alertDialog设立主题theme的方法

AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.AlertDialogCustom));

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
    <style name="AlertDialogCustom" parent="@android:style/AlertDialog"> 
        <item name="android:textColor">#00FF00</item> 
        <item name="android:typeface">monospace</item> 
        <item name="android:textSize">10sp</item> 
    </style> 
</resources>