Use data binding to set View visibility

android android-databinding
Konstantin Konopko picture Konstantin Konopko · Jun 7, 2017 · Viewed 66.4k times · Source

Trying to set visibility of View using custom variable, but error occurs: Identifiers must have user defined types from the XML file. visible is missing it. Is it possible to set view visibility using data binding? Thanks.

<data>
    <variable
        name="sale"
        type="java.lang.Boolean"/>
</data>

<FrameLayout android:visibility="@{sale ? visible : gone}"/>

Answer

David Artmann picture David Artmann · Jun 7, 2017

As stated in the Android Developer Guide, you need to do it like this:

<data>
    <import type="android.view.View"/>
    <variable
        name="sale"
        type="java.lang.Boolean"/>
</data>

<FrameLayout android:visibility="@{sale ? View.GONE : View.VISIBLE}"/>

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