Android Resource IDs

Question

I\'m retrieving custom Resource IDs from a custom xml view type. I\'m asked to specify a default int value for the retrieval and was wondering what is the range of IDs? Are they

Answer 1

According to https://developer.android.com/reference/android/content/res/Resources#ID_NULL, 0 is the same as setting @null in XML, meaning you can use it i.e. when you want to clear the resource.

It is an invalid resource ID.