added in API Level 9
Specifies whether to filter touches when the view's window is obscured by another visible window. When set to true, the view will not receive touches whenever a toast, dialog or other window appears above the view's window.
android:filterTouchesWhenObscured = "true"
android:filterTouchesWhenObscured = "false"
Resources:
developer.android.com/reference/android/view/View.html#attr_android:filterTouchesWhenObscured
http://developer.android.com/reference/android/R.attr.html#filterTouchesWhenObscured
http://alvinalexander.com/java/jwarehouse/android-examples/samples/android-9/ApiDemos/src/com/example/android/apis/view/SecureView.java.shtml
