enable touch feedback on notification title.

<?xml version="1.0" encoding="utf-8"?>

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<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"  android:drawable="@*android:drawable/list_selector_pressed_holo_dark" />

    <item                               android:drawable="@*android:drawable/list_selector_disabled_holo_dark" />

</selector>

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui"

    android:id="@+id/title_area"

    android:background="@color/notification_panel_solid_background"

    android:background="@drawable/system_bar_notification_header_bg"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:clickable="true"