Mastering Android Development with Kotlin

Data binding

Android supports a mechanism for data binding so that data is bound with views and the glue code is minimized. Enable data binding by updating your build Gradle configuration as follows:

     android { 
       .... 
       dataBinding { 
        enabled = true 
       } 
     } 
     ... 
     dependencies { 
      ... 
      kapt 'com.android.databinding:compiler:2.3.1' 
    } 
    ...  

Now, you can define your binding expressions. Take a look at the following example:

 <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android"> <data> <variable name="note" type="com.journaler.model.Note" /> </data> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="wrap_content" ...