title: Android DatePicker style messed up
body: <p>i'm developping an android app and at some point i needed to use a DatePicker. I'm using the bit of code from <a href="http://developer.android.com/guide/topics/ui/controls/pickers.html#DatePicker" rel="nofollow noreferrer">here</a>. But the DatePickerFragment that pops up has his style all messed up like this :</p>
  
  <p><img src="https://i.stack.imgur.com/hftDQ.png" alt="Screenshot"></p>
  
  <p>This is the layout of the activity :</p>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
  android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  android:paddingBottom="@dimen/activity_vertical_margin"
  tools:context="narthe.compteur_km.ExportActivity"
  android:background="#ff1a2530"
  android:gravity="center"
  android:orientation="vertical"&gt;
  
  
  &lt;TextView android:id="@+id/showMyDate"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"/&gt;
  &lt;Button
      android:id="@+id/myDatePickerButton"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="@string/pick_date"
      android:onClick="showDatePickerDialog" /&gt;
  
  &lt;Button
      style="@style/customEditButton"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="@string/exporter"
      android:id="@+id/exportButton"
      android:layout_marginTop="20dp"
      android:textStyle="bold"
      android:textSize="25sp" /&gt;
  
   &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>So what am i doing wrong ? Is there some style of mine overriding the native style ? (Tried to remove the "style="@style/customEditButton" line in second button but same result)</p>