Android “tools” namespace in layout xml documentation

Question

Per the question here,

What's "tools:context" in Android layout files?

The \'tools\' namespace reference (xmlns:tools=\"http://schemas.android.

Answer 1

You will find tool attribute when you set object in graphical layout.

Listview (in graphical mode) -> right Click -> Preview List Content -> Choose Layout...

produces:

tools:listitem="@layout/customer_list_item"