slideup - Create a panel that slides up and out of the screen in Android -

i need guidance. need make custom view touched , drag screen slides out of screen. have tried cool library: here dependend 2 layouts. 1 slided out , 1 remains after that. have buggy , ugly.

public class demoactivity extends activity {  private slidinguppanellayout mlayout; private relativelayout layout;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_demo);      layout = (relativelayout) findviewbyid(r.id.panel);     final int defaulttop = layout.gettop();     final int defaultbottom = layout.getbottom();      relativelayout dragview = (relativelayout) findviewbyid(r.id.dragview);      mlayout = (slidinguppanellayout) findviewbyid(r.id.sliding_layout);     mlayout.setdragview(dragview);     mlayout.setpanelslidelistener(new panelslidelistener() {          @override         public void onpanelslide(view panel, float slideoffset) {         }          @override         public void onpanelexpanded(view panel) {             system.out.println("panel expanded");         }          @override         public void onpanelcollapsed(view panel) {             system.out.println("panel collapsed");         }          @override         public void onpanelanchored(view panel) {             system.out.println("anchored");         }          @override         public void onpanelhidden(view panel) {             system.out.println("panel hidden now");         }     });  }  @override public void onbackpressed() {     if (mlayout != null && mlayout.ispanelexpanded()) {         mlayout.collapsepanel();     } else {         super.onbackpressed();     } } 

}

the layout:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context=".demoactivity" >      <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:background="@android:color/transparent"         android:gravity="bottom"         sothree:dragview="@+id/dragview"         sothree:panelheight="60dp"         sothree:paralaxoffset="60dp"         sothree:shadowheight="0dp" >          <relativelayout             android:id="@+id/panel"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:background="@drawable/unt"             android:orientation="vertical" >              <button                 android:id="@+id/button"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_centerinparent="true"                 android:layout_gravity="center"                 android:text="sleep" />         </relativelayout>          <relativelayout             android:id="@+id/dragview"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:background="@android:color/transparent"             android:clickable="true"             android:focusable="false" >         </relativelayout>     </com.sothree.slidinguppanel.slidinguppanellayout>  </relativelayout> 

it slides leaves white background in back. if touch screen slides. so, need new path. did confrunted similar? need hint, not code. thanks.

i have used library mentioned here , worked out fine me. might have not set drag view/layout

do use mslidingpanellayout.setdragview(yourlayout) set layout can dragged