MDC‘s text fields are designed to be styled by controllers implementing the MDCTextInputController protocol. The following controllers are included in the text field component and each one is highly customizable to express your app’s branding and styling.
Some of the classes are marked as “Preferred”. These are known, through extensive UX research, to have big performance gains in usability.
There‘s also a class called MDCTextInputControllerBase. It’s meant to be used as a superclass for controllers that want default floating placeholder behavior with minimal customization. Several other controllers inherit from it.
Two of the classes include “Legacy” in their names. They are included to support older designs and avoid breaking changes that come from the size of newer styles.
This class is intended for singleline text fields only. For a visually compatible multiline controller, use MDCTextInputControllerOutlinedTextArea.
This class is intended for multiline text fields only. For a visually compatible singleline controller, use MDCTextInputControllerOutlined.
This class has different layout behavior and sizing than MDCTextInputControllerDefault but is included for backward compatibility.
This class has different layout behavior and sizing than MDCTextInputControllerFullWidth but is included for backward compatibility.