CountryCurrencyPicker is an android picker library for country and / or currency. You can implement it as fragment or dialog. It offers the option to search for country values and / or currency values.
GooglePlacesAutoComplete is a small Kotlin demo for auto search in google map.
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Forms, data validation... They can be annoying sometimes. This library is here to try to help you out. AndroidForms aims to be a simple, Generic form library for android. At it's core, there aren't even any dependencies! You could easily move Source, Drain, and Form into any project you'd like.