android - Scene. Slide transition under views -

look @ sample. have 2 scenes, start & end scenes. layout of start scene:

<?xml version="1.0" encoding="utf-8"?> <merge     android:id="@+id/vgroot"     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:parenttag="relativelayout"     tools:ignore="hardcodedtext"     >      <button         android:id="@+id/btn1"         style="@style/widget.appcompat.button.borderless"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_below="@+id/cardview"         android:text="button"         android:layout_centerhorizontal="true"         />      <button         android:id="@+id/btngo"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_below="@id/btn1"         android:text="@string/go"         android:layout_centerhorizontal="true"         />      <android.support.v7.widget.cardview         android:id="@+id/cardview"         android:layout_height="wrap_content"         android:layout_width="match_parent"         android:layout_margin="16dp"         android:translationz="3dp"         >          <framelayout             android:id="@+id/container"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:orientation="vertical"             android:background="#3829ab"             android:padding="32dp"             >              <textview                 android:id="@+id/tvtext"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="text title"                 android:textappearance="?android:textappearancemedium"                 android:textcolor="@android:color/white"                 />          </framelayout>      </android.support.v7.widget.cardview>  </merge> 

there have btn1 sliding transition applied, cardview , container, change bounds , tvtext body of cardview.

and ending scene:

<?xml version="1.0" encoding="utf-8"?> <merge     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     tools:ignore="hardcodedtext"     tools:parenttag="relativelayout"     >      <android.support.v7.widget.cardview         android:id="@+id/cardview"         android:layout_height="wrap_content"         android:layout_width="match_parent"         app:cardcornerradius="0dp"         >          <framelayout             android:id="@+id/container"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:padding="8dp"             android:background="#3829ab"             android:orientation="vertical"             >              <textview                 android:id="@+id/tvtext"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:text="text title"                 android:textappearance="?android:textappearancemedium"                 android:textcolor="@android:color/white"                 />          </framelayout>      </android.support.v7.widget.cardview>  </merge> 

fragment code transition:

public class fragmentstarttransition extends fragment {     @bindview(r.id.btngo) view btngo;     @bindview(r.id.vgroot) viewgroup vgroot;      private unbinder unbinder;      @nullable     @override     public view oncreateview(layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {         viewgroup view = (viewgroup) inflater.inflate(r.layout.fragment_start_transition, container, false);         unbinder = bind(this, view);         return view;     }      @override     public void onviewcreated(view view, @nullable bundle savedinstancestate) {         super.onviewcreated(view, savedinstancestate);         btngo.setonclicklistener(btngo.setonclicklistener(v -> movenext());     }      @override     public void ondestroyview() {         super.ondestroyview();         unbinder.unbind();     }      private void movenext() {         scene scene = scene.getsceneforlayout(vgroot, r.layout.scene_end, getcontext());         transitionmanager.go(scene, gettransition());     }      private transition gettransition() {         slide slide = new slide(gravity.top);         slide.addtarget(r.id.btn1);          changebounds changebounds = new changebounds();         changebounds.addtarget(r.id.cardview);         changebounds.addtarget(r.id.container);         changebounds.addtarget(r.id.tvtext);          return new transitionset()                 .setordering(transitionset.ordering_together)                 .addtransition(slide)                 .addtransition(changebounds)                 .setduration(1500);     } } 

fragment_start_transition:

<relativelayout     android:id="@+id/vgroot"     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:orientation="vertical"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:ignore="hardcodedtext"     >      <include layout="@layout/scene_start"/>  </relativelayout> 

result animation:

i want slide btn1 under cardview , container. can see cardview placed @ end of root layout on button. in result animation slided on cardview. can somehow control such z-axis relations between animated views?

tried cardview.bringtofront() - doesn't help

there definetely should simple solution, can't find it.
need help, guys.

update: because framework draws slide transition on scene container view overlay, @ android.transition.visibility class:

 sceneroot.getoverlay().add(overlayview); 

but question still opened.