title: After hiding bottomsheet, how to drag it back up?
body: <p>After dragging-down a bottomsheet, and it hides itself off the screen (because of app:behavior_hideable="true"), how do you get it back?</p>
  
  <p>Drag-up doesn't work. I have to leave the activity and come back to get the bottomsheet back.</p>
  
  <pre><code>&lt;FrameLayout
      android:id="@+id/bottomSheet"
      app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
      android:background="#FFFFFF"
      android:layout_width="match_parent"
      android:layout_height="200dp"
      app:behavior_peekHeight="64dp"
      app:behavior_hideable="true"&gt;
  
  
      &lt;android.support.v7.widget.AppCompatTextView
          android:layout_gravity="center|top"
          android:text="Bottom Sheet"
          android:padding="16dp"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content" /&gt;
  
  &lt;/FrameLayout&gt;
  </code></pre>