object-c语法经典 只要看这一篇就够了,比个人写的既条理又清楚。 https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&ved=0ahUKEwj48q--qrzVAhUB1GMKHYTdBkkQFgh0MAk&url=https%3A%2F%2Fwww.ibm.com%2Fdeveloperworks%2Fcommunity%2Ffiles%2Fform%2Fanonymous%2Fapi%2Flibrary%2F418fc6d0-8ba6-4c49-b745-410205b7826f%2Fdocument%2F79f2b881-273f-4118-b7f8-d21e2435ceb9%2Fmedia%2FLearning_Objective-C_A_Primer_%25E4%25B8%25AD%25E6%2596%2587%25E7%2589%2588.pdf&usg=AFQjCNHphRAwQPz1vhyYX6j_tQphMGchlg ios 视频推荐 找半天不容易 https://chuanke.baidu.com/search/it/ios?statistics_channel_id=2382&statistics_uid=68