What is Input Control?
Input controls are interactive elements of the interface which allow users to enter information into the system's interface. Examples - checkboxes, dropdown lists, list boxes, radio buttons, buttons, toggles, text fields, and date fields.
Input controls are interactive components of an app's user interface. Android provides a wide variety of controls you can use in your UI, such as buttons, text fields, seek bars, checkboxes, zoom buttons, toggle buttons, and more.
Adding input controls to your UI is as easy as adding XML elements to your XML layout. Each input control supports a specific set of input events so that you can handle events such as when the user enters text or touches a button.