11
Applying Interactivity

WHAT YOU WILL LEARN IN THIS CHAPTER

• How to use GestureDetector, which recognizes gestures such as tap, double tap, long press, pan, vertical drag, horizontal drag, and scale.
• How to use the Draggable widget that is dragged to a DragTarget.
• How to use the DragTarget widget that receives data from a Draggable.
• How to use the InkWell and InkResponse widgets. You will learn that InkWell is a rectangular area that responds to touch and clips splashes within its area. You'll learn that InkResponse responds to touch and that splashes expand outside its area.
• How to use the Dismissible widget that is dismissed by dragging.

In this chapter, you'll learn how to add interactivity to an app by using gestures. In a mobile application, gestures are the heart of listening to user interaction. Making use of gestures can define an app with a great UX. Overusing gestures when they don't add value or convey an action creates a poor UX. You'll take a closer...