可扩展列表视图展开组滚动问题

Question

我有父活动，里面有折叠工具栏和查看分页器。视图寻呼机中的一个页面包含ExpandableListView。我在扩展时显示子项目时遇到问题。与子计数相比，只有少数项可见。我该如何解决这个问题。有人可以帮我解决它。 这是我的父活动布局

 <?xml version="1.0" encoding="utf-8"?>
<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:fitsSystemWindows="true">

  <android.support.design.widget.AppBarLayout
      android:id="@+id/app_bar_layout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:fitsSystemWindows="true"
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorWhite"
        android:fitsSystemWindows="true"
        app:expandedTitleTextAppearance="@android:color/transparent"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

           <android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="@dimen/dimen56"
          android:background="@drawable/app_gradient"
          app:layout_collapseMode="pin"
          app:layout_scrollFlags="scroll|enterAlways"
          app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
    </android.support.design.widget.CollapsingToolbarLayout>
  </android.support.design.widget.AppBarLayout>
   <android.support.v4.widget.NestedScrollView
      android:id="@+id/scroll"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_marginTop="@dimen/dimen16"
      android:clipToPadding="false"
      android:fillViewport="true"
      android:focusable="false"
      app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

      <android.support.design.widget.TabLayout
          android:id="@+id/tab_layout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:background="@color/colorWhite"
          android:elevation="0dp"
          android:fontFamily="@string/font_family_medium"
          android:minHeight="?attr/actionBarSize"
          android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
          app:tabGravity="fill"
          app:tabIndicatorColor="@color/colorBlue"
          app:tabIndicatorHeight="@dimen/height4"
          app:tabMode="scrollable"
          app:tabContentStart="@dimen/dimen30"
          app:tabSelectedTextColor="@color/colorBlue"
          app:tabTextColor="@color/colorPrimaryText" />


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

      <android.support.v4.view.ViewPager
          android:id="@+id/view_pager"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"/>

    </LinearLayout>
  </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

  

这是我的一个包含ExpandableListView

的标签片段

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:fillViewport="true"
    android:orientation="vertical">

    <ExpandableListView
        android:id="@+id/expListQs"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="@color/colorDivider"
        android:dividerHeight="@dimen/height1"
        android:focusable="true"
        android:transcriptMode="disabled" />

</LinearLayout>