Is there a 3rd party library for Android Pinch Zoom

Question

Does anybody know whether there's a 3rd paty (or built in) library that helps in detecting and handling a pinch zoom event?

Basically what I'm looking for is some class that takes coordinates from a touch event and returns whether its a pinch zoom event or not...

Not a 3rd party lib but... have you looked at [this article](http://www.zdnet.com/blog/burnette/how-to-use-multi-touch-in-android-2-part-6-implementing-the-pinch-zoom-gesture/1847)? — uTubeFan, Apr 28 '11 at 21:16

score 4 · Answer 1 · edited May 23 '17 at 11:59

4

Not a lot of activity there, but you can take a look a the code.

edited May 23 '17 at 11:59

Community

answered Apr 28 '11 at 21:21

Aleadam

score 1 · Answer 2 · answered Jun 26 '13 at 14:22

1

I guess you should have a look at this Library on Github https://github.com/sephiroth74/ImageViewZoom

answered Jun 26 '13 at 14:22

the100rabh

score 1 · Answer 3 · answered Apr 28 '11 at 22:37

1

The Android Developers Blog post at http://android-developers.blogspot.com/2010/06/making-sense-of-multitouch.html explains general handling of multitouch events and also gives examples of ScaleGestureDetector, a component of the Android framework that detects pinch zoom gestures and calls back into your code to process it.

answered Apr 28 '11 at 22:37

adamp

This looks great. I am gonna try that tonight. The only drawback is it is only supported by API Level 8+ which is a very limited market. – budsiya May 02 '11 at 21:09
Not as limited as you might think: http://d.android.com/resources/dashboard/platform-versions.html But if compatibility with older devices is critical, ScaleGestureDetector itself is open source like the rest of the core platform. You can get it from AOSP here: http://goo.gl/sOhqt change the package name, and bundle it in your app. – adamp May 02 '11 at 21:47
Thanks a lot... I will try that and let you know the results. – budsiya May 03 '11 at 15:26

score 0 · Answer 4 · answered Oct 22 '12 at 03:27

0

Is this help? It may be a little more simple than you thought: Implementing the Pinch Zoom Gesture

answered Oct 22 '12 at 03:27

Shinigamae

4 Answers4