Radio Button and Picker only return the picked value, we also need complementary information, like index.

[mdelgadov]

Usually, the picker and radio buttons in other platforms associate an index to the picked element, so, the user does not need to rely on a string to make the link:
index = key, id, etc.
name = string

in many cases, this does not mean a major problem, but if I use a string I may find convoluted, error prone situations.

So, let's return an object, with complementary information, like a key, an index or anything defined in the template.