android - Why even using requestLayout() after expanding view the textViews overlap each other in ConstrainLayout? -

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the bottom part invisible when user clicks on item bottom part become visible , description line(3_rd line) when view isn't expanded shows 1 line, becomes expanded should show as should 3-4 lines, when description occupies 3-4 lines, text if bottom part overlaps , call requestlayout nothing changeenter image description here

    if (holder.binding instanceof storeofferitembinding) {                 final boolean isexpanded = position == expandedposition;                 ((itembinding) (holder.binding)).offerdetail.setvisibility(isexpanded ? view.visible : view.gone);                 if (isexpanded) {                     holder.itemview.requestlayout();                 }                 ((itembinding) (holder.binding)).offerdescription.setmaxlines(isexpanded ? 4 : 1);                 holder.itemview.setactivated(isexpanded);                 holder.itemview.setonclicklistener(view -> {                     expandedposition = isexpanded ? -1 : holder.getadapterposition();                     notifyitemchanged(holder.getadapterposition());                 });                 if(isexpanded) {                     holder.itemview.requestlayout();                 }             }  <?xml version="1.0" encoding="utf-8"?>  <android.support.constraint.constraintlayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:animatelayoutchanges="true"     android:background="?attr/selectableitembackground">   <textview         android:id="@+id/offer_title"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="8dp"         android:layout_marginstart="8dp"         android:layout_margintop="8dp"         android:text="@{offer.productname()}"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constrainthorizontal_bias="0.5"         app:layout_constraintleft_torightof="@+id/offer_image"         app:layout_constraintright_toleftof="@+id/offer_add_to_user"         app:layout_constraintstart_toendof="@+id/offer_image"         app:layout_constrainttop_totopof="parent"         tools:text="juice valfria" />      <textview         android:id="@+id/offer_price"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginright="8dp"         android:layout_marginstart="8dp"         android:layout_margintop="8dp"         android:text="@{offer.offercondition()}"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constrainthorizontal_bias="1.0"         app:layout_constraintright_toleftof="@+id/offer_add_to_user"         app:layout_constraintstart_toendof="@+id/offer_image"         app:layout_constrainttop_tobottomof="@+id/offer_title"         tools:text="34,50 kr/kg" />      <textview         android:id="@+id/offer_description"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="8dp"         android:layout_marginleft="8dp"         android:layout_marginright="8dp"         android:layout_margintop="8dp"         android:ellipsize="end"         android:lines="1"         android:text="@{offer.sizeorquantity()}"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constrainthorizontal_bias="0.5"         app:layout_constraintleft_torightof="@+id/offer_image"         app:layout_constraintright_toleftof="@+id/offer_add_to_user"         app:layout_constrainttop_tobottomof="@+id/offer_price"         tools:text="description" />      <imageview         android:id="@+id/offer_image"         android:layout_width="48dp"         android:layout_height="48dp"         android:layout_marginbottom="8dp"         android:layout_marginstart="16dp"         android:layout_margintop="24dp"         app:imageuri="@{offer.imageurl()}"         app:layout_constraintbottom_totopof="@+id/offer_detail"         app:layout_constraintleft_toleftof="parent"         app:layout_constraintstart_tostartof="parent"         app:layout_constrainttop_totopof="parent" />      <checkbox         android:id="@+id/offer_add_to_user"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginbottom="8dp"         android:layout_marginright="16dp"         android:layout_margintop="8dp"         android:button="@drawable/checkbox_background"         app:layout_constraintbottom_totopof="@+id/offer_detail"         app:layout_constraintright_torightof="parent"         app:layout_constrainttop_totopof="parent" />      <android.support.constraint.constraintlayout         android:id="@+id/offer_detail"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="16dp"         android:layout_marginstart="16dp"         android:layout_margintop="8dp"         app:layout_constraintbottom_tobottomof="parent"         app:layout_constraintend_toendof="parent"         app:layout_constrainthorizontal_bias="0.0"         app:layout_constraintstart_tostartof="parent"         app:layout_constrainttop_tobottomof="@+id/offer_description">          <textview             android:id="@+id/price_comparison"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginstart="8dp"             android:text="@{offer.pricecomparison()}"             app:layout_constraintbottom_totopof="@+id/disclaimer"             app:layout_constraintstart_tostartof="parent"             app:layout_constrainttop_totopof="parent"             tools:text="price comparison" />           <textview             android:id="@+id/disclaimer"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginstart="8dp"             android:text="@{offer.disclaimer()}"             app:layout_constraintbottom_tobottomof="parent"             app:layout_constraintstart_tostartof="parent"             app:layout_constrainttop_tobottomof="@+id/price_comparison"             tools:text="disclaimer" />      </android.support.constraint.constraintlayout>   </android.support.constraint.constraintlayout> 

   <android.support.constraint.constraintlayout     android:id="@+id/root_layout"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:animatelayoutchanges="true"     android:background="?attr/selectableitembackground">      <textview         android:id="@+id/offer_title"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="8dp"         android:layout_marginstart="8dp"         android:layout_margintop="8dp"         app:layout_constraintbottom_totopof="@+id/offer_price"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constraintstart_toendof="@+id/offer_image"         app:layout_constrainttop_totopof="parent"     />      <textview         android:id="@+id/offer_price"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="8dp"         android:layout_marginstart="8dp"         android:textcolor="@color/ica_red"         app:layout_constraintbottom_totopof="@+id/price_comparison"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constraintstart_toendof="@+id/offer_image"         app:layout_constrainttop_tobottomof="@+id/offer_title"         tools:text="34,50 kr/kg" />      <textview         android:id="@+id/price_comparison"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginbottom="8dp"         android:layout_marginend="8dp"         android:layout_marginstart="8dp"         app:layout_constraintbottom_totopof="@+id/offer_detail"         app:layout_constraintend_tostartof="@+id/offer_add_to_user"         app:layout_constraintstart_toendof="@+id/offer_image"         app:layout_constrainttop_tobottomof="@+id/offer_price"         tools:text="price comparison" />      <imageview         android:id="@+id/offer_image"         android:layout_width="48dp"         android:layout_height="48dp"         android:layout_marginstart="16dp"         android:layout_margintop="16dp"         app:layout_constraintleft_toleftof="parent"         app:layout_constraintstart_tostartof="parent"         app:layout_constrainttop_totopof="parent"         tools:ignore="contentdescription" />      <checkbox         android:id="@+id/offer_add_to_user"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_marginbottom="8dp"         android:layout_marginend="16dp"         android:layout_margintop="8dp"         android:button="@drawable/checkbox_background"         app:layout_constraintbottom_totopof="@+id/offer_detail"         app:layout_constraintright_torightof="parent"         app:layout_constrainttop_totopof="parent" />      <android.support.constraint.constraintlayout         android:id="@+id/offer_detail"         android:layout_width="0dp"         android:layout_height="wrap_content"         android:layout_marginend="16dp"         android:layout_marginstart="16dp"         app:layout_constraintbottom_tobottomof="parent"         app:layout_constraintend_toendof="parent"         app:layout_constrainthorizontal_bias="0.5"         app:layout_constraintstart_tostartof="parent"         app:layout_constrainttop_tobottomof="@+id/price_comparison">          <textview             android:id="@+id/offer_description"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginstart="8dp"             android:layout_margintop="0dp"             android:text="@{offer.sizeorquantity()}"             app:layout_constraintstart_tostartof="parent"             app:layout_constrainttop_totopof="parent"             tools:text="200g, ica eko" />           <textview             android:id="@+id/disclaimer"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginbottom="8dp"             android:layout_marginstart="8dp"             app:layout_constraintbottom_tobottomof="parent"             app:layout_constraintstart_tostartof="parent"             app:layout_constrainttop_tobottomof="@+id/offer_description"             tools:text="disclaimer" />      </android.support.constraint.constraintlayout>   </android.support.constraint.constraintlayout>




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