摘要： 7.真机模拟内存警告： [[UIApplication sharedApplication] _performMemoryWarning];8.如果没法连接模拟器或真机了:删除DerivedData目录，并且清空回收站,也许还要重启xcode4.1.运行即崩溃，log下面提示：Couldn't register com.myApp.debug with the bootstrap server. Error: unknown error code. This generally means that another instance of this process was alread 阅读全文