ajout du debut de la gestion d'erreur de connection bout en bout, il
faudra rajouter les differents evenements.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="customtheme" parent="android:Theme">
</style>
<style name="customtheme.login">
<item name="android:windowBackground">@drawable/background</item>
<item name="android:windowNoTitle">true</item>
</style>
</resources>