Looks for TextViews being used for input

Using a <TextView> to input text is generally an error, you should be using <EditText> instead. EditText is a subclass of TextView, and some of the editing support is provided by TextView, so it's possible to set some input-related properties on a TextView. However, using a TextView along with input attributes is usually a cut & paste error. To input text you should be using <EditText>.
This check also checks subclasses of TextView, such as Button and CheckBox, since these have the same issue: they should not be used with editable attributes.