I want to concat two strings for a TextView in android, Data Binding Api
<p>Im using <code>DataBinding</code> Api for setting the views in android layouts. Here is my layout.</p>

<p>layout.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
 &lt;layout xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  &lt;data&gt;
    &lt;variable name="user" type="testing.sampleapp.com.sampleapp.User"/&gt;
  &lt;/data&gt;
&lt;LinearLayout
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"&gt;
    &lt;TextView android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@{ "Hello " + user.firstName}"/&gt;
&lt;/LinearLayout&gt;
</code></pre>

<p></p>

<p>I want the TextView to display <strong>Hello UserName</strong>. How to achieve this using the data binding api.</p>