摘要：
在CAShapeLayer类下用贝塞尔函数绘制自定义形状进度条，然后通过strokeStart与strokeEnd属性控制path的起止点。 阅读全文
摘要：
About GitBookGitBook was created in the middle of 2014 with the vision of creating a modern and simple solution to digital writing and publishing.We a... 阅读全文