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ViewPager in CoordinatorLayout then scrolls the tablayout off screen, doesn't work

I have a viewpager in CoordinatorLayout like this:

    <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"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme"/>

    <android.support.design.widget.TabLayout
        android:id="@+id/tab_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:tabMode="scrollable"/>
</android.support.design.widget.AppBarLayout>

<android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

and in the viewpager each slice is a webview.

The code can be run, but when I view my webview. tablayout offscreen doesn't work. it's just in the title.

UPDATE:

I am trying to use relativelayout for the content of my views and use NestedScrollView as parent of relativelayout, but the webview is gone (progress bar showed good results). Is it a bug ???

here is my snippet layout:

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/nestedScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent">

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:minHeight="300dp">

    <ProgressBar
        android:id="@+id/pb"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="fill_parent"
        android:layout_height="2dp"
        android:indeterminateOnly="false"
        android:max="100"
        android:progressDrawable="@drawable/progress_bar_states"></ProgressBar>

    <com.handmark.pulltorefresh.library.PullToRefreshWebView
        android:id="@+id/webview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/pb" />
</RelativeLayout>

</android.support.v4.widget.NestedScrollView>
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3 answers


For those having an issue with content not showing when using NestedScrollView add "fillViewport" to xml:



<android.support.v4.widget.NestedScrollView
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/nestedScrollView"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fillViewport="true">
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Try it like this:

<android.support.design.widget.CoordinatorLayout
    android:id="@+id/home_coordinator_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/home_appbar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:elevation="2dp"
        app:paddingEnd="0dp"
        app:paddingStart="0dp">

        <include layout="@layout/toolbar_appcompat"></include>

        <android.support.design.widget.TabLayout
            android:id="@+id/home_tab_layout"
            style="@style/TabLayoutStyle"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabContentStart="2dp"
            app:tabGravity="fill"
            app:tabIndicatorColor="@android:color/white"
            app:tabIndicatorHeight="2dp"
            app:tabMinWidth="24dp"
            app:tabMode="fixed"
            app:tabPadding="1dp"
            app:tabSelectedTextColor="@android:color/tab_indicator_text"
            app:tabTextColor="@android:color/darker_gray" />
    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/home_view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        app:paddingEnd="0dp"
        app:paddingStart="0dp" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab_home"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:src="@drawable/arrow_toggle"
        app:borderWidth="1dp"
        app:elevation="3dp"
        app:fabSize="normal"
        app:layout_anchor="@+id/home_coordinator_layout"
        app:layout_anchorGravity="bottom|right|end"
        app:pressedTranslationZ="2dp"
        app:rippleColor="@color/swipe_refresh_color_scheme_green" />

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


This works well in my project.

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Probably the problem is with the app: layout_behavior = "@ string / appbar_scrolling_view_behavior". You will find more information here: Android - Footer scrolls off screen when used in CoordinatorLayout

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