form validation with kotlin flow,stateFlow

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">

    <TextView
        android:id="@+id/txtErrorMessage"
        android:layout_width="0dp"
        android:layout_marginTop="16dp"
        android:textColor="#F36060"
        android:layout_marginHorizontal="24dp"
        android:textSize="16sp"
        android:textAlignment="center"
        tools:text="Error Message"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_height="wrap_content" />

    <EditText
        android:id="@+id/txtEmail"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="56dp"
        android:layout_marginHorizontal="24dp"
        android:hint="email"
        android:textAlignment="center"
        android:textColor="#1B1717"
        android:textSize="18sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtErrorMessage" />

    <EditText
        android:id="@+id/txtPassword"
        android:layout_marginHorizontal="24dp"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:hint="Password"
        android:inputType="textPassword"
        android:textAlignment="center"
        android:textColor="#1B1717"
        android:textSize="18sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtEmail" />

    <EditText
        android:layout_marginHorizontal="24dp"
        android:id="@+id/txtPasswordAgain"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:hint="Password Again"
        android:inputType="textPassword"
        android:textAlignment="center"
        android:textColor="#1B1717"
        android:textSize="18sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtPassword" />


    <com.google.android.material.button.MaterialButton
        android:id="@+id/btnLogin"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:insetTop="0dp"
        android:insetBottom="0dp"
        android:letterSpacing="0"
        android:text="Login"
        android:textAllCaps="false"
        android:layout_marginHorizontal="24dp"
        app:cornerRadius="30dp"
        android:layout_marginTop="36dp"
        app:backgroundTint="#171B17"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtPasswordAgain" />


</androidx.constraintlayout.widget.ConstraintLayout>