Recycler view + View Pager + Nested ScrollView + CoordinatorLayout - android

I am working on a layout such that the ViewPager holding a fragment that contains recycler view is placed in a nester scrollView of Coordinator Layout.
The problem is once i clicked on the recycler view the nested scroll view is not working..
Is there any possible way to have a layout like these that also scrolls
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:id="#+id/lin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
<NestedScrollView>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
app: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:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="190dp"
android:minHeight="190dp"
app:layout_collapseMode="parallax" >
<ViewFlipper
android:id="#+id/view_flipper"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"/>-->
</ViewFlipper>
</FrameLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="?attr/colorPrimary" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

Don't use 「Recycler view View Pager + NestedScrollView + CoordinatorLayout」 at the same time,just remove the NestedScrollView it's works fine.
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:expandedTitleTextAppearance="#android:color/transparent"
app:layout_collapseParallaxMultiplier="0.7"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:titleEnabled="false">
<LinearLayout
android:id="#+id/header_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
android:fitsSystemWindows="true"
android:orientation="vertical"
app:layout_collapseParallaxMultiplier="0.7">
<..somethings..>
</LinearLayout>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="48dp"
android:visibility="invisible"
app:layout_collapseMode="pin"/>
</android.support.design.widget.CollapsingToolbarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_gravity="bottom"
android:orientation="vertical">
<View
android:layout_width="wrap_content"
android:layout_height="0.4dp"
android:background="?attr/separate_line_color"/>
<android.support.design.widget.TabLayout
android:id="#+id/tablayout_user"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="#+id/view_line"
app:layout_scrollFlags="enterAlways"
app:tabGravity="center"
android:background="?attr/common_bg_white_black"
app:tabIndicatorColor="#color/theme_color"
app:tabIndicatorHeight="2dp"
app:tabMaxWidth="0dp"
app:tabMode="fixed"
app:tabPaddingEnd="20dp"
app:tabPaddingStart="20dp"
app:tabSelectedTextColor="#color/theme_color"
app:tabTextAppearance="#style/TabTextAppearance2"
app:tabTextColor="?attr/text_color_2"/>
</LinearLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

The ViewPager doesn't work in a NestedScrollView. You have to use it as a child of the CoordinatorLayout.
<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">
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
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:background="#android:color/transparent"
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:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="190dp"
android:minHeight="190dp"
app:layout_collapseMode="parallax">
<ViewFlipper
android:id="#+id/view_flipper"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"/>-->
</ViewFlipper>
</FrameLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="?attr/colorPrimary" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

Related

TabLayout is not shown under Toolbar

This layout is incorrect. I placed Tablayout inside CollapsingToolbar to make sure it is visible:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/gray_background"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="234dp"
android:id="#+id/promo_detail_appbar"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/promo_detail_collapsing_toolbar"
android:fitsSystemWindows="true"
app:contentScrim="#android:color/white"
app:expandedTitleMarginBottom="40dp"
app:expandedTitleMarginStart="20dp"
app:collapsedTitleTextAppearance="#style/CollapsedToolbarTitle"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/header"
android:background="#drawable/promo_background"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#android:color/white"
android:text="Королевский фарфор"
android:layout_marginBottom="15dp"
android:layout_marginStart="20dp"
app:layout_collapseMode="parallax"
android:layout_gravity="bottom"
/>
<LinearLayout
<!-- other views here-->
</LinearLayout>
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/tablayout"
app:tabGravity="fill"
app:tabMode="fixed"
android:layout_gravity="bottom"
/>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:id="#+id/promo_detail_toolbar"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f1efef"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<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.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
This is how it looks now
I need Tablayout to appear under toolbar in both expanded and collapsed states. Any help would be appreciated. Thank you.
Try this one
<android.support.design.widget.AppBarLayout
android:id="#+id/htab_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:fitsSystemWindows="true"
android:stateListAnimator="#null"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/htab_collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
app:titleEnabled="false">
<ImageView
android:id="#+id/htab_header"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg_design"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
/>
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="0.3"
android:background="#android:color/black"
android:fitsSystemWindows="true"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="top"
android:layout_marginBottom="48dp"
app:layout_collapseMode="pin"
app: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:layout_gravity="bottom"
app:tabGravity="fill"
app:tabIndicatorColor="#color/white"
app:tabIndicatorHeight="3dp"
app:tabMode="scrollable"
app:tabSelectedTextColor="#color/white"
app:tabTextAppearance="#style/TextAppearance.Subhead.Bold"
app:tabTextColor="#910b32"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_anchorGravity="bottom"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<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"
/>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>

Wrong behavior SwipeRefreshLayout with CollapsingToolbarLayout

In my application, I need an appbar: a simple toolbar (always), a layout or a widget (when scrolling it should collapse), tabLayout (always).
This problem occurs with a 50% chance of re-creating the view.
Without a swipeRefreshLayout, this problem is not present.
Please help to solve this problem. How best to achieve the desired result?
Good Behavior
Wrong behavior
parent_fragment.xml
<LinearLayout 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:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/id_toolbar_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#color/colorAccent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="#string/app_name"
android:textColor="#android:color/white"
android:textSize="24sp" />
</FrameLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:tabSelectedTextColor="#ffffff"
app:tabTextColor="#afffffff" />
</android.support.design.widget.AppBarLayout>
<ru.kgdev.ecohelper.ui.widget.NoScrollViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?android:attr/actionBarSize"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed"/>
</android.support.design.widget.CoordinatorLayout>
</LinearLayout>
child_fragment.xml
<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.design.widget.CoordinatorLayout
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">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
</android.support.v4.widget.SwipeRefreshLayout>
</android.support.design.widget.CoordinatorLayout>
</android.support.constraint.ConstraintLayout>
Trouble in parent_fragment.xml, in my opinion, right way: need wrap AppBarLayout with TabLayout and ViewPager in LinearLayout for avoid use layout_marginTop in the ViewPager. The result is the following parent_fragment.xml:
<LinearLayout 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:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/id_toolbar_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#color/colorAccent">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="#string/app_name"
android:textColor="#android:color/white"
android:textSize="24sp" />
</FrameLayout>
</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.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:tabSelectedTextColor="#ffffff"
app:tabTextColor="#afffffff" />
</android.support.design.widget.AppBarLayout>
<ru.kgdev.ecohelper.ui.widget.NoScrollViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
</LinearLayout>
After this fix, my app work fine.
If anyone can explain the origin of this strange behavior in more detail, I will be grateful. Thank you.

Nestscrollview not working

Hi In CollapsingToolbar nested scroll not working and not collapse toolbar in android
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/MyAppbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/material_deep_teal_500"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/bgheader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/ssss"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
</LinearLayout>
<ImageView
android:id="#+id/ddd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="15dp"
android:background="#drawable/dedd"
/>
</FrameLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/MyToolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill_vertical"
android:fillViewport="true"
android:layout_below="#+id/MyAppbar"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/card_recycler_view"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</android.support.v4.widget.NestedScrollView>
</RelativeLayout>
I display group name and image as per whatsapp.when scroll hole page collapse toolbar and listview display like whatsapp.
try this..
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.example.macsocial1.firstdemo.demo">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="250dp"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="#color/orange"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/bgheader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
</LinearLayout>
<ImageView
android:id="#+id/ddd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="15dp"
/>
</FrameLayout>
<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/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/card_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

Collapsable ToolBar Layout is not Collapsing android

This is my xml file.On Scrolling the toobar is not scrolling at all.It remains Sticky ,only the elements of recycler view scroll
<CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="true"
>
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/collappbar"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
>
<View
android:id="#+id/image"
android:layout_width="fill_parent"
android:layout_height="192dp"
app:layout_collapseMode="parallax"
android:background="#android:color/transparent"
/>
<include layout="#layout/toolbar" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f4f4f4"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_gravity="bottom"
android:layout_marginBottom="50dp"
android:background="#color/light_gray"/>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="fill_parent"
android:layout_height="50dp"
app:tabMode="fixed"
app:tabGravity="fill"
app:tabTextColor="#color/gray"
app:tabTextAppearance="#style/tabLayoutStyle"
app:tabSelectedTextColor="#color/selected_text_color"
app:tabIndicatorColor="#color/more_comment_color"
android:background="#android:color/background_light"
android:layout_gravity="bottom"
/>
</CoordinatorLayout>
The Collapsable toolbar is not collapsing.Please help me in finding out what is missing from the code
Use like this it will work :
<?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"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
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:background="#color/backgroundlayout"
android:fitsSystemWindows="true"
app:collapsedTitleGravity="left"
app:contentScrim="#ffffff"
app:expandedTitleMarginEnd="0dp"
app:expandedTitleMarginStart="0dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<View
android:id="#+id/image"
android:layout_width="fill_parent"
android:layout_height="192dp"
android:background="#android:color/transparent"
app:layout_collapseMode="parallax"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#android:color/transparent"
android:minHeight="?attr/actionBarSize"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
Please refer the below link,
https://guides.codepath.com/android/Handling-Scrolls-with-CoordinatorLayout
Appbar behaviour works only if the content view has a RecyclerView or any other View capable of nested scrolling such as NestedScrollView.

NestedScrollView in CoordinatorLayout not showing overscroll

I have NestedScrollView with some texts and because that is in
CoordinatorLayout, when i scroll it to end of the NestedScrollView does not show overscroll effect, my guess is that when i reach end and try to scroll more i don't scroll nestedScrollView but i scroll CoordinatorLayout.
<android.support.design.widget.CoordinatorLayout
android:id="#+id/activity_news_main_content"
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:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/activity_news_appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/activity_news_background_height"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/activity_news_collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top"
android:background="#color/activity_news_collapsing_toolbar_background_color"
app:contentScrim="#color/colorPrimary"
app:expandedTitleMarginBottom="#dimen/activity_news_title_margin_bottom"
app:expandedTitleMarginStart="#dimen/activity_news_title_margin_start"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/activity_news_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7"
app:layout_scrollFlags="scroll|exitUntilCollapsed"/>
<View
android:layout_width="match_parent"
android:layout_height="#dimen/activity_news_view_height"
android:layout_gravity="bottom"
android:background="#color/activity_news_collapsing_toolbar_background_color"/>
<include
android:id="#+id/app_bar"
layout="#layout/news_app_bar"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="#dimen/activity_news_padding">
<TextView
android:id="#+id/activity_news_subtitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="#dimen/activity_news_subtitle_bottom_padding"/>
<TextView
android:id="#+id/activity_news_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
That design is wrong.
See:
<include
android:id="#+id/app_bar"
layout="#layout/news_app_bar"/>
You were including the layout in the CollapsingToolbarLayout which that should be in the NestedScrollView and not that CollapsingToolbarLayout.
Just do your stuffs in the NestedScrollView like this:
<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/activity_news_main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<!--Here is the contents-->
<!--<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/activity_news_subtitle"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/activity_news_description"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>-->
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.AppBarLayout
android:id="#+id/activity_news_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbarmain"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/activity_news_collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
app:contentScrim="#color/colorPrimary"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/activity_news_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7"
app:layout_scrollFlags="scroll|exitUntilCollapsed" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
And read this: CollapsingToolbarLayout
CollapsingToolbarLayout is a wrapper for Toolbar which implements a
collapsing app bar.

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