捏放大图像视图的最佳方法

Question

What is the best way to pinch-to-zoom an imageview in Android, because i've been searching this for a long long time. Is there some tutorial, or example ? I just want some tips to guide me in the right direction.

Answer 1

您可以使用scalegesturedetector参见此处http://android-developers.blogspot.com/2010/06/making-sense-of-multitouch.html

Answer 2

If you want more fine grained control you can subclass ImageView handle the touch events and directly manipulate the matrix of the canvas backing it during your onDraw calls.

It's a lot more complex but for my project it turned out to be the best solution.