###Download
###Features
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支持多点触控或双击放大、缩小，放大可超过视图边界。
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流畅的滚动。
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可以与于可滚动的视图组件（例如ViewPager）嵌套使用。
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支持Matrix改变事件监听。例如你需要修改UI元素依赖当前的缩放/滚动状态。
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支持单击、双击事件监听。
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Out of the box zooming, using multi-touch and double-tap.
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Scrolling, with smooth scrolling fling.
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Works perfectly when using used in a scrolling parent (such as ViewPager).
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Allows the application to be notified when the displayed Matrix has changed. Useful for when you need to update your UI based on the current zoom/scroll position.
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Allows the application to be notified when the user taps on the Photo.
一个简单的Matrix变换效果展示Demo