erpsuiteandroid/ApexDrivers/apexmobile/src/main/res/layout/commu_item_header.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="match_parent">

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="4dp"
        android:layout_marginStart="4dp"
        android:layout_marginTop="4dp"
        android:text="Communication To Apex:"
        android:textStyle="bold"
        android:textColor="#ff0000"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/comm_to_tv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="4dp"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:layout_marginStart="4dp"
        android:text="TextView"
        android:textColor="#ff0000"
        app:layout_constraintStart_toStartOf="@+id/textView2"
        app:layout_constraintTop_toBottomOf="@+id/textView2"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/textView2" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:text="CC(separated by ;) :"
        android:textStyle="bold"
        android:textColor="#ff0000"
        app:layout_constraintStart_toStartOf="@+id/textView2"
        app:layout_constraintTop_toBottomOf="@id/comm_to_tv"/>

    <EditText
        android:id="@+id/comm_cc_tv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:ems="10"
        android:textColor="#000000"
        android:inputType="textEmailAddress"
        app:layout_constraintEnd_toStartOf="@+id/comm_contact_btn"
        app:layout_constraintStart_toStartOf="@+id/textView2"
        app:layout_constraintTop_toBottomOf="@+id/textView5"/>

    <ImageButton
        android:id="@+id/comm_contact_btn"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/bg_button"
        android:contentDescription="TODO" android:src="@drawable/ic_contact"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@+id/comm_cc_tv"
        app:srcCompat="@drawable/ic_contact"/>

</android.support.constraint.ConstraintLayout>