CALayer参考文献

 

CALayer1-简介：

http://www.cnblogs.com/mjios/archive/2013/04/13/3019335.html#label0

CALayer2-创建新的层

http://www.cnblogs.com/mjios/archive/2013/04/14/3019728.html#label0

CALayer3-层的属性

http://www.cnblogs.com/mjios/archive/2013/04/14/3019728.html#label0

CALayer4-自定义层

http://www.cnblogs.com/mjios/archive/2013/04/14/3020975.html#label0