android - Fragment over another fragment that can be closed swiping up -

i've made fragment fullscreen overlay fragment b. want handle swipe touch can close fragment swiping , reopen swiping down.

i've made example image:

how can implement that? i've not found tutorial of particular case. thank you.

compile 'me.imid.swipebacklayout.lib:library:1.0.0'

<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="com.example.darwich.swipetoclose.mainactivity">      <radiogroup         android:id="@+id/id_radiogroup"         android:layout_centerhorizontal="true"         android:layout_margintop="40dp"         android:layout_width="wrap_content"         android:layout_height="wrap_content">          <radiobutton             android:id="@+id/mode_left"             android:text="left"             android:textsize="24sp"             android:layout_width="wrap_content"             android:layout_height="wrap_content" />          <radiobutton             android:id="@+id/mode_right"             android:text="right"             android:textsize="24sp"             android:layout_width="wrap_content"             android:layout_height="wrap_content" />          <radiobutton             android:id="@+id/mode_bottom"             android:text="bottom"             android:textsize="24sp"             android:layout_width="wrap_content"             android:layout_height="wrap_content" />          <radiobutton             android:id="@+id/all"             android:text="all"             android:textsize="24sp"             android:layout_width="wrap_content"             android:layout_height="wrap_content" />      </radiogroup>  </relativelayout> 

public class mainactivity extends swipebackactivity {      private swipebacklayout swipebacklayout;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          radiogroup trackingmodegroup = (radiogroup) findviewbyid(r.id.id_radiogroup);         swipebacklayout = getswipebacklayout();          trackingmodegroup.setoncheckedchangelistener(new radiogroup.oncheckedchangelistener() {             @override             public void oncheckedchanged(radiogroup group, int checkedid) {                 int edgeflag;                 switch (checkedid) {                     case r.id.mode_left:                         edgeflag = swipebacklayout.edge_left;                         break;                     case r.id.mode_right:                         edgeflag = swipebacklayout.edge_right;                         break;                     case r.id.mode_bottom:                         edgeflag = swipebacklayout.edge_bottom;                         break;                     default:                         edgeflag = swipebacklayout.edge_all;                 }                 swipebacklayout.setedgetrackingenabled(edgeflag);             }         });     } }