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Android MaterialDesign-style albums, gallery
https://github.com/yanzhenjie/Album Album是一个MD风格的开源相册，主要功能分为两部分：相册选图、画廊预览。
主页
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卡片式的 菜单 视图
https://github.com/Janseon/CardMenuView 卡片式的 菜单 视图菜单初始状态，卡片菜单从底部依次动画弹出：每个卡片可以通过手势触摸，上下移动打开和恢复原来状态：
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A json-api-mock framework for Android
https://github.com/shanbay/mock-api 基于 OkHttp 的 Interceptor ：如果目标url需要mock，则从本地（assets或sdcard）读取数据，否则继续向外发送请求。
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Android loading animations
https://github.com/ybq/Android-SpinKit Android loading animations(I wrote a android edition according SpinKit)
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一个优质的 Android 开源图片查看 App-LeafPic
LeafPicLeafPic is a fluid, material-designed alternative gallery, it also is ad-free and open source under GPLv3 license. It doesn’t miss any of the main features of a stock gallery, we also have i