activity_main.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"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/email"
        android:layout_width="380dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="64dp"
        android:background="@drawable/kadi"
        android:ems="10"
        android:hint="Email"
        android:inputType="textEmailAddress"
        android:textAlignment="center"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.516"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView3" />

    <EditText
        android:id="@+id/password"
        android:layout_width="380dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="44dp"
        android:background="@drawable/kadi"
        android:ems="10"
        android:hint="Şifre"
        android:inputType="textPassword"
        android:textAlignment="center"
        app:layout_constraintHorizontal_bias="0.483"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/email"
        app:layout_goneMarginTop="30dp" />

    <Button
        android:id="@+id/signIN"
        android:layout_width="148dp"
        android:layout_height="67dp"
        android:layout_marginTop="24dp"
        android:background="@drawable/giris"
        android:backgroundTint="#0ED6B9"
        android:text="Giriş"
        android:textColor="#ffffff"
        android:textSize="15sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/password"
        app:layout_constraintVertical_bias="0.15" />

    <TextView
        android:id="@+id/forgotPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="50dp"
        android:layout_marginTop="25dp"
        android:text="Şifremi Unuttum"
        android:textSize="16sp"
        android:textStyle="bold"
        android:textColor="@color/blue"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toBottomOf="@id/signIN" />

    <TextView
        android:id="@+id/register"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="80dp"
        android:layout_marginEnd="76dp"
        android:text="Kayıt Ol"
        android:textSize="16sp"
        android:textColor="@color/blue"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintLeft_toRightOf="@id/forgotPassword"
        app:layout_constraintTop_toTopOf="@id/forgotPassword"
        app:layout_constraintVertical_bias="0.0" />

    <ProgressBar
        android:id="@+id/progressBar"
        style="?android:attr/progressBarStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:visibility="gone"
        tools:ignore="MissingConstraints"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>

    <ImageView
        android:id="@+id/imageView3"
        android:layout_width="276dp"
        android:layout_height="238dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.028"
        app:srcCompat="@drawable/logosml" />


</androidx.constraintlayout.widget.ConstraintLayout>