Android listview 或ScrollView 的滚动条一些设置

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="70"
    android:layout_margin="20dp"
    android:padding="10dp"
    android:scrollbars="vertical"
    android:scrollbarStyle="outsideOverlay"
    android:scrollbarSize="4dp"
    android:scrollbarThumbVertical="@drawable/ScrollView_1"
    android:scrollbarTrackVertical="@drawable/ScrollView_2"

android:fadeScrollbars="false">

<ListView
    android:id="@+id/list"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="match_parent"
    android:divider="@drawable/ems_list_line"
    android:paddingRight="50dp"
    android:dividerHeight="1px"
    android:scrollbars="vertical"
    android:scrollbarStyle="outsideOverlay"
    android:scrollbarSize="4dp"
    android:scrollbarThumbVertical="@drawable/ScrollView_1"
    android:scrollbarTrackVertical="@drawable/ScrollView_2"
    android:fadeScrollbars="false">

</ListView>