MakedEditText is a simple Android EditText with customizable input mask support.
For instance, you need user specified his phone in format +7(XXX)XXX-XX-XX. You also know user should have the only possibility to write digits but minuses, brackets and "+7" should appear automatically.
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.
This Repository simplifies working process with RecyclerView Adapter, generates ViewHolders automatically, makes it easy to create heterogeneous list and to set OnClickListeners to itemViews or it's childViews.