Introduction - If you have any usage issues, please Google them yourself
A recent android projects, customer requirements when viewing photos uploaded images, the images can be multi-touch drag, zoom and other operations. The Internet is not a good example of how to achieve the effect of poor.
Here to talk about my plan:
Step one: Customize a View, The View inherited from ImageView. Multi-touch dragging in the View, zoom and other functions.
Step Two: Use ImageView like that, the introduction of the View in XML. Of course, you can dynamically create the View and then added to the container component.