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How can I provide an auto-hide / show panel when scrolling my recyclerview with layout coordinator?

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 installed app:layout_scrollFlagsfor my CollapsingToolbarLayoutin scroll|enterAlwaysand expected the toolbar to work like in gapps (for example, in Google Play or in Google Magazine) using the auto-hide / show function, as in this example:

Google Magazine

But I only got a scroll of the toolbar, which is not distracted automatically, but only if the user has completely scrolled it by himself. See Example: My Application

Here is my recyclerview snippet that I am replacing 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 the advice!

+4
3

, AppBarLayout AppBarLayout, . , Y Toolbar AppBarLayout.

CoordinatorLayout.Behavor AppBarLayout.Behaviour .

+1

You need to use NestedScrollView

<android.support.v4.widget.NestedScrollView ...>
<LinearLayout ...>
    //Your Code Here
</LinearLayout>

Check Example

0
source

Source: https://habr.com/ru/post/1605749/

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