title: How can I change the text with a button click?
body: <p>When I click a button, I want the the string @string/dummy_content in fullscreen_content to change. How can I do that?</p>
  <p>xml:</p>
  <pre><code>&lt;TextView android:id=&quot;@+id/fullscreen_content&quot;
          android:layout_width=&quot;match_parent&quot;
          android:layout_height=&quot;match_parent&quot;
          android:keepScreenOn=&quot;true&quot;
          android:textColor=&quot;#2f4b66&quot;
          android:textStyle=&quot;bold&quot;
          android:textSize=&quot;50sp&quot;
          android:gravity=&quot;center&quot;
          android:text=&quot;@string/dummy_content&quot;&gt;
  </code></pre>
  <p>button xml:</p>
  <pre><code>      &lt;Button android:id=&quot;@+id/dummy_button&quot;
                  style=&quot;?metaButtonBarButtonStyle&quot;
                  android:layout_width=&quot;0dp&quot;
                  android:layout_height=&quot;wrap_content&quot;
                  android:layout_weight=&quot;1&quot;
                  android:text=&quot;@string/dummy_button&quot;
                  android:clickable=&quot;true&quot;
                  android:onClick=&quot;printStarter&quot;
                  /&gt;
  </code></pre>
  <p>The Java function I would like to activate:</p>
  <pre><code>public void printStarter(View view) {
  
  }
  </code></pre>