优雅地处理加载中，重试，无数据
https://github.com/KingJA/LoadSir
运行时权限获取
https://github.com/yizeliang/PermissonHelper
头像获取
https://github.com/yizeliang/ImageSelector
https://github.com/LuckSiege/PictureSelector
Meterial样式控件
https://github.com/rey5137/material
各种样式对话框
https://github.com/H07000223/FlycoDialog_Master
https://github.com/pedant/sweet-alert-dialog
https://github.com/afollestad/material-dialogs#dismissing-dialogs
https://github.com/drakeet/MaterialDialog
所有按钮的点击效果
https://github.com/traex/RippleEffect
https://github.com/balysv/material-ripple
仿微博左右切换的时候顶部发生变化，首页tab
https://github.com/jpardogo/PagerSlidingTabStrip
https://github.com/Devlight/NavigationTabBar
日期选择
https://github.com/borax12/MaterialDateRangePicker
https://github.com/prolificinteractive/material-calendarview
新手指导
https://github.com/KeepSafe/TapTargetView
https://github.com/TakuSemba/Spotlight
背景阴影
https://github.com/harjot-oberai/MaterialShadows
可展开和隐藏布局
https://github.com/fenjuly/ToggleExpandLayout
侧滑列表
https://github.com/mxn21/FlowingDrawer
提交中、登陆中按钮
https://github.com/dmytrodanylyk/circular-progress-button
https://github.com/dmytrodanylyk/android-process-button
控件加说明
https://github.com/linger1216/labelview
recyclerview滑动头部吸附
https://github.com/timehop/sticky-headers-recyclerview
字体样式：闪烁，波动
https://github.com/RomainPiel/Shimmer-android
https://github.com/facebook/shimmer-android
https://github.com/Rogero0o/MatchView
图文混排
https://github.com/quiqueqs/BabushkaText
固定位数输入框
https://github.com/glomadrian/material-code-input
不同形状ImageView
https://github.com/siyamed/android-shape-imageview
Gif图Imageview
https://github.com/felipecsl/GifImageView