摘要:
官方解释:https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtDynamicResolution.html#//apple_ref/doc/uid/TP40008048-CH102-SW2对官方解释的中文诠释:http://blog.csdn.net/garrettman/article/details/9930371比较原创系统的描述:http://blog.csdn.net/wzzvictory/article/details/8629036 阅读全文