Hide TabLayout on Scroll of Content instead of ToolBar

Question

I want to hide TabLayout on scrolling my content. Currently I searched the net but I found samples which hide the Toolbar, but I want to hide TabLayout. So please help me. I tried below code.

<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/id_appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true">

        <android.support.v7.widget.Toolbar
            android:id="@+id/id_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_scrollFlags="scroll|enterAlways"/>

        <android.support.design.widget.TabLayout
            android:id="@+id/id_tabs"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize" 
            style="@style/MyCustomTabLayout"/>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager
        android:id="@+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.CoordinatorLayout>

Here is the example applications: https://play.google.com/store/apps/details?id=com.contextlogic.wish https://play.google.com/store/apps/details?id=co.vine.android

Answer 1

Try this approach. The main idea is to move Toolbar outside the CoordinatorLayout and wrap this view structure with other container layout.

<RelativeLayout 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.design.widget.AppBarLayout
        android:id="@+id/id_toolbar_container"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true">

        <android.support.v7.widget.Toolbar
            android:id="@+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="match_parent"
        android:layout_below="@id/id_toolbar_container">

        <android.support.design.widget.AppBarLayout
            android:id="@+id/id_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:layout_scrollFlags="scroll|enterAlways">

                <android.support.design.widget.TabLayout
                    android:id="@+id/id_tabs"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize" />
            </android.support.design.widget.CollapsingToolbarLayout>

        </android.support.design.widget.AppBarLayout>

        <android.support.v4.view.ViewPager
            android:id="@+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.CoordinatorLayout>
</RelativeLayout>

Answer 2

While doing animation on scroll, CoordinatorLayout starts searching all the children views of AppBarLayout in a linear manner and it stops animating layouts once it finds a layout with non-scrolling tag.

Exp1:

<CoordinatorLayout>
    <AppBarLayout>
         <layout1 with scrollFlag = "scroll|enterAlways">
         <layout2 with no scrollFlag>
    </AppBarLayout>
</CoordinatorLayout>

Only layout1 will have animation

Exp2:

<CoordinatorLayout>
    <AppBarLayout>
         <layout1 with no scrollFlag>
         <layout2 with scrollFlag = "scroll|enterAlways">
    </AppBarLayout>
</CoordinatorLayout>

None of them will have animation

Exp3: If none of them have scrollFlag, none of them will have animation

Exp4: If both of them have scrollFlag, both of them will have animation

---

In your case, you'll need to keep toolbar outside the coordinator layout and add tablayout as a child of AppBarLayout with scrollFlags = "scroll|enterAlway"

Answer 3

Hello is you wish to disappear the toolbar and the tabs still view, you must write the next code:

<android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_scrollFlags="scroll|enterAlways"
        ></android.support.v7.widget.Toolbar>

And if you want hide the TabLayout use scrollFlags in the block of TabLayout

app:layout_scrollFlags="scroll|enterAlways"