如何从顶部定义SlidingUpPanelLayout的长度？

Question

我在我的应用中实现了SlidingUpPanelLayout。但我必须从顶部定义SlidingUpPanelLayout的长度。

这是我的代码

<com.sothree.slidinguppanel.SlidingUpPanelLayout
    xmlns:sothree="http://schemas.android.com/apk/res-auto"
    android:id="@+id/sliding_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="bottom"
    sothree:umanoPanelHeight="430dp"
    sothree:umanoShadowHeight="4dp"
    sothree:umanoParallaxOffset="50dp"
    sothree:umanoDragView="@+id/dragView"
    sothree:umanoOverlay="true"
    sothree:umanoScrollableView="@+id/main">