android.com/reference/android/app/Activity.html?is-external=true" title="class or interface in android.app">Activity</A>&gt;&nbsp;cls,
                             int&nbsp;icon)</PRE>
<DL>
<DD>Call this function when the user should be subscribed to a new push channel. When push
 notifications are sent out on this channel subsequently, this device will display a "toast"
 notification in the system tray. This function returns immediately, even when there is no
 internet access. In that case the subscription