storm_layout.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">
    tools:context=".Storm">

    <EditText
        android:id="@+id/inputDuration"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="89dp"
        android:ems="10"
        android:inputType="time"
        app:layout_constraintBottom_toTopOf="@+id/buttonNext"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/textDuration"
        android:layout_width="match_parent"
        android:layout_height="47dp"
        android:layout_marginBottom="32dp"
        android:foregroundGravity="center"
        android:gravity="center"
        android:text="Storm Duration"
        android:textSize="36sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/inputDuration"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent" />

    <EditText
        android:id="@+id/inputStart"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="53dp"
        android:ems="10"
        android:inputType="time"
        app:layout_constraintBottom_toTopOf="@+id/textDuration"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/textStart"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="32dp"
        android:foregroundGravity="center"
        android:gravity="center"
        android:text="Storm Start Time"
        android:textSize="36sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/inputStart"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/buttonNext"
        android:layout_width="match_parent"
        android:layout_height="70dp"
        android:layout_marginBottom="32dp"
        android:text="Next"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent" />

</android.support.constraint.ConstraintLayout>