AppBarLayout在滚动时在屏幕底部留下白色条纹

Question

我正在使用此布局试图实现可折叠的应用程序栏。

<android.support.v4.widget.DrawerLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:id="@+id/drawer_layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:fitsSystemWindows="true"> 

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

    <android.support.design.widget.AppBarLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:animateLayoutChanges="true" 
     android:theme="@style/ThemeOverlay.AppCompat.Dark"> 

     <android.support.v7.widget.Toolbar 
      android:id="@+id/toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      android:background="@color/colorPrimary" 
      app:layout_scrollFlags="scroll|enterAlways"> 
      android:theme="@style/ThemeOverlay.AppCompat.Dark"> 
     </android.support.v7.widget.Toolbar> 

     <android.support.design.widget.TabLayout 
      android:id="@+id/tab_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:background="?attr/colorPrimary" 
      android:theme="@style/ThemeOverlay.AppCompat.Dark" 
      app:tabGravity="fill" 
      app:tabMode="scrollable"> 
     </android.support.design.widget.TabLayout> 

     <android.support.v4.view.ViewPager 
      android:id="@+id/viewpager" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:background="@color/colorPrimaryLight" 
      app:layout_behavior="@string/appbar_scrolling_view_behavior"> 
     </android.support.v4.view.ViewPager> 

    </android.support.design.widget.AppBarLayout> 
    <android.support.design.widget.FloatingActionButton 
     android:id="@+id/floating_search_button" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_marginBottom="@dimen/activity_vertical_margin" 
     android:layout_marginRight="@dimen/activity_horizontal_margin" 
     android:src="@mipmap/ic_contacts" 
     app:layout_anchor="@id/viewpager" 
     app:layout_anchorGravity="bottom|right|end"/> 
</android.support.design.widget.CoordinatorLayout> 
<android.support.design.widget.NavigationView 
    android:id="@+id/navigation_view" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_gravity="start" 
    android:background="@color/colorPrimaryLight" 
    app:headerLayout="@layout/drawer_header" 
    app:menu="@menu/drawer"> 
</android.support.design.widget.NavigationView> 

它工作正常，但是当它滚动在屏幕的底部留下一条白色带。我已经发布了一张图片以使其更加清晰。 Bottom ribbon

任何想法如何解决这个问题？提前致谢。

Answer 1

把viewPager AppBarLayout的外部和内部coordinatorLayout