the tools namespace (i.e. tools:orientation and tools:layoutManager) and then it only impacts the IDE preview and you can continue setting those values in code.
if you want use it with LinearLayoutManager
<android.support.v7.widget.RecyclerView
xmlns:app="http://schemas.android.com/apk/res-auto"
app:layoutManager="android.support.v7.widget.LinearLayoutManager" >
that equivalent to
LinearLayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(mLayoutManager);
And I came here looking for androidx version though it was pretty easy to figure out, here it is
LinearLayoutManager:
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
Example:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>
GridLayoutManager:
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
Example:
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:spanCount="2"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"/>
As you can see in examples above you can control the orientation from within xml using
android:orientation="vertical"
and
android:orientation="horizontal"
And to set the number of columns for GridLayoutManager using
app:spanCount="2"
The most common ones that I use are:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:listitem="#layout/grid_item"
android:orientation="vertical" app:spanCount="3"/>
And:
<androidx.recyclerview.widget.RecyclerView
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:listitem="#layout/grid_item"
android:orientation="vertical"/>
It's recommended to set listitem , so that you'd see how it could look in the preview of the layout editor.
If you want to have the order reversed though, I think you have to do it in code instead, and use "tools" in XML if you really want to see something...
This worked for me - just add app:layoutManager="LinearLayoutManager" and you're good to go
<android.support.v7.widget.RecyclerView
android:id="#+id/recordItemList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:clipToPadding="false"
android:scrollbars="none"
app:layoutManager="LinearLayoutManager"
app:stackFromEnd="true"
app:reverseLayout="true"/>
You can set the layout manager for recyclerview like this, app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
Example
implementation 'com.android.support:recyclerview-v7:28.0.0'
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:layoutManager="android.support.v7.widget.LinearLayoutManager"
/>
layoutManager can be android.support.v7.widget.LinearLayoutManager, android.support.v7.widget.GridLayoutManager
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