dragimageview
There are 2 repositories under dragimageview topic.
mikaelzero/mojito
微信、bilibili大图、长图、gif、视频、自定义view的转场效果，The transition effect of wechat, bilibili large image, long image, GIF, video and custom view
zywudev/PhotoViewEx
Android 图片预览，支持缩放、手势旋转、拖动退出预览。