title: Clearing Focus does not work
body: <p>Today i found some posts about how to celar the focus of an EditText.
  It was recommed to do this:</p>
  
  <p>Set focusable and focuableInTouchMode to true for the parent layout:</p>
  
  <pre><code>&lt;LinearLayout
      android:id="@+id/my_layout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:background="#000000"
      android:orientation="vertical"
      android:focusable="true"
      android:focusableInTouchMode="true" &gt;
  
      &lt;EditText
          android:id="@+id/calc_input"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:inputType="numberDecimal" /&gt;
  </code></pre>
  
  <p>And to use this in the DialogFragment:</p>
  
  <pre><code>    @Override
      public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
          super.onViewCreated(view, savedInstanceState);
  
          this.textEditCalcInput = (EditText) view.findViewById(R.id.calc_input);
          this.textEditCalcInput.clearFocus();
  
          view.findViewById(R.id.my_layout).requestFocus();
      }
  </code></pre>
  
  <p>But unfortunately this does not work. The textfield always has the focus when the ui appears.</p>
  
  <p>So how to remove the focus?</p>
  
  <p><img src="https://i.stack.imgur.com/9bLwO.jpg" alt="Portrait with Keyboard up and AlertDialog up"></p>
  
  <p><img src="https://i.stack.imgur.com/AQnlH.jpg" alt="Landscape with Keyboard up and AlertDialog (in Background)"></p>
  
  <p>Here i want the AlertDialog to be shown and the Keyboard to be hidden.</p>