2

<?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="com.example.admin.konwerterwalut.EuroActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="145dp"
        android:layout_height="37dp"
        android:layout_marginBottom="8dp"
        android:layout_marginStart="32dp"
        android:layout_marginTop="8dp"
        android:text="     ZŁOTE:"
        android:textSize="25sp"
        app:layout_constraintBottom_toTopOf="@+id/editText"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.735" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="145dp"
        android:layout_height="57dp"
        android:layout_marginBottom="20dp"
        android:layout_marginStart="32dp"
        android:ems="10"
        android:inputType="numberDecimal"
        app:layout_constraintBottom_toTopOf="@+id/button3"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/button3"
        android:layout_width="145dp"
        android:layout_height="67dp"
        android:layout_marginBottom="296dp"
        android:layout_marginStart="32dp"
        android:onClick="ZŁnaEU"
        android:text="Przelicz Zł na Eu"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="145dp"
        android:layout_height="57dp"
        android:layout_marginBottom="20dp"
        android:layout_marginEnd="16dp"
        android:ems="10"
        android:inputType="numberDecimal"
        app:layout_constraintBottom_toTopOf="@+id/button4"
        app:layout_constraintEnd_toEndOf="parent" />

    <Button
        android:id="@+id/button4"
        android:layout_width="145dp"
        android:layout_height="67dp"
        android:layout_marginBottom="296dp"
        android:layout_marginEnd="16dp"
        android:onClick="EUnaZŁ"
        android:text="Przelicz Eu na Zł"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="145dp"
        android:layout_height="37dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginTop="8dp"
        android:text="      EURO:"
        android:textSize="25sp"
        app:layout_constraintBottom_toTopOf="@+id/editText2"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.735" />

    <Button
        android:id="@+id/button5"
        android:layout_width="145dp"
        android:layout_height="67dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:onClick="Reset"
        android:text="RESET"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.542"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.619" />
</android.support.constraint.ConstraintLayout>