January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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6.8.13. Overriding View Method onTouchEvent
In this example, we override View method onTouchEvent (Fig. 6.19) to determine when the user touches the screen. The MotionEvent parameter contains information about the event that occurred. Line 523 uses the MotionEvent’s getAction method to determine which type of touch event occurred. Then, lines 526–527 determine whether the user touched the screen (MotionEvent.ACTION_DOWN) or dragged a finger across the screen (MotionEvent.ACTION_MOVE). In either case, line 529 calls the cannonView’s fireCannonball method to aim and fire the cannon toward that touch point. Line 532 then returns true to indicate that the touch event was handled.
518 // called when the user touches ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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