sheishuoAPP/app/res/layout/group_list_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/group_list_root"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:elevation="0dp">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:titleTextAppearance="@style/Toolbar.TitleText"></android.support.v7.widget.Toolbar>
    </android.support.design.widget.AppBarLayout>

    <ListView
        android:id="@+id/group_list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@id/app_bar_layout"
        android:background="@color/white"
        android:cacheColorHint="@color/transparent"
        android:divider="@color/transparent"
        android:dividerHeight="0dp"
        android:scrollbars="none" />

</RelativeLayout>