Desain Login Layout

<?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">

    <ImageView android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:background="@drawable/blue"
               app:layout_constraintTop_toTopOf="parent"
               app:layout_constraintStart_toStartOf="parent"
               app:layout_constraintEnd_toEndOf="parent" android:id="@+id/imageView"/>

    <TextView android:layout_width="match_parent"
              android:text="@string/Login"
              android:id="@+id/textView"
              android:textAlignment="center"
              android:textSize="45sp"
              android:textColor="#fff"
              android:layout_height="wrap_content"
              android:layout_marginTop="52dp"
              app:layout_constraintTop_toTopOf="@+id/imageView"
              app:layout_constraintStart_toStartOf="@+id/imageView"
              app:layout_constraintEnd_toEndOf="parent"
              app:layout_constraintHorizontal_bias="0.0"/>

    <View android:layout_width="match_parent"
          android:orientation="vertical"
          android:background="@drawable/background_putih"
          android:layout_height="500dp"
          app:layout_constraintStart_toStartOf="parent" android:layout_marginStart="10dp"
          app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="10dp" android:layout_marginTop="136dp"
          app:layout_constraintTop_toTopOf="@+id/imageView" app:layout_constraintHorizontal_bias="0.0"/>

    <ImageView android:layout_width="150dp"
               android:background="@drawable/tony"
               android:layout_height="150dp"
               android:layout_marginTop="172dp"
               app:layout_constraintTop_toTopOf="@+id/imageView" app:layout_constraintEnd_toEndOf="@+id/textView"
               android:layout_marginEnd="8dp" app:layout_constraintStart_toStartOf="@+id/imageView"
               android:layout_marginStart="8dp" app:layout_constraintHorizontal_bias="0.497"/>

    <EditText android:layout_width="match_parent"
              android:inputType="text"
              android:background="@drawable/custom_editext"
              android:hint="@string/UserName"
              android:textAlignment="center"
              android:textSize="30sp"
              android:layout_height="wrap_content"
              android:layout_marginTop="368dp"
              app:layout_constraintTop_toTopOf="@+id/imageView" app:layout_constraintStart_toStartOf="parent"
              android:layout_marginStart="25dp" app:layout_constraintEnd_toEndOf="parent"
              android:layout_marginEnd="25dp" android:id="@+id/editText"/>

    <EditText android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:background="@drawable/custom_editext"
              android:hint="@string/Password"
              android:textAlignment="center"
              android:textSize="30sp"
              android:inputType="textPassword"
              app:layout_constraintTop_toTopOf="parent"
              android:layout_marginTop="456dp"
              app:layout_constraintStart_toStartOf="parent"
              app:layout_constraintEnd_toEndOf="parent"
              android:layout_marginStart="25dp"
              android:layout_marginEnd="25dp" android:id="@+id/editText2"/>

    <Button android:layout_width="match_parent"
            android:text="@string/Login"
            android:id="@+id/customBtn"
            android:background="@drawable/custom_btn"
            android:textColor="#fff"
            android:layout_height="wrap_content"
            app:layout_constraintTop_toTopOf="parent"
            android:layout_marginTop="548dp" app:layout_constraintStart_toStartOf="parent"
            android:layout_marginStart="25dp" app:layout_constraintEnd_toEndOf="parent"
            android:layout_marginEnd="25dp" app:layout_constraintHorizontal_bias="0.0"/>

</android.support.constraint.ConstraintLayout>