Now very easy to bind data and it's view (data binding) in android
https://github.com/datanapps/AndroidDataBinding/blob/master/screens/app-debug.apk
Its have just a few steps :
- Data binding can lead to faster development times
- Faster execution times (more then findviewbyid)
- Stronger readability (More readable and maintained code).
- Remove boilerplate code
- Auto generated class (it's true it will increase the app size)
- Hard to debug - depends, like readability, of what you are used to.
android { dataBinding.enabled = true } activity_book_detail.xml
<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android" > <data> <variable name="book" type="com.example.androiddatabinding.Book"/> </data> <androidx.constraintlayout.widget.ConstraintLayout 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=".BookDetailActivity" > <TextView android:id="@+id/name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{book.name}" android:textSize="20sp" android:textStyle="bold" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" /> <TextView android:id="@+id/email" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{book.email}" android:textSize="20sp" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toBottomOf="@+id/name" /> </androidx.constraintlayout.widget.ConstraintLayout> </layout> Model : Book.class
package com.example.androiddatabinding; public class Book { private String name; private String email; public Book(String name, String email) { this.name = name; this.email = email; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } } Activity : BookDetailActivity.class
public class BookDetailActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.activity_book_detail); ActivityBookDetailBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_book_detail); Book book = new Book("Book", "book@gmail.com"); binding.setBook(book); } }