activity_main.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=".MainActivity">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/space"
        android:contentDescription="background"
        android:scaleType="centerCrop"
        tools:layout_editor_absoluteX="0dp"
        tools:layout_editor_absoluteY="0dp" />

    <Spinner
        android:id="@+id/simpleSpinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true" />


    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/button"
        android:text="Button"
        tools:layout_editor_absoluteX="140dp"
        tools:layout_editor_absoluteY="539dp" />

    <android.support.constraint.ConstraintLayout
        android:id="@+id/textInputLayout2"
        android:layout_width="394dp"
        android:layout_height="60dp"
        tools:layout_editor_absoluteX="8dp"
        tools:layout_editor_absoluteY="397dp">

        <android.support.design.widget.TextInputEditText
            android:id="@+id/textInputEditText2"
            android:layout_width="388dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="401dp"
            android:hint="hint"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    </android.support.constraint.ConstraintLayout>

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        tools:layout_editor_absoluteX="176dp"
        tools:layout_editor_absoluteY="352dp" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        tools:layout_editor_absoluteX="176dp"
        tools:layout_editor_absoluteY="240dp" />

    <android.support.design.widget.TextInputLayout
        android:layout_width="70dp"
        android:layout_height="wrap_content"
        tools:layout_editor_absoluteX="170dp"
        tools:layout_editor_absoluteY="167dp">

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

    <android.support.constraint.ConstraintLayout
        android:id="@+id/textInputLayout"
        android:layout_width="400dp"
        android:layout_height="60dp"
        tools:layout_editor_absoluteX="2dp"
        tools:layout_editor_absoluteY="167dp">

        <android.support.design.widget.TextInputEditText
            android:id="@+id/textInputEditText"
            android:layout_width="384dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="13dp"
            android:layout_marginStart="13dp"
            android:layout_marginTop="178dp"
            android:hint="hint"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    </android.support.constraint.ConstraintLayout>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        tools:layout_editor_absoluteX="176dp"
        tools:layout_editor_absoluteY="131dp" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        tools:layout_editor_absoluteX="176dp"
        tools:layout_editor_absoluteY="480dp" />

    <android.support.constraint.ConstraintLayout
        android:id="@+id/textInputLayout4"
        android:layout_width="378dp"
        android:layout_height="57dp"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="282dp">

        <android.support.design.widget.TextInputEditText
            android:id="@+id/textInputEditText4"
            android:layout_width="400dp"
            android:layout_height="60dp"
            android:layout_marginBottom="80dp"
            android:layout_marginTop="8dp"
            android:hint="hint"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.433" />
    </android.support.constraint.ConstraintLayout>


</android.support.constraint.ConstraintLayout>