Bottom Sheet Dialog jumps up after populating RecyclerView

Question

I have run into a peculiar issue. The flow of the app is as below:

1. Trigger bottom sheet dialog.
2. The dialog fragment makes an api call to the server.
3. A spinner is displayed while waiting for the response
4. When response is received, the Recycler view along with with some TextViews is populated.
5. As soon as the Recycler View is updated, the dialog jumps up from bottom, and is no longer attached to the base. However, if we scroll the Recycler View, the returns to the normal position.

Actual

Expected

Bottom Sheet Dialog Relevant Code:

        //We have to override this method to ensure that the Bottom Sheet opens in expanded mode.
        @NonNull
        @Override
        public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {

            BottomSheetDialog dialog = (BottomSheetDialog) super.onCreateDialog(savedInstanceState);

            dialog.setOnShowListener(dialog1 -> {
                BottomSheetDialog d = (BottomSheetDialog) dialog1;

                FrameLayout bottomSheet = d.findViewById(com.google.android.material.R.id.design_bottom_sheet);
                BottomSheetBehavior.from(bottomSheet).setState(BottomSheetBehavior.STATE_EXPANDED);
            });

            return dialog;
        }

@Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        views.layoutCartItem.setLayoutManager(new LinearLayoutManager(getContext()));
        views.layoutCartItem.setItemAnimator(new DefaultItemAnimator());
    viewModel.getOrderConfirmation().observe(this, res -> {
                if(res.isSuccess()){
                    views.loader.setVisibility(View.GONE);
                    views.layoutImage.setVisibility(View.VISIBLE);
                    showViews(res.value);
                } else if(res.isError()) {
                    views.loader.setVisibility(View.GONE);
                } else {
                    views.loader.setVisibility(View.VISIBLE);
                    views.layoutImage.setVisibility(View.GONE);
                }
            });
    }

    private void showViews(CartOrderSummary summary){
            this.orderSummary = summary;
            showItems(summary.items, summary.currency);
            views.txtName.setText(summary.name);
            views.txtCuisine.setText(summary.cuisineType);
            setTypeIcon(summary.type);
            views.txtAddress.setText(summary.address);

            views.txtItemCount.setText(summary.itemCount + " ITEMS");
            views.txtTax.setText(String.format("%.2f",  summary.tax));
            views.txtTip.setText(String.format("%.2f",  0f));
            views.txtDiscount.setText(String.format("%.2f",  (summary.total - summary.subTotal)));
            views.txtCartTotal.setText(String.format("%.2f",  summary.total));

            views.btShowOnMap.setOnClickListener(v->showMap(summary));


        }

The layout

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="525dp"
        android:minHeight="525dp"
        android:theme="@style/AppTheme">


        <TextView
            android:id="@+id/txtTitle"
            android:layout_width="0dp"
            android:layout_height="22dp"
            android:layout_marginStart="12dp"
            android:layout_marginTop="12dp"
            android:layout_marginEnd="12dp"
            android:fontFamily="@font/avenir_next_lt_pro_regular"
            android:text="Order Confirmation"
            android:textColor="#000000"
            android:textSize="18sp"
            app:layout_constraintEnd_toStartOf="@+id/button_close_drawer"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />


        <TextView
            android:id="@+id/txtCaption"
            android:layout_width="0dp"
            android:layout_height="14dp"
            android:layout_marginStart="12dp"
            android:layout_marginTop="4dp"
            android:layout_marginEnd="12dp"
            android:fontFamily="@font/avenir_next_lt_pro_regular"
            android:text="Dear customer, please confirm the order."
            android:textColor="@color/grey_40"
            android:textSize="12sp"
            app:layout_constraintEnd_toStartOf="@+id/button_close_drawer"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

        <ImageButton
            android:id="@+id/button_close_drawer"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
            android:layout_marginEnd="16dp"
            android:background="?attr/selectableItemBackgroundBorderless"
            android:contentDescription="@string/add_address"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/ic_close_black_24dp" />



        <View
            android:id="@+id/title_divider"
            android:layout_width="0dp"
            android:layout_height="1dp"
            android:layout_marginTop="14dp"
            android:background="#FFDADADA"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/txtCaption" />

        <androidx.core.widget.NestedScrollView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toBottomOf="@id/title_divider"
            app:layout_constraintBottom_toTopOf="@id/btPay"
            >


            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/layoutImage"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:elevation="9dp"
                android:paddingTop="5dp"
                >
                <androidx.constraintlayout.widget.Guideline
                    android:id="@+id/start"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    app:layout_constraintGuide_begin="12dp" />

                <androidx.constraintlayout.widget.Guideline
                    android:id="@+id/end"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"
                    app:layout_constraintGuide_end="12dp" />



                <TextView
                    android:id="@+id/txtName"
                    android:layout_width="0dp"
                    android:layout_height="24dp"
                    android:layout_marginTop="6dp"
                    android:layout_marginEnd="12dp"
                    android:textColor="@color/black"
                    android:textSize="20sp"
                    android:transitionName="NAME"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="@id/start"
                    app:layout_constraintTop_toTopOf="parent"
                    tools:text="Las Iguanas" />
                <ImageView
                    android:id="@+id/imgType"
                    android:layout_width="16dp"
                    android:layout_height="16dp"
                    android:layout_marginEnd="2dp"
                    app:layout_constraintEnd_toStartOf="@+id/txtType"
                    app:layout_constraintTop_toTopOf="@+id/txtType"
                    app:srcCompat="@drawable/ic_type_cafe" />

                <TextView
                    android:id="@+id/txtType"
                    android:layout_width="wrap_content"
                    android:layout_height="16dp"
                    android:layout_marginEnd="12dp"
                    android:layout_marginTop="14dp"
                    android:fontFamily="@font/avenir_next_lt_pro_bold"
                    android:gravity="bottom"
                    android:lineHeight='18dp'
                    android:textSize="12sp"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    tools:text="Cafe" />
                <TextView
                    android:id="@+id/txtCuisine"
                    android:layout_width="0dp"
                    android:layout_height="20dp"
                    android:layout_marginTop="2dp"
                    android:layout_marginEnd="12dp"
                    android:textColor="@color/black"
                    android:textSize="14sp"
                    android:transitionName="CUISINE"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintStart_toStartOf="@id/start"
                    app:layout_constraintTop_toBottomOf="@id/txtName"
                    tools:text="Tex-Mex, Spicy Veggie" />


                <View
                    android:id="@+id/dividerTitle"
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_marginTop="17dp"
                    android:background="@color/grey"
                    app:layout_constraintTop_toBottomOf="@id/txtCuisine" />


                <ImageView
                    android:id="@+id/imgLocationPin"
                    android:layout_width="20dp"
                    android:layout_height="20dp"
                    android:layout_marginTop="9dp"
                    android:src="@drawable/ic_location_pin"
                    app:layout_constraintStart_toStartOf="@id/start"
                    app:layout_constraintTop_toBottomOf="@id/dividerTitle" />

                <TextView
                    android:id="@+id/txtAddress"
                    android:layout_width="0dp"
                    android:layout_height="36dp"
                    android:layout_marginStart="4dp"
                    android:layout_marginTop="10dp"
                    android:layout_marginEnd="4dp"
                    android:maxLines="2"
                    android:minLines="2"
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    app:layout_constraintEnd_toStartOf="@id/btShowOnMap"
                    app:layout_constraintStart_toEndOf="@id/imgLocationPin"
                    app:layout_constraintTop_toBottomOf="@id/dividerTitle"
                    tools:text="3253 Delawae Avenue, San\n Francisco, CA- California, 94107" />


                <com.google.android.material.button.MaterialButton
                    android:id="@+id/btShowOnMap"
                    style="@style/Widget.MaterialComponents.Button.TextButton"
                    android:layout_width="wrap_content"
                    android:layout_height="20dp"
                    android:layout_marginTop="10dp"
                    android:includeFontPadding="false"
                    android:insetTop="0dp"
                    android:insetBottom="0dp"
                    android:text="Show on Map"
                    android:textAlignment="viewEnd"
                    android:textAllCaps="false"
                    android:textColor="@color/pinkishOrange"
                    android:textSize="12sp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/dividerTitle" />


                <View
                    android:id="@+id/dividerAddress"
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_marginTop="15dp"
                    android:background="@color/grey"
                    app:layout_constraintTop_toBottomOf="@id/txtAddress" />


                <androidx.recyclerview.widget.RecyclerView
                    android:id="@+id/layoutCartItem"
                    android:layout_width="0dp"
                    android:layout_height="300dp"
                    android:orientation="vertical"
                    app:layout_constraintStart_toStartOf="@id/start"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/dividerAddress"
                    >
                </androidx.recyclerview.widget.RecyclerView>
                <View
                    android:id="@+id/dividerItemList"
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_marginTop="15dp"
                    android:background="@color/grey"
                    app:layout_constraintTop_toBottomOf="@id/layoutCartItem" />

                <TextView
                    android:id="@+id/txtItemCount"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/dividerItemList"
                    android:layout_marginTop="20dp"
                    tools:text="10 items"
                    android:textColor="@color/black"
                    android:textSize="10sp"
                    />

                <TextView
                    android:id="@+id/txtTip"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/txtItemCount"
                    android:layout_marginTop="6dp"
                    tools:text="10 items"
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />

                <TextView
                    android:id="@+id/txtTipLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toStartOf="@id/txtTip"
                    app:layout_constraintTop_toTopOf="@id/txtTip"
                    app:layout_constraintBottom_toBottomOf="@id/txtTip"

                    android:text="Tip: "
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />

                <TextView
                    android:id="@+id/txtTax"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/txtTip"
                    android:layout_marginTop="6dp"
                    tools:text="10 items"
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />

                <TextView
                    android:id="@+id/txtTaxLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toStartOf="@id/txtTax"
                    app:layout_constraintTop_toTopOf="@id/txtTax"
                    app:layout_constraintBottom_toBottomOf="@id/txtTax"
                    android:text="Tax: "
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />


                <TextView
                    android:id="@+id/txtDiscount"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/txtTax"
                    android:layout_marginTop="6dp"
                    tools:text="10 items"
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />

                <TextView
                    android:id="@+id/txtDiscountLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="12dp"
                    app:layout_constraintEnd_toStartOf="@id/txtDiscount"
                    app:layout_constraintTop_toTopOf="@id/txtDiscount"
                    app:layout_constraintBottom_toBottomOf="@id/txtDiscount"
                    android:text="Discount: "
                    android:textColor="@color/black"
                    android:textSize="12sp"
                    />

                <TextView
                    android:id="@+id/txtCartTotal"
                    android:layout_width="wrap_content"
                    android:layout_height="20dp"
                    app:layout_constraintEnd_toEndOf="@id/end"
                    app:layout_constraintTop_toBottomOf="@id/txtDiscount"
                    app:layout_constraintBottom_toBottomOf="parent"
                    android:layout_marginTop="14dp"
                    tools:text="10 items"
                    android:textColor="@color/black"
                    android:layout_marginBottom="24dp"
                    android:textSize="16sp"
                    />

                <TextView
                    android:id="@+id/txtCartTotalLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="20dp"
                    app:layout_constraintEnd_toStartOf="@id/txtCartTotal"
                    app:layout_constraintTop_toTopOf="@id/txtCartTotal"
                    app:layout_constraintBottom_toBottomOf="@id/txtCartTotal"
                    android:text="Total Due: "
                    android:textColor="@color/black"
                    android:textSize="16sp"
                    />


            </androidx.constraintlayout.widget.ConstraintLayout>

        </androidx.core.widget.NestedScrollView>

        <ProgressBar
            android:visibility="gone"
            android:id="@+id/loader"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toBottomOf="@id/title_divider"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toTopOf="@id/btPay"

            />
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="12dp"
            android:src="@drawable/shadow_top"
            app:layout_constraintBottom_toTopOf="@id/btPay"
            android:layout_marginBottom="12dp"
            android:elevation="30dp"
            />
        <View
            android:layout_width="match_parent"
            android:layout_height="64dp"
            android:background="@color/white"
            app:layout_constraintBottom_toBottomOf="parent"
            />
        <com.google.android.material.button.MaterialButton
            android:id="@+id/btPay"
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="12dp"
            android:layout_marginEnd="10dp"
            android:layout_marginBottom="12dp"
            android:backgroundTint="@color/grass"
            android:enabled="true"
            android:gravity="center"
            android:insetTop="0dp"
            android:insetBottom="0dp"
            android:paddingRight="4dp"
            android:text="Pay"
            android:textAllCaps="false"
            android:textColor="@color/white"
            android:textSize="16sp"
            android:elevation="30dp"
            app:layout_constraintBottom_toBottomOf="parent" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

Answer 1

It worked for me by changing View.GONE to View.INVISIBLE, and removing android:animateLayoutChanges="true". if that does not work try using BottomSheetDialogFragment