###序言：最近一段时间由于要忙学校毕业的事情和公司项目的事情，很久没有更新博客了，这两天项目中有个需要用到圆形进度条的地方，想着这段时间正在学习自定义View以及属性动画的知识，然后刚好用这个来练练手，无图无真相，直接看图：
简单自定义了一个比较通用的圆形进度条，像上图所示的可以定义圆的半径，进度颜色，宽度，中间字体等信息。下面我就一步一步来为大家讲解：
>####1、首先我们先要找出有哪些属性需要自定义的，进度条颜色、进度颜色、整个进度条的半径、进度的宽度、进度条内文字颜色及大小、最大进度、当前进度，后来我加了一个方向的属性，方向表示进度从哪里开始（默认有四个方向，上左下右），确定好之后我们就在attrs中定义出来：
资源文件列表
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