title: Change Activity's theme programmatically
body: <p>In particular cases I need to remove dialog theme from my activity but it doesn't seem to be working. Here's an example</p>
  
  <p>First activity:</p>
  
  <pre><code>public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      startActivity(new Intent(MainActivity.this, SecondActivity.class));
  }
  </code></pre>
  
  <p>Second activity:</p>
  
  <pre><code>public void onCreate(Bundle savedInstanceState) {
      // TODO Auto-generated method stub
      super.onCreate(savedInstanceState);
      setTheme(android.R.style.Theme);
      setContentView(R.layout.activity_second);
  }
  </code></pre>
  
  <p>Manifest excerpt:</p>
  
  <pre><code> &lt;activity android:name="SecondActivity" android:theme="@android:style/Theme.Dialog"&gt;&lt;/activity&gt;
  </code></pre>
  
  <p>When I run it's still dialog themed.</p>
  
  <p>API10</p>
  
  <p>Thanks.</p>