January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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6.3.4. Overriding View Method onTouchEvent
Users interact with this app by touching the device’s screen. A touch aligns the cannon to face the touch point on the screen, then fires the cannon. To process simple touch events for the CannonView, you’ll override View method onTouchEvent (Section 6.8.13), then use constants from class MotionEvent (package android.view) to test which type of event occurred and process it accordingly.
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