MobileDevelopment/AppMobile/app/src/main/res/layout/activity_registration.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
    android:background="@color/main_green"
    android:onClick="onCancel"
    tools:context=".RegistrationActivity">

    <TextView
        android:id="@+id/regConfirmPasswordText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="@string/reg_confirm_password"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.18"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regPassword" />

    <EditText
        android:id="@+id/regName"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:ems="10"
        android:hint="@string/reg_name_hint"
        android:inputType="text"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.477"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regNameText" />

    <EditText
        android:id="@+id/regEmail"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:ems="10"
        android:hint="@string/reg_email_hint"
        android:inputType="textEmailAddress"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.477"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regEmailText" />

    <EditText
        android:id="@+id/regPassword"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:ems="10"
        android:hint="@string/reg_password_hint"
        android:inputType="textPassword"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.477"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regPasswordText" />

    <EditText
        android:id="@+id/regConfirmPassword"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:ems="10"
        android:hint="@string/reg_confirm_password_hint"
        android:inputType="textPassword"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.477"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regConfirmPasswordText" />

    <Button
        android:id="@+id/btn_registarion"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:layout_marginTop="48dp"
        android:background="@drawable/active_back"
        android:onClick="onReg"
        android:text="@string/reg_button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.495"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regConfirmPassword" />

    <TextView
        android:id="@+id/regNameText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="64dp"
        android:text="@string/reg_name"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.143"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/Logo" />

    <TextView
        android:id="@+id/regEmailText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="@string/email"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.142"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regName" />

    <ImageView
        android:id="@+id/Logo"
        android:layout_width="347dp"
        android:layout_height="152dp"
        android:layout_marginTop="32dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/todoka" />

    <TextView
        android:id="@+id/regPasswordText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="@string/reg_password"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.153"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/regEmail" />

    <Button
        android:id="@+id/btn_cancel_reg"
        android:layout_width="300dp"
        android:layout_height="48dp"
        android:background="@android:color/transparent"
        android:onClick="onCancel"
        android:text="@string/reg_return"
        android:textColor="@color/black"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btn_registarion" />

</androidx.constraintlayout.widget.ConstraintLayout>