The dotted_line_order ImageView constrained to order_date_time TextView Using app:layout_constraintTop_toBottomOf="@+id/order_date_time".

While the overlapped order_items TextView constrained to dotted_line_order ImageView with app:layout_constraintBottom_toTopOf="@+id/dotted_line_order".

Both constraints will make the order_items overlaps with the dotted_line_order.

You need to replace the 1st constraint to be constrained to the order_items instead of the order_date_time, so it should be app:layout_constraintTop_toBottomOf="@+id/order_items"

<ImageView
    android_id="@+id/dotted_line_order"
    android_layout_width="match_parent"
    android_layout_height="5dp"
    android_layout_marginTop="80dp"
    android_layerType="software"
    app_layout_constraintTop_toBottomOf="@+id/order_items" 
    android_src="@drawable/dotted" />

Also, check if 80dp margin as it seems some how big.

I have a TextView to display order items and quantity. But it overlaps with the divider lines above and below. How to fix this?

<?xml version="1.0" encoding="utf-8"?><!--https://www.youtube.com/watch?v=18VcnYN5_LM !-->
<androidx.constraintlayout.widget.ConstraintLayout 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"
    android_layout_width="match_parent"
    android_layout_height="wrap_content"
    android_animateLayoutChanges="true"
    android_animationCache="true"
    android_gravity="center|start"
    android_orientation="vertical"
    android_padding="0dp">


    <com.google.android.material.card.MaterialCardView
        android_layout_width="match_parent"
        android_layout_height="wrap_content"
        android_layout_marginStart="5dp"
        android_layout_marginEnd="5dp"
        android_layout_marginBottom="15dp"
        android_layout_marginTop="10dp"
        android_elevation="50dp"
        app_strokeColor="@color/grey600"
        app_strokeWidth="1dp"
        app_layout_constraintBottom_toBottomOf="parent"
        app_layout_constraintEnd_toEndOf="parent"
        app_layout_constraintStart_toStartOf="parent"
        app_layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android_layout_width="match_parent"
            android_layout_height="match_parent">

            <com.skydoves.androidribbon.RibbonView
                android_id="@+id/order_status_ribbon"
                android_layout_width="wrap_content"
                android_layout_height="wrap_content"
                android_fontFamily="@font/poppins_bold"
                android_letterSpacing=".10"
                android_text="@string/order_status"
                android_textColor="#FFFFFF"
                android_textSize="12sp"
                app_layout_constraintBottom_toBottomOf="parent"
                app_layout_constraintStart_toStartOf="parent"
                app_layout_constraintTop_toTopOf="parent"
                app_layout_constraintVertical_bias="0.0"
                app_ribbon_background_color="@color/primaryYellow"
                app_ribbon_padding_top="4dp"
                app_ribbon_ribbonRadius="4dp"
                app_textAllCaps="true" />

            <TextView
                android_id="@+id/order_id"
                android_layout_width="wrap_content"
                android_layout_height="wrap_content"
                android_layout_marginStart="8dp"
                android_layout_marginTop="8dp"
                android_fontFamily="@font/poppins_semibold"
                android_text="@string/sample_order_id"
                android_textColor="#000000"
                android_textSize="14sp"
                app_layout_constraintStart_toStartOf="parent"
                app_layout_constraintTop_toBottomOf="@+id/order_status_ribbon" />

            <TextView
                android_id="@+id/order_date_time"
                android_layout_width="wrap_content"
                android_layout_height="wrap_content"
                android_layout_marginStart="8dp"
                android_layout_marginTop="4dp"
                android_fontFamily="@font/poppins"
                android_text="@string/date_amp_time"
                android_textColor="@color/grey600"
                android_textSize="11sp"
                app_layout_constraintStart_toStartOf="parent"
                app_layout_constraintTop_toBottomOf="@+id/order_id" />

            <ImageView
                android_id="@+id/dotted_line_order_after_date_time"
                android_layout_width="match_parent"
                android_layout_height="5dp"
                android_layout_marginTop="8dp"
                android_layerType="software"
                android_src="@drawable/dotted"
                app_layout_constraintTop_toBottomOf="@+id/order_date_time"
                tools_layout_editor_absoluteX="0dp" />


            <TextView
                android_id="@+id/order_items"
                android_layout_width="wrap_content"
                android_layout_height="wrap_content"
                android_layout_margin="16dp"
                android_fontFamily="@font/poppins"
                android_text="@string/order_items_and_quantity"
                android_textColor="@color/black"
                app_layout_constraintBottom_toTopOf="@+id/dotted_line_order"
                app_layout_constraintStart_toStartOf="parent"
                app_layout_constraintTop_toBottomOf="@+id/dotted_line_order_after_date_time"
                app_layout_constraintVertical_bias="0.418" />

            <ImageView
                android_id="@+id/dotted_line_order"
                android_layout_width="match_parent"
                android_layout_height="5dp"
                android_layout_marginTop="80dp"
                android_layerType="software"
                android_src="@drawable/dotted"
                app_layout_constraintTop_toBottomOf="@+id/order_date_time"
                tools_layout_editor_absoluteX="0dp" />

            <TextView
                android_layout_width="match_parent"
                android_layout_height="wrap_content"
                android_layout_marginTop="4dp"
                android_fontFamily="@font/poppins_medium"
                android_gravity="center"
                android_paddingBottom="10dp"
                android_text="@string/view_details"
                android_textColor="@color/black"
                app_layout_constraintTop_toBottomOf="@+id/dotted_line_order"
                tools_layout_editor_absoluteX="0dp" />


        </androidx.constraintlayout.widget.ConstraintLayout>
    </com.google.android.material.card.MaterialCardView>
</androidx.constraintlayout.widget.ConstraintLayout>

Sample image is found in https://imgur.com/a/EPsUeI3

As you can see in the image the order items and quantity TextView is overlapping with ImageView. The text for TextView comes from a StringBuffer

 sb.append(n.getInt("quantiy"));
 sb.append(" X ");
 sb.append(n.getString("name"));
 sb.append("n");
 holder.orderItems.setText(sb);