July 2015
Beginner to intermediate
600 pages
18h 59m
English
book
Android Programming: The Big Nerd Ranch Guide, 2nd Edition
by Bill Phillips, Chris Stewart, Brian Hardy, Kristin Marsicano
Content preview from Android Programming: The Big Nerd Ranch Guide, 2nd Edition
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29 Custom Views and Touch Events
In this chapter, you will learn how to handle touch events by writing a custom subclass of View named BoxDrawingView. The BoxDrawingView class will be the star of a new project named DragAndDraw and will draw boxes in response to the user touching the screen and dragging. The finished product will look like Figure 29.1.
Figure 29.1 Boxes drawn in many shapes and sizes
Setting Up the DragAndDraw Project
Create a new project named “DragAndDraw”. Select API 16 as the minimum SDK and create an empty activity. Name the activity DragAndDrawActivity.
Setting up DragAndDrawActivity ...
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