This Gist has been discontinued and will be updated on a GitHub project here. The files I have removed from this Gist can be found there. Please feel free to open issues, pull requests, etc, so that I can change and improve the library how you like.
If you are already using the Gist, delete the layout XML, values XML, and Java files (the ones I have removed from this Gist), and instead add the following in your app module's build.gradle
dependencies:
compile 'com.satsuware.lib:usefulviews:+'
Make sure to change your imports as well in the files that you are using the LabelledSpinner
component.
This is a different solution to the same problem:
https://gist.github.com/smithaaron/d2acd57937d7a4201a79
With this you get also the error text (it extends AppCompatEditText)