这个很厉害的自己绘制图片边框 http://blog.youkuaiyun.com/lmj623565791/article/details/41967509 圆形的图像边框 https://github.com/hdodenhof/CircleImageView 圆角图片控件 https://github.com/vinc3m1/RoundedImageView 剪切图片 https://github.com/jdamcd/android-crop