Drag class Null safety
Interface for objects that receive updates about drags.
This interface is used in various ways. For example, MultiDragGestureRecognizer uses it to update its clients when it recognizes a gesture. Similarly, the scrolling infrastructure in the widgets library uses it to notify the DragScrollActivity when the user drags the scrollable.
) → void
- The input from the pointer is no longer directed towards this receiver. [...]
DragEndDetails details) → void
- The pointer is no longer in contact with the screen. [...]
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → String
A string representation of this object. [...]
DragUpdateDetails details) → void
- The pointer has moved.