why we used mvvm instead of mvc
Whereas the MVC format is specifically designed to create a separation of concerns between the model and view, the MVVM format with data-binding is designed specifically to allow the view and model to communicate directly with each other. This is why single page applications work very well with ViewModels.mvvm java
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="https://schemas.android.com/apk/res/android"
xmlns:bind="https://schemas.android.com/tools">
<data>
<variable
name="viewModel"
type="com.journaldev.androidmvvmbasics.viewmodels.LoginViewModel" />
</data>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="8dp"
android:orientation="vertical">
<EditText
android:id="@+id/inEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Email"
android:inputType="textEmailAddress"
android:padding="8dp"
android:text="@={viewModel.userEmail}" />
<EditText
android:id="@+id/inPassword"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword"
android:padding="8dp"
android:text="@={viewModel.userPassword}" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:onClick="@{()-> viewModel.onLoginClicked()}"
android:text="LOGIN"
bind:toastMessage="@{viewModel.toastMessage}" />
</LinearLayout>
</ScrollView>
</layout>Copyright © 2021 Codeinu
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