activity_add_event.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="16dp"
        tools:context="com.eventtracker.com.eventtracker.AddEventActivity">

        <android.support.design.widget.TextInputLayout
            android:id="@+id/title_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <EditText
                android:id="@+id/title_edit_text"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:hint="Event for..." />

        </android.support.design.widget.TextInputLayout>

        <TextView
            android:id="@+id/date_title_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/title_layout"
            android:layout_marginTop="16dp"
            android:text="Select date time"
            android:textColor="@android:color/black"
            android:textSize="20sp" />

        <TextView
            android:id="@+id/date_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/date_title_text_view"
            android:layout_marginTop="16dp" />

        <TextView
            android:id="@+id/time_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/date_text_view"
            android:layout_marginTop="12dp" />

    </RelativeLayout>
</layout>