看看这个：http://code.google.com/p/android-捏/
那里没有太多活动，但您可以看一下代码。
这个问题也应该对您有帮助： Android 中是否有内置 API 用于处理捏合缩放功能
Take a look at this one: http://code.google.com/p/android-pinch/
Not a lot of activity there, but you can take a look a the code.
this question should help you also: Is there a built in API for handling pinch-zoom functionality in Android
Android 开发者博客文章 http://android-developers .blogspot.com/2010/06/making-sense-of-multitouch.html 解释了多点触控事件的一般处理，并给出了ScaleGestureDetector，Android 框架的一个组件，用于检测捏缩放手势并回调您的代码来处理它。
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.
我想你应该看看 Github 上的这个库 https://github.com/sephiroth74/ImageViewZoom
I guess you should have a look at this Library on Github https://github.com/sephiroth74/ImageViewZoom
这是帮助吗？它可能比你想象的更简单：实现捏合缩放手势
Is this help? It may be a little more simple than you thought:Implementing the Pinch Zoom Gesture
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看看这个：http://code.google.com/p/android-捏/
那里没有太多活动，但您可以看一下代码。
这个问题也应该对您有帮助： Android 中是否有内置 API 用于处理捏合缩放功能
Take a look at this one: http://code.google.com/p/android-pinch/
Not a lot of activity there, but you can take a look a the code.
this question should help you also: Is there a built in API for handling pinch-zoom functionality in Android
Android 开发者博客文章 http://android-developers .blogspot.com/2010/06/making-sense-of-multitouch.html 解释了多点触控事件的一般处理，并给出了ScaleGestureDetector，Android 框架的一个组件，用于检测捏缩放手势并回调您的代码来处理它。
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.
我想你应该看看 Github 上的这个库 https://github.com/sephiroth74/ImageViewZoom
I guess you should have a look at this Library on Github https://github.com/sephiroth74/ImageViewZoom
这是帮助吗？它可能比你想象的更简单：
实现捏合缩放手势
Is this help? It may be a little more simple than you thought:
Implementing the Pinch Zoom Gesture