Develop Reference

Hide ActionBar on ListView scroll contained in a Fragment within a ViewPager

I want to hide the ActionBar on ListView scroll.
The official documentation suggests we use this pattern to do so:
<android.support.design.widget.CoordinatorLayout
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">
<! -- Your Scrollable View -->
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
...
app:layout_scrollFlags="scroll|enterAlways">
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
I can't, however, use this pattern since my "Scrollable view" is a ListView inside a Fragment that is rendered inside the ViewPager. I use the following code in my app:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.x.y.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
style="#style/AppTabLayout"
android:id="#+id/tabs"
app:tabTextAppearance="#style/AppTabTextAppearance"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="#dimen/fab_margin"
android:src="#mipmap/ic_add_white_24dp" />
</android.support.design.widget.CoordinatorLayout>
I've tried putting the ViewPager inside the AppBarLayout, and the Toolbar and TabLayout in a CollapsibleToolbarLayout. However, if I do that, the ViewPager layout isn't even shown and the ActionBar is permanently hidden.
What do I do?

CoordinatorLayout doesn't work with listview. So either replace the listview with a recyclerview (which i would highly recommend) or put your listview inside a NestedScrollView. The xml code you posted is ok. If any of these is not working then post your fragment's xml code and hit me up again

Toolbar doesn't hide on list scroll

So, I have this main activity layout using CoordinatorLayout to display a toolbar and tabs below it:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="0dp"
local:layout_scrollFlags="scroll|enterAlways"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:elevation="4dp"
local:tabMode="fixed"
local:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:foreground="#drawable/header_shadow"
local:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Then I have 2 fragment layouts, each for each of the 2 tabs I'll have. One fragment displays a ListView on its content:
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:foreground="#drawable/header_shadow"
tools:context=".StationsFragment">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh_layout"
android:layout_height="wrap_content"
android:layout_width="match_parent">
<ListView
android:id="#+id/stations_listview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.SwipeRefreshLayout>
</FrameLayout>
I want my toolbar to hide when I scroll the listview above, and it should be ok with the code I have, at least from what I read in this answer, but it's not working. At the moment I've tried to remove the FrameLayout from the fragment activity but that didn't solve the issue. I've considered hard coding the scroll event from the listview but if possible I really want this to be working with no code behind..
Thanks in advance.

This is because you are using CoordinatorLayout with ListView. You can change your implementation to RecyclerView to achieve correct scroll.
check my answer here. This may help you.

try change from
local:layout_scrollFlags="scroll|enterAlways"
to
local:layout_scrollFlags="scroll|exitUntilCollapsed"

How can I provide auto-hide/show toolbar, when scroll my recyclerview with coordinator layout?

This is my layout file
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.moskart.mosfake.activity.MainActivity">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minHeight="?attr/actionBarSize"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
local:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<FrameLayout
android:id="#+id/fragment_placeholder"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
<View
android:layout_width="match_parent"
android:layout_height="5dp"
android:background="#drawable/toolbar_dropshadow" />
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/navigation_drawer_header"
app:itemIconTint="#color/navItemIconTintColor"
app:itemTextColor="#color/navItemTextColor"
app:menu="#menu/menu_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
I set app:layout_scrollFlags for my CollapsingToolbarLayout to scroll|enterAlways and expected that toolbar will work like in gapps (e.g. Google Play or Google Magazine) with auto-hide/show like on this sample:
Google Magazine
But I only got scrolling toolbar that does not retract automatically, but only if user completely scrolled it himself. See sample: my app
Here is my fragment with recyclerview, which I replace with fragment_placeholder
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.moskart.mosfake.fragment.CategorySelectionFragment"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/card_horizontal_margin"
android:paddingRight="#dimen/card_horizontal_margin"
/>
</LinearLayout>
Thanks for advice!

You should measure if the bottom and top offset of the AppBarLayout is offset for more than the half the the height of the AppBarLayout and user has released the scroll. When this condition is fulfilled just start animating the translationY of the Toolbar or the offsetting of the AppBarLayout.
This could be achieved with custom CoordinatorLayout.Behavor or with inheriting existing AppBarLayout.Behaviour and tweaking it to do so.

i think you want to do like this
take a look of this library
https://github.com/ksoichiro/Android-ObservableScrollView
here is the example about how to implement it
https://snow.dog/blog/material-design-flexible-space-header-with-image/

You need to use NestedScrollView
<android.support.v4.widget.NestedScrollView ...>
<LinearLayout ...>
//Your Code Here
</LinearLayout>
Check this Example

CoordinatorLayout with Toolbar and fragment

I'm using the layout below, The CoordinatorLayout holds inside it AppBarLayout (With Toolbar and TabLayout inside it) and a placeholder RelativeLayout, so I could add and replace fragments on it.
I'm experiencing margin errors, the fragments I add on the RelativeLayout will always over expand beyond the bottom of the screen (in the amount similar to the size of the AppBarLayout height), I've tried setting it's height to wrap_content and match_parent, in both cases it goes overboard.
if I remove the app:layout_behavior="#string/appbar_scrolling_view_behavior" from the RelativeLayout the top of it will be under the AppBarLayout which is also not the desired outcome.
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
app:tabIndicatorHeight="4dp"
app:tabIndicatorColor="#ffffff"
app:tabMode="scrollable"
android:visibility="gone"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<RelativeLayout
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/main_fragment_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="20dp"
android:src="#drawable/ic_done" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header"
app:menu="#menu/drawer_view"/>
</android.support.v4.widget.DrawerLayout>

I have figured out the problem on showing fragment below toolbar when using the coordinator layout. The problem in my case is:
In this image it shows the Fragment is overlapped by Toolbar.
Now just put your AppBarLayout and FrameLayout inside LinearLayout like below,
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/mainappbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"/>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
Now your problem is solved. And it will be like this.
The final image.

You will also see this issue if you have a ScrollView inside the fragment. So make sure you use a NestedScrollView instead:
<android.support.v4.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

Had the same issue. Changing RelativeLayout to FrameLayout with parameter app:layout_behavior="#string/appbar_scrolling_view_behavior" solved my problem.
<FrameLayout
android:id="#+id/main_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>

The issue has been solved by updating the recyclerview library (to com.android.support:recyclerview-v7:22.2.0)
The fragment I was loading had a recyclerview in it.

CoordinatorLayout using the ViewPager's RecyclerView

I am using the view CoordinatorLayout from android.support.design. I want to attach the app:layout_behavior to the fragment's RecyclerView?
In the example given by Google, they only attach it in the RecyclerView of the same XML file where the CoordinatorLayout was attached.
Is there a way to attach CoordinatorLayout to the fragment's RecyclerView within the ViewPager?
The sample is in this blog post at Android Developers blog.

Chris Banes has posted a sample on Github which shows exactly what you want to do.
Here is the xml file that defines how one can indirectly attach a coordinator layout to the viewpager's fragments.
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_done" />
</android.support.design.widget.CoordinatorLayout>
The idea is to let the viewpager have the layout_behavior attribute.

This might be dumb, but it didn't worked due to the fact that the build tool was not updated in the build.gradle of the application version to 22, I was using 21 that is why it is not working as expected to be.
Edit:
Also what SanderTuit said: adding com.android.support:recyclerview-v7:22.2.0 will also solve the problem

Use a FrameLayout and inject your fragment into that FrameLayout. Then set
app:layout_behavior to it. The only thing you need to do is set layout_behavior
to a sibling of AppBayLayout and that sibling will below the toolbar.
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

I recently had the same problem mentioned in the post, and the above solutions did not work for me. Luckily I managed to solve it. So just to share I am posting here
The problem was that in my code I had set
recyclerView.setNestedScrollingEnabled(false);
due to which the appbar was not responding to recyclerView's scrolls despite setting the layout_behaviour attribute to the viewPager. Changing the above-mentioned attribute to
recyclerView.setNestedScrollingEnabled(true);
solved the problem and the appbar started responding to the recylerView's scroll.

After a few tests, I found that put the TabLayout outside AppBarLayout, will works, whatever the viewpager's Fragment contains. This is my main xml.
<com.tqmall.legend.konwledge.view.VerticalSwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/swipe_refreshLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinator_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFE6ECF0">
<android.support.design.widget.AppBarLayout
android:id="#+id/kn_main_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentScrim="#android:color/black"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<include
layout="#layout/banner_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.9" />
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
android:background="#33000000"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.design.widget.TabLayout
android:id="#+id/main_fragment_issue_list_tab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
app:tabGravity="center"
app:tabIndicatorColor="#FF2CA2D5"
app:tabPaddingEnd="30sp"
app:tabPaddingStart="30sp"
app:tabSelectedTextColor="#FF2CA2D5"
app:tabTextColor="#FF4F5354" />
<android.support.v4.view.ViewPager
android:id="#+id/main_fragment_issue_list_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

I'm having the same problem, i solved the scrolling but putting toolbar and the tabs inside the app bar and wrap it and the viewpager with a coordinatorlayout.
Also in the layout of my recycle view(to be inflated) i add the layout_behavior. It works but the problem is everything is over each other.
This is my main page
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/music_foot"
>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/view_pager"
/>
<view
android:layout_width="match_parent"
android:layout_height="wrap_content"
class="android.support.design.widget.AppBarLayout"
android:id="#+id/appBar"
>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="56dp"
android:background="#1e88e5"
android:id="#+id/toolbar"
app:layout_scrollFlags="scroll|enterAlways"
></android.support.v7.widget.Toolbar>
<view
android:layout_width="match_parent"
android:layout_height="56dp"
class="com.astuetz.PagerSlidingTabStrip"
android:id="#+id/pager_tabs"
android:layout_below="#+id/appBar"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</view>
and this is my layout for the adapter
<android.support.v7.widget.RecyclerView
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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/recycleView" />
If I get it to work better ill tell you.