xml - Error "Could not find class android.graphics.drawable.RippleDrawable" occurs while changing FAB icon -


i have fab using in order hide or show bottomnavigationbar in pplication. works fine in andorid 7.0 (1080p), when trying run app in android 4.4 (720p), fab not visible.

also, when hiding or showing bottomnavigationbar, moving fab down , respectively, , changing icon on fab in order make little better.

this xml code

<relativelayout android:layout_height="match_parent" android:layout_width="match_parent" xmlns:app="http://schemas.android.com/apk/res-auto" android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android">  <android.support.design.widget.floatingactionbutton     android:id="@+id/fab"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_alignparentend="true"     android:layout_alignparentbottom="true"     android:layout_gravity="bottom|end"     android:clickable="true"     app:fabsize="mini"     app:elevation="8dp"     app:ripplecolor="@color/colorprimary"     android:layout_margin="16dp"     app:srccompat="@drawable/ic_show" />  <framelayout android:layout_width="match_parent"     android:layout_height="match_parent"     android:id="@+id/container"     xmlns:android="http://schemas.android.com/apk/res/android">         <!-- frame layout content -->  </framelayout>      <framelayout         android:id="@+id/frame_layout"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:background="@android:color/transparent"         android:elevation="3dp">         <!-- frame layout content -->      </framelayout>           <android.support.design.widget.bottomnavigationview             android:id="@+id/navigation"             android:layout_width="match_parent"             android:layout_height="56dp"             android:layout_alignparentbottom="true"             android:background="@color/colorprimary"             android:iconifiedbydefault="false"             app:itemicontint="#fff"             app:itemtextcolor="#fff"             app:menu="@menu/bottom_bar"/>  </relativelayout>

this code have in activity

    fab.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {              if(bottomnavigationview.getvisibility() == view.visible){                  bottomnavigationview.setvisibility(gone);                  fab.setimagedrawable(contextcompat.getdrawable(getapplicationcontext(), r.drawable.ic_show));                  final objectanimator movefab                         = objectanimator.offloat(fab, view.translation_y, fab.gety(), 0);                 movefab.setduration(300);                 movefab.setinterpolator(new decelerateinterpolator());                 movefab.start();              }else if(bottomnavigationview.getvisibility() == view.gone){                  bottomnavigationview.setvisibility(view.visible);                  fab.setimagedrawable(contextcompat.getdrawable(getapplicationcontext(), r.drawable.ic_hide));                  final objectanimator movefab                         = objectanimator.offloat(fab, view.translation_y, fab.gety(), -150);                 movefab.setduration(300);                 movefab.setinterpolator(new decelerateinterpolator());                 movefab.start();              }          }     });

my log cat says 

could not find class 'android.graphics.drawable.rippledrawable', referenced method android.support.v7.widget.appcompatimagehelper.hasoverlappingrendering

am using not supported android 4.4 or making mistake?

i have gone through many questions similar titles, nothing seems relevant.


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