CoordinatorLayout using the ViewPager's RecyclerView

Question

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.

Answer 1

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.

Answer 2

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

Answer 3

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>

Answer 4

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.

Answer 5

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>

Answer 6

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.