<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
style="@style/navBar">
<TextView
android:id="@+id/tvTitle"
style="@style/navBarText"
android:text="内容" />
<ImageView
android:id="@+id/tvBack"
style="@style/navBarIcon" />
</RelativeLayout>
</LinearLayout>
如图所示,怎么去掉这个半透明阴影下的白色底钯,下面是滚动显示区域