18.3 Configuring Widget Dimensions
Controlling the dimensions of a widget is a key element of the user interface design process. The ConstraintLayout provides three options which can be set on individual widgets to manage sizing behavior. These settings are configured individually for height and width dimensions:
•Fixed – The widget is fixed to specified dimensions.
•Match Constraint –Allows the widget to be resized by the layout engine to satisfy the prevailing constraints. Also referred to as the AnySize or MATCH_CONSTRAINT option.
•Wrap Content – The size of the widget is dictated by the content it contains (i.e. text or graphics).