Alertdialog in Material Design

Question

i just follow this http://www.laurivan.com/make-dialogs-obey-your-material-theme/ to style my alertdialog in material design style. However, i found out that i still can't style the same as this site, the following is my code and screenshot:

values-v14/styles.xml:

<!--
    Base application theme for API 14+. This theme completely replaces
    AppBaseTheme from BOTH res/values/styles.xml and
    res/values-v11/styles.xml on API 14+ devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
    <!-- API 14 theme customizations can go here. -->
</style>

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowActionBarOverlay">true</item>  
    <!-- colorPrimary is used for the default action bar background -->
    <item name="colorPrimary">@color/colorPrimary</item>

    <!-- colorPrimaryDark is used for the status bar -->
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>

    <item name="android:dialogTheme">@style/MyDialogTheme</item>
    <item name="android:alertDialogTheme">@style/MyDialogTheme</item>
</style>

<style name="MyDialogTheme" parent="Theme.AppCompat.Light.Dialog.Alert">
    <item name="android:windowBackground">@color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowIsFloating">true</item>
    <item name="android:windowCloseOnTouchOutside">false</item>
</style>

values/color.xml

<resources>
    <color name="colorPrimaryDark">#3367d6</color>
    <color name="colorPrimary">#4285f4</color>
    <color name="windowBackgroundColor">#eeeeee</color>
    <color name = "transparent">#0000</color>
</resources>

screenshot:

I want the divider removed and btn is in padding right style, thanks!

Solution

With the new AppCompat v22.1 you can use the new android.support.v7.app.AlertDialog.

Just use a code like this:

import android.support.v7.app.AlertDialog

AlertDialog.Builder builder =
       new AlertDialog.Builder(this, R.style.AppCompatAlertDialogStyle);
            builder.setTitle("Dialog");
            builder.setMessage("Lorem ipsum dolor ....");
            builder.setPositiveButton("OK", null);
            builder.setNegativeButton("Cancel", null);
            builder.show();

And use a style like this:

<style name="AppCompatAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
        <item name="colorAccent">#FFCC00</item>
        <item name="android:textColorPrimary">#FFFFFF</item>
        <item name="android:background">#5fa3d0</item>
    </style>

You can use a single style file for all devices.