title: TextView setGravity() doesn't work in java
body: <p>I'm stuck on a problem and I don't know, what causes it.
  I have a very simple Layout like this:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:orientation="vertical"&gt;
  &lt;TextView
      android:id="@+id/my_text_view"
      android:layout_width="wrap_content"
      android:layout_height="fill_parent"
      android:layout_gravity="NOTE_THIS"
      android:textColor="#FFFFFF"
      android:textSize="22dp"
      android:text="TestText"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>which is included inside another layout. If I change the gravity inside the xml I see same Result in Layout-Editor and on my phone. If I wanna apply the Gravity programatically like with <code>myTextView.setGravity(Gravity.CENTER)</code> it doesn't Change anything. And I cannot set LayoutGravity in Java on a TextView</p>
  
  <p>I'll tried for debug purposes to include them three times each with another gravity which does work even. So I assume everything is alright with my Layout and there has to be a Bug or something else I miss. 
  Can someone give me a hint what I also can try, or what causes this problem?</p>