要显示系统默认的后退按钮(非自定义)的语句如下:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
self.navigationItem.leftBarButtonItem = self.navigationItem.backBarButtonItem;
要显示系统默认的后退按钮(非自定义)的语句如下:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
self.navigationItem.leftBarButtonItem = self.navigationItem.backBarButtonItem;
转载于:https://www.cnblogs.com/ilovewindy/p/4059434.html