android – Viewpager被推出屏幕[CoordinatorLayout] [设计库]

我有一个简单的应用程序与viewpager包含3个片段.在其中一个片段中,我有Recyclerview列表.向下滚动时,工具栏将折叠,并显示向上滚动时.我的问题是当工具栏折叠并且我向左/向右滚动时我会以编程方式展开它并且它会将viewpager向下推,而不是仅仅重叠它.这导致屏幕视图的不令人满意的位移.如何让工具栏与我的viewpager重叠,而不是在展开时将其向下推？
我做了一个问题 click的简短录音

这是我的main_layout：

<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:fab="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=".UI.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/appBarLayouy"
        android:theme="@style/AppTheme.AppBarOverlay">

        <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"
            app:layout_scrollFlags="scroll|enteralways" />

        <android.support.design.widget.TabLayout
            android:id="@+id/sliding_tabs"
            android:layout_width="match_parent"
            android:layout_height="@dimen/tabsHeight"
            style="@style/NavigationTab"/>


    </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"/>


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

    <com.getbase.floatingactionbutton.FloatingActionsMenu
        android:id="@+id/floatingActionMenu"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        fab:fab_addButtonColornormal="@color/blood_orange"
        fab:fab_addButtonColorpressed="@color/dirtyWhite"
        fab:fab_addButtonPlusIconColor="@color/dirtyWhite"
        fab:fab_addButtonSize = "normal"
        fab:fab_labelStyle="@style/menu_labels_style"
        fab:fab_labelsPosition="left"
        app:layout_anchor="@id/viewpager"
        app:layout_anchorGravity="bottom|end">

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:id="@+id/createPlanBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            fab:fab_colornormal="@color/blood_orange"
            fab:fab_title="Create a plan"
            fab:fab_size="normal"
            app:fab_icon="@drawable/ic_event_white_48dp"
            fab:fab_colorpressed="@color/dirtyWhite"/>

        <com.getbase.floatingactionbutton.FloatingActionButton
            android:id="@+id/changeStatusBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            fab:fab_colornormal="@color/blood_orange"
            fab:fab_size="normal"
            app:fab_icon="@drawable/ic_textsms_white_48dp"
            fab:fab_title="Change status"
            fab:fab_colorpressed="@color/dirtyWhite"/>

    </com.getbase.floatingactionbutton.FloatingActionsMenu>

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

这是包含recyclerview布局的片段：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
            android:background="@color/tab_bg">

<android.support.v7.widget.RecyclerView
    android:id="@+id/FeedCardViewList"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clipToPadding="true"
    xmlns:android="http://schemas.android.com/apk/res/android"/>

</RelativeLayout>

content_main布局：

<RelativeLayout
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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".UI.MainActivity"
tools:showIn="@layout/activity_main"
app:layout_behavior="@string/appbar_scrolling_view_behavior">


</RelativeLayout>

<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.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            ...collapsing toolbar content...

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

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

    <FrameLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        ...content beneath toolbar...

    </FrameLayout>

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

AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.app_bar);
CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
FrameLayout contentLayout = (FrameLayout) view.findViewById(R.id.content);
appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {

    @Override
    public void onOffsetChanged(AppBarLayout appBarLayout,int verticalOffset) {
        ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) contentLayout.getLayoutParams();
        layoutParams.setMargins(0,appBarLayout.getMeasuredHeight() + verticalOffset);
        contentLayout.requestLayout();
    }

});