做安卓图像处理相关开发的时候，实现的在图片上画线的功能，类似matlab上的plot（）函数，还有hold on。 做安卓图像处理的同学一定会喜欢的。-When do Android image processing development, draw lines on the picture to achieve functionality similar to matlab plot() function, as well as hold on. someone do Android i