日历选择器源码是一个自定义日历，默认直接显示当月日历，可以显示星期几，左右滑动可以切换月份不能选择年份，可以点击日历控件分类查看，本项目编码UTF-8默认编译版本4.4.2有中文注释。  -Calendar picker source is a custom calendar month show direct default calendar can display the week, month year or so slide switch can not be selected, you can click the Calendar control classification view, the project UTF-8 encoding default compiler version 4.4.2 have Chinese comments.