October 2018
Intermediate to advanced
464 pages
15h 17m
English
Content preview from Android 9 Development Cookbook - Third Edition
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Pinch-to-zoom with multi-touch gestures
The previous recipe used SimpleOnGestureListener to provide detection of simple, one-finger gestures. In this recipe, we'll use the SimpleOnScaleGestureListener class to detect the common multi-touch gesture "pinch to zoom".
Here are two screenshots from the application we'll create in this recipe. The first shows the icon zoomed out:
This second screenshot shows the icon zoomed in:
