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I want to import some string from interface constant in android layout data binding.
Gradle build fails if i use this line
android:drawableRight="@{item.icon.equalsIgnoreCase(Constants.FOOD_TYPE_NON_VEG)? @drawable/ic_nonveg : @drawable/ic_veg}"
But below line works
android:drawableRight="@{item.icon.equalsIgnoreCase(`nonveg`)? @drawable/ic_nonveg : @drawable/ic_veg}"
Sample xml is
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<variable
name="Constants"
type="com.amelio.utils.Constants"/>
</data>
<TextView
style="@style/tvVerySmall"
android:layout_width="match_parent"
android:drawableRight="@{item.icon.equalsIgnoreCase(`nonveg`)? @drawable/ic_nonveg : @drawable/ic_veg}"
/>
</layout>
and Constants interface is
public interface Constants {
String FOOD_TYPE_NON_VEG = "nonveg";
}
How to import string from interface in xml layout in databinding?
296
Android data binding generates a Binding class based on this layout. This class holds all the bindings from the layout properties, i.e., the defined variable to the corresponding views. It also provides generated setters for your data elements from the layout.
The user variable within data describes a property that may be used within this layout. Android data binding generates a Binding class based on this layout. This class holds all the bindings from the layout properties, i.e., the defined variable to the corresponding views. It also provides generated setters for your data elements from the layout.
To enable the usage of data binding in your Android application, add the following snippet to the app/build.gradle file. 1.3. Data binding for events via listener bindings and method references Events may be bound to handler methods directly, similar to the way android:onClick can be assigned to a method in the activity.
Android offers support to write declarative layouts using data binding. This minimizes the necessary code in your application logic to connect to the user interface elements. The usage of data binding requires changes in your layout files. Such layout files starts with a layout root tag followed by a data element and a view root element.
Use import, not variable:
<data>
<import type="yourfullpackagepath.Constants"/>
</data>
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